You're Technically HOTTER Than The Sun (with XKCD!)

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Жыл бұрын

Where to buy WHAT IF? 2 by Randall Munroe - Amazon: bit.ly/3Rk5Vy2
Barnes and Noble: bit.ly/3AKwXIl
Penguin Random House: bit.ly/3HgfucP
Books-A-Million: bit.ly/3Q4bEH3
Bookshop: bit.ly/3q26vVk
IndieBound: bit.ly/3TyhX8W
Apple Books: bit.ly/3wNNBp9
FOR INTERNATIONAL EDITIONS, Including the UK and Germany, click here: xkcd.com/what-if-2/
The #1 New York Times bestselling author of What If? and How To answers more of the weirdest questions you never thought to ask
The millions of people around the world who read and loved What If? still have questions, and those questions are getting stranger. Thank goodness xkcd creator Randall Munroe is here to help. Planning to ride a fire pole from the Moon back to Earth? The hardest part is sticking the landing. Hoping to cool the atmosphere by opening everyone’s freezer door at the same time? Maybe it’s time for a brief introduction to thermodynamics. Want to know what would happen if you rode a helicopter blade, built a billion-story building, made a lava lamp out of lava, or jumped on a geyser as it erupted? Okay, if you insist.
Before you go on a cosmic road trip, feed the residents of New York City to a T. rex, or fill every church with bananas, be sure to consult this practical guide for impractical ideas. Unfazed by absurdity, Munroe consults the latest research on everything from swing-set physics to airliner catapult-design to answer his readers’ questions, clearly and concisely, with illuminating and occasionally terrifying illustrations. As he consistently demonstrates, you can learn a lot from examining how the world might work in very specific extreme circumstances.
Support MinutePhysics on Patreon! / minutephysics
Link to Patreon Supporters: www.minutephysics.com/supporters/
What if Pluto were plutonium? And Uranus uranium? And Mercury mercury? This video is based off of a chapter of the new xkcd book "What If? 2"
MinutePhysics is on twitter - @minutephysics
And facebook - / minutephysics
Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute!
Created by Henry Reich

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@TurkMan35 Жыл бұрын

never thought i'd learn a pickupline from a physics channel "you're hotter than the sun, there's just not enough of you" lol

@TurkMan35 Жыл бұрын

@@benbaselet2026 dude no way i'm using that on a random girl :D

@ayushrawal7436 Жыл бұрын

@@TurkMan35 you can use that as an ice breaker in a group of people

@S.h-comma.to.the.top-Dynasty Жыл бұрын

And don’t forget the line that quickly followed “but we were talking about Uranus”

@Thunderpulse Жыл бұрын

Continues with “we were talking about (your anus) which is big”

@6884 Жыл бұрын

be careful to avoid girls with body/eating disorders (not body-eating disorders)

@InverseOfficial Жыл бұрын

"We were talking about Uranus, which there is a lot of" well that sounds lovely

@gilsonfeydyt6978 Жыл бұрын

"Uranus' shockwave would reach and destroy us"

@travcollier Жыл бұрын

Now part of my brain is frantically trying to make that into a verse to Baby Got Back... Stupid brain

@Hector.Pulido Жыл бұрын

Thanks i was looking for this comment

@Mithorium Жыл бұрын

Thanks, I grew it myself

@mattia_carciola Жыл бұрын

Being hotter than the sun that's good news

@tomdiderot4344 Жыл бұрын

He definitely knew what he was doing when he wrote, “We were talking about Uranus, which there is a lot of and would get really, really hot…”.

@mal2ksc Жыл бұрын

Almost all "yo mama" jokes can be recycled as "Uranus" jokes.

@panda4247 Жыл бұрын

There is a song Uranus by Nanowar Of Steel. Check it out

@cybercritterowo Жыл бұрын

They even put "Uranus (Big)" they definitely knew

@zes7215 3 ай бұрын

wrr

@TheOtherSteel Жыл бұрын

If Mercury were suddenly made of mercury, wouldn't it immediately begin to boil? Being frozen solid on the dark side, vapor on the sunny side, and liquid in between, I would think that would cause enormous stress.

@fakestory1753 Жыл бұрын

And those mercury vapor will eventually reach earth

@KuK137 Жыл бұрын

There is actually pretty big band between molten and boiling points of Mercury so as long as we can get some convection going on, no part of it would be frozen. Though, surface of Mercury gets above boiling point temperature so you'd see Mercury clouds soon (which would probably shield the surface somewhat). Though, Mercury is pretty shiny, maybe it would deflect enough radiation to lower surface temperature? Also, the element is 3x denser than the planet, which would mean planet shrinking by a lot if we keep mass in transition...

@oliviapg Жыл бұрын

It wouldn’t reach earth, it would just stay in its orbit

@fakestory1753 Жыл бұрын

@@oliviapg but solar wind..

@MarsJenkar Жыл бұрын

@@fakestory1753 I'm no physicist, but I don't think solar wind would exert enough force on mercury vapor to have much of an effect. Even if it did have an effect, it would take a _long_ time to cross the 50-plus million mile gulf to Earth's orbit.

@chresse214 Жыл бұрын

The first "what if" book is definitely upon the most hilarious things i've read in my life. Can absolutely reccomend it. It's worth every penny.

@ayzmmo Жыл бұрын

Minute physics published a book ?

@guestblahful Жыл бұрын

@@ayzmmo The first "What If?" (and upcoming second one) was written by Randall Munroe, creator of the XKCD web comic

@Mossprite21 Жыл бұрын

@@ayzmmo xkcd wrote “what if?” (really good btw, preorder the second book)

@cyrilio Жыл бұрын

I love the audiobook! It’s definitely a good one

@ayzmmo Жыл бұрын

@@guestblahful Thx that's cool I'll have a look

@schwi5425 Жыл бұрын

Fun fact: Tellurium is named after the Latin word “tellus” meaning Earth so you can also include the Earth on that list at the beginning

@Hobby-Linguist Жыл бұрын

is'nt Latin for Earth Terra? or dose "Tellus" Spicificly mean The planet? Edit: well i guess your probebly right becourse Tellus has "us" as an ending... terra dosnt meening one is in Nominative and the Other one isnt so your probebly correct

@schwi5425 Жыл бұрын

@@Hobby-Linguist Theyre synonyms so they both mean Earth

@cuckoophendula8211 Жыл бұрын

I guess if we wanted to get extra fancy, each planet / Roman God happens to be represented by a metal in alchemy. Mercury is the obvious one, but they have Venus being copper, Mars being iron, Jupiter being tin, and Saturn being lead for some reason (while the "planets" moon is silver and the sun is gold). Note that this was before the planets Uranus, Neptune and Pluto were discovered and neither were the elements that were named after them.

@Hobby-Linguist Жыл бұрын

@@schwi5425 well Earth and Earth also meen the same but one is a Planet the other is dirt. i thought mabey Terra then Spisificly meens dirt or something

@schwi5425 Жыл бұрын

@@cuckoophendula8211 I suppose you’re right but none of those (with the exception of mercury) are actually named after the planet. Still, it would be interesting to see how a much denser Jupiter would affect the solar system

@physicsbutawesome Жыл бұрын

3:16 the author's picture... legend.

@caffiend81 Жыл бұрын

I am actually a little shocked that any of the outer planets exploding would produce enough energy to melt the Earth given the vast distances combined with the inverse square law, and the lack of a medium for a pressure wave (though I understand that the expanding gas and debris are still a thing). But, I trust Randall Munroe's ability to calculate these things so... 🤣Damn!

@WaluigiisthekingASmith Жыл бұрын

There's some fun fermi calculations you can do. 1 au is 8 light minutes. is 10^8 * 10^3 is 10^11 meters. The mass of a planet is something on the order of 10^25 kg and the density of a gas planet is about 1 g/cm^3 or 1000 kg/m^3. That means the volume is ~ 10^22 m^3 (I'm assuming the replacement is by volume and not by mass. Since neptunium etc are so dense it actually is important). The distance to the outer planets is probably about 10 au so the area of equal flux is (10^12)^2*4 pi = 10^25 m^2. I don't know the amount of energy in a fission nuke per cubic meter of input material so I'm just going to wildly guess 10^12 to 10^15 joules. Even if I did know I'm almost certain I would still be way off because of weirdness in scaling. Anyway, 10^12 * 10^22/10^25 = 10^9 joules per square meter which I bet would be enough to kill everyone on the planet . Looking up online, little boy only used ~ 63 kg of uranium so, in one nice Wolfram alpha formula, here's the actual answer www.wolframalpha.com/input?i=%28Neptune+volume+*+density+of+neptunium+*+yield+of+little+boy%2F%2863+kg+%28Neptune+average+distance%5E2*4*pi%29%29%29 Not enough to destroy the earth but certainly enough to kill everyone on it.

@KuK137 Жыл бұрын

@@WaluigiisthekingASmith Actually it wouldn't all fuse because the planet would blow up sooner dispersing the material. This is huge problem even in atomic bombs with a few kg of material (and why we need to compress it with explosives to keep the fission reaction from blowing up the core), it would be vastly worse in planet sized core. You'd have a radioactive asteroid field that would use up most energy on dispersing the planet and very little of it on radiation and shockwave...

@djinn666 Жыл бұрын

@@KuK137 I wouldn't be so sure of that. Compression increases fission rate, so in the process of being blown apart, the surface material would be compressed and undergo fission too. With an astronomical amount of material, inertia alone might be enough for fission to complete.

@mdab121 Жыл бұрын

The distance to Neptune is 30 AU.

@entcraft44 Жыл бұрын

@@WaluigiisthekingASmith The amount of fissile material used in construction does not equal the amount of fissile material that actually gets split. From the 63kg less than a kilogram actually reacted. For a planet-sized core there are (probably) factors which will increase and factors which will decrease the efficiency. I think it will be higher because of the much better inertial confinement and much higher neutron flux in all but the outermost layers of the planet. The exact things that will happen are complicated to predict. You are correct with "weirdness in scaling". But you are probably at most two orders of magnitude away from the real answer.

@harizaka Жыл бұрын

"In a sense, you are hotter than the Sun-there’s just not as much of you. But we were talking about UrAnus... "

@cosmoss007 Жыл бұрын

lol

@robertwallace5498 Жыл бұрын

All of Randall Munroe's books and comics are amazing, definitely worth a read

@samhanna2349 Жыл бұрын

what if. highly recommend this book

@snailracer5260 Жыл бұрын

‘How to’ and ‘thing explainer’ are also great

@mustang1912 Жыл бұрын

This is wrong, the blast would have far too little energy to affect the earth.

@scaper8 Жыл бұрын

@@snailracer5260 The dedication in _Thing Explainer_ makes me tear up every time. For those not in the know, he wrote the book using only the 500 (I think?) most common words in the English language. This includes the dedication, which was to "strong, pretty ring wearer." It was always so beautiful, somehow, to describe his wife in simple, childlike words. I don't know, it just gets me everytime.

@noneofyourbusiness4133 Жыл бұрын

I’m so fucking mad he doesn’t put them on the blog anymore god fuckinf damn it

@lexinwonderland5741 Жыл бұрын

Two of my favorites collaborating! I've been keeping up with XKCD for at least a decade now, it's a relic of the old internet/academic/nerd culture and it makes me so happy that Randall is still active!!

@bluey-next777 3 ай бұрын

2:27 *Insert the blue crab music meme here*

@bluey-next777 3 ай бұрын

2:40 NOT AGAIN!

@EPMTUNES Жыл бұрын

Xkcd and minute physics is a crossover my 2013 self has been waiting for for years, thank you both

@MuzikBike Жыл бұрын

wasn't there another one earlier? I think it was about rockets

@hellomynameisjoenl Жыл бұрын

@@MuzikBike There was definitely one about a lava moat.

@TlalocTemporal Жыл бұрын

@@hellomynameisjoenl -- That was for the other XKCD book series, Thing Explainer (the Up Goer Five), and How To (make a lava moat)

@authorinthedark Жыл бұрын

"how to make a lava moat" and "how to go to space" are two of their older collabs

@PunnamarajVinayakTejas Жыл бұрын

Is it because of the stick figures?

@natetwehues2428 Жыл бұрын

Most What Ifs can be summarized as "this doesn't end well."

@timothymclean Жыл бұрын

If it ended well, it wouldn't be worth talking about.

@1224chrisng Жыл бұрын

the ending one from the last version is fine, he talked about a -10 magnitude earthquake, which would be smaller than a truck driving by

@just-a-fnf-fan Жыл бұрын

@oworandom Жыл бұрын

@@1224chrisng aint a trunk magnitude much more stronger though? I remembered the -10 one is literally the feather touching the ground at this point

@musicexams5258 Жыл бұрын

@@oworandom -10 was a mote of dust landing on a table 0 was pretty funny because it's a football team charging into your house for some reason they just hate your house?

@Syuvinya Жыл бұрын

Randall Monroe's What If?, How To, and Thing Explainer are some of the best science non-fictions I've read. Will definitely give What If? 2 a read!

@LDSG_A_Team Жыл бұрын

Super excited to get the second volume! I was gifted the first one when it came out and I absolutely love every bit of it! Thanks for reminding me to buy it now that it's out :D

@svahn1 Жыл бұрын

"In a sense, you are hotter than the Sun. There's just not as much of you." Killer pickup line, thanks.

@stephen3164 Жыл бұрын

“The blast from Uranus…” - oh, my family already knows that’s deadly! 🤣

@resurgam_b7 Жыл бұрын

I would absolutely support having all... okay most, of the "What If" scenarios narrated and animated by you. That would be a splendid binge watch, the natural evolution to the binge read of XKCD's website that I do every couple years :D

@a.bergstrom7172 5 ай бұрын

I’ve loved Randall‘a books for a long time now. Nice to finally see some of them get recognized. I’d get the books they go into a lot of detail and are absolutely worth it.

@namenamename390 Жыл бұрын

Fun fact: Uranium was called uranium because at the time, the planet had several competing names and the guy who discovered the element named it this way to support the name Uranus for the planet.

@ASmolPotatoOntheInternet Жыл бұрын

Should have been named King George tbh.

@ragnkja Жыл бұрын

@@ASmolPotatoOntheInternet George’s Star.

@Volvith Жыл бұрын

@@ASmolPotatoOntheInternet Yes but there's significantly less butt jokes you can make involving King George. :)

@meirl5700 Жыл бұрын

@@ASmolPotatoOntheInternet CGP grey enjoyer detected

@burnv06 Жыл бұрын

Some men just want to watch the world burn.

@aster2790 Жыл бұрын

1:50 I am confident that this line was not accidental

@997_99 Жыл бұрын

🤣

@AaronRotenberg Жыл бұрын

I assume anyone pronouncing "Uranus" with the stress on the second syllable is trying to make a double entendre.

@zxcucruma5433 Жыл бұрын

Uranus(big)

@mayhair Жыл бұрын

How else would you word it?

@TheWorldsLargestOven Жыл бұрын

How the f*ck are you supposed to pronounce it? Uunars? Sunaru? Urineus?

@SokoBuilds Жыл бұрын

I loved reading What If when I was still in High School, I’m in university now and my curiosity is as peaked as it was back then! Just ordered the book and can’t wait to read it. :)

@kalebbeer3526 Жыл бұрын

That has gotta be the best sponsor/ promo/ whatever you call it that i have ever seen, I'm definitely getting this for myself and i think it's the second thing I've ever been compelled to buy from a youtube sponser spot

@JojoDrs_ Жыл бұрын

When I see xkcd, I always think of his "what if" chapters like the periodic table as a wall or the relativistic baseball Then I look at the title of this video and I strongly agree with one of the first sentences of this video: "This is not going to end well."

@mads_in_zero Жыл бұрын

When an XKCD "what if" opens with a "we are going to have a problem" type message, you know it'll be catastrophic.

@HyperBirbN3rd 4 ай бұрын

At the start of one What If 2 chapter it’s all like "This is actually surprisingly reasonable by What If standards" and goes on to describe how many people would get killed ("only" about 10)

@robertjarman3703 Ай бұрын

@@HyperBirbN3rd Which one was that? I have a copy of What If II but I forget which chapter.

@HyperBirbN3rd Ай бұрын

@@robertjarman3703 I forgor :( and I don’t have a copy because I got one from the library back when it was just published and practically memorized it 🤓 Maybe the lava lamp?

@6884 Жыл бұрын

I gifted a copy of What If (1) to my then-PhD-supervisor. The fact that he didn't seem to have enjoyed it much was indeed a dire warning of what came next.

@SupersuMC Жыл бұрын

Don't leave us hanging: what came next‽

@Vezail Жыл бұрын

We need to know by Monday!

@uncreative369 Жыл бұрын

What came next?

@collectorguy3919 Жыл бұрын

I'd guess he found a lot wrong with the book and that created work for the PhD candidates

@alexandreocadiz9967 Жыл бұрын

I supposed that him not liking the book was a warning that the supervisor was cruel and a terrible boss

@brendankenny8721 Жыл бұрын

Fantastic, as always

@cheesemanmaster 5 ай бұрын

Thanks man, I really needed that

@xborak2 Жыл бұрын

"Unfortunately, the night sky - and human eyes - would get a little harder to find" best comment

@aaaaaattttttt5596 Жыл бұрын

What does it mean

@thaddeusgenhelm8979 Жыл бұрын

@@aaaaaattttttt5596 It was alluding to the upcoming explosion of Neptune that would obliterate all humans (and therefore make human eyes hard to find) and the stripping away of Earth's atmosphere, etc. making the night sky as a we consider it also similarly absent (also the lack of human eyes to observe it would also add to the difficulty!)

@T4gProd Жыл бұрын

I love living in a timeline where pretty much two of my favorite science communicators collaborate.

@cube2fox Жыл бұрын

Favorite stick figure creators

@chlorine4567 Жыл бұрын

⑨

@koshmeji Жыл бұрын

Happy Chiruno Day

@EdKolis Жыл бұрын

What next? Neil deGrasse Tyson and Bill Nye? William Shatner and Mark Hamill?

@NickAndersson Жыл бұрын

I am so happy that there is a second what if part! I loves the first one alrrady!

@user-zu8xk1lq4d 17 күн бұрын

1:49 ahhhhhhhhh yes the good old Uranus joke never gets olt😂😂😂😂😂😂😂😂😂😂😂😂

@alexheyman4588 Жыл бұрын

Would the shockwave from a Plutonium-241 Pluto be powerful enough to melt the entire Earth like that? I'm just wondering because Pluto is a lot smaller than Uranus or Neptune and orbits farther away, at least on average. (Considering that the power of the shockwave would fall off with the square of the distance traveled, would its effect on Earth vary meaningfully depending on where in Pluto's eccentric orbit it happened to be when turned to Plutonium-241?)

@15Redstones Жыл бұрын

Couldn't find information for Pu-241, but for 239 Earth would be blasted with about 30 days worth of solar radiation in a few seconds.

@arcan762 Жыл бұрын

@@15Redstones what if pluto was on the other side of the sun to us at the time?

@chrisdevine4848 Жыл бұрын

I am skeptical too. Happy to stand corrected, but I want to see the maths! (But certainly cannot be bothered to do it myself!) :)

@mattdombrowski8435 Жыл бұрын

I'm not mathey enough to give a real answer, but I am mathey enough enough to give you an order of magnitude guesstimate. So, according to Google, the tsar bomba had about 1% the luminosity of the sun for a brief moment with a core mass of 64 kg. The mass of pluto is 10^22 kg. If we assume this scales linearly (which is probably an underestimate because a planetary mass would coincidentally mimic some of the ways we boost yields), it would momentarily reach roughly 10^18 % the luminosity of the sun at 1 AU from Pluto. Pluto is 30-ish AU away, which would roughly bring that down to roughly 10^16 % solar luminosity for an instant.

@flykiller Жыл бұрын

Pluto: 1.303e22 kg, 1.854 g/cm^3 Plutonium-241: 19.84 g/cm^3, Decays on average with 5.23 keV or 2.09 MJ/gram Plutonium-241 planet would be 1.394e23 kg and would explode (assuming Plutonium-241 explodes entirely with average decay energy) with 2.9e32 Joules. Pluto is on average 40 AU away from us so at that distance energy of the explosion per area would be 645 kJ/m^2. This is equivalent to being 2.8 km away from the Hiroshima nuke (in space). We are getting this energy from the sun per ~8 minutes. It doesn't seem that much but it can be because of wrong reaction energy. I could only find this value for 241 isotope.

@marc-andreservant201 Жыл бұрын

Let's see... Pluto has a radius of 1,188 km, which corresponds to a mass of 1.398*10^23 kg. This is 2.19*10^22 times the amount of plutonium in the Nagasaki bomb, which had a yield of 20 kilotonnes of TNT. Assuming the explosion would be proportionally bigger, this comes out to 4.37*10^23 kt, or a ball of TNT 73,200 times the mass of the Earth. Amazingly, this is still 8 orders of magnitude weaker than a supernova.

@pedronunes3063 Жыл бұрын

It's the old rule, imagine any absurd explosion and compare to a supernova, the supernova wins.

@patrickmccurry1563 Жыл бұрын

@@pedronunes3063 Hypernova. Black hole merger.

@chemplay866 Жыл бұрын

@@patrickmccurry1563 Cheesburger

@pepero_sadpepmijt_form6322 Жыл бұрын

@@chemplay866 😨

@HeroDarkStorn Жыл бұрын

@@patrickmccurry1563 He said "imagine", not "name". If you imagine a Hypernova, you probably won't come anywhere near a nova. My favorite approach to the scale of supernova, courtesy of What-if: "Put the strongest nuke against you eye, and replace the sun with a supernova. Which is brighter? The supernova. By 9 orders of magnitude."

@Acs2004 Жыл бұрын

Thanks mate 👍. I needed that

@JaviEstene Жыл бұрын

Thanks mate, I really needed to hear that today

@thedownwardmachine Жыл бұрын

Thank you for letting me know about this book. I’ve been waiting years for it. When the first one came out, I enjoyed it so much that I was sad when I got to the end and immediately re-read it.

@AmoghA Жыл бұрын

1:01 minutephysics suggests not hold U-238 at home. Thanks for the heads up, Henry because I had a planned a sleepover with friends where would hold U-238, but now it's scrapped.

@patrickmccurry1563 Жыл бұрын

Pitcheblende aka uraninite is a natural ore of uranium and not dangerous... if you don't keep it in your pocket all day. Weirdly plutonium is far safer as it emits only alpha radiation fully blocked by the upper dead layer of skin. As long as you don't eat or breathe it of course.

@screwaccountnames Жыл бұрын

The interesting thing about holding U-238 (for a short amount of time) is that you would actually be fine. You shouldn't do it for longer than a few minutes, or regularly, and you should definitely wash your hands thoroughly afterwards, but in terms of radioactivity getting into your body from just holding a lump of U-238, it's about comparable to walking through an airport security checkpoint.

@13thravenpurple94 Жыл бұрын

Great work! Thank you

@mothman7786 Жыл бұрын

Haven't checked in with Munroe in ages, glad to hear he's still active for crazy thought experiments

@GideonFrazier Жыл бұрын

Yesss. I already have my first copy of what if and how to! I’m so excited

@minerman60101 Жыл бұрын

"What If?" and "How to" were amazing, I am absolutely getting "What if? 2" and you should too

@chestersnap Жыл бұрын

Yaaaaaaassssss!!! I've been waiting so long for this!!

@j_sum1 Жыл бұрын

There are 7 elements named after bodies in the solar system. You forgot selenium and helium.

@dariocardajoli6831 Жыл бұрын

Love xkcd's comics this was a must watch !

@ambriz202 Жыл бұрын

just started binging xkcd's comics so this was a nice surprise

@capitalistraven Жыл бұрын

Lol, lucky you. It's amazing. Also the first "What If" and "Thing Explainer" and basically anything Randall touches.

@Calthecool Жыл бұрын

What If? 1 is my favorite book of all time, definitely ordering What If? 2 ASAP.

@IcarusGravitas Жыл бұрын

Great Collaboration Idea! Two of my favorites together. :)

@johnchessant3012 Жыл бұрын

What if that random town in Sweden was made of an alloy of yttrium, terbium, erbium, and ytterbium

@sisakhoza4739 Жыл бұрын

"Uranus' shockwave would reach, and destroy us, about an hour faster", I still have the mind of a child

@mattia_carciola Жыл бұрын

There are people like you and liars

@jannikheidemann3805 Жыл бұрын

@menigmatique Жыл бұрын

The original 'What If?' and 'How To' were some of the funniest most informative books i've ever read, preordered 'What If? 2' and definitely recommend it to anyone interested in channels like Minute Physics

@LostLargeCats Жыл бұрын

Thank you for the reminder about this book! I just pre-ordered it.

@Dirsmuutio Жыл бұрын

This is the collaboration we need!

@aster2790 Жыл бұрын

Damn imagine having an almost-planet worth of nuclear ore next to you We wouldn't even start existing to die from radiation

@JayC0306 Жыл бұрын

Thanks for the recommendation

@micahphilson Жыл бұрын

1:45 This is one of my favorite lines by Minutephysics ever. Says you're hot, then talks about Uranus, which is very big.

@Marenthyu Жыл бұрын

What if I, too, already preordered "What if? 2"? Should be here in 5 days from now!

@lolicantthinkofabettername3437 Жыл бұрын

1:42 so what you are saying is that if we mede a pile of humans large enough we could burn the centre person to death? (Neglecting death by shear weight ofc)

@jannikheidemann3805 Жыл бұрын

You can produce human gas and charcoal that way. Don't try it at home, your neighbours will thank you.

@tontobonto2073 3 ай бұрын

Bees use this tactic to kills wasps

@TheMightyZwom Жыл бұрын

THERE'S A PART 2!? AWESOME! :D

@7head7metal7 Жыл бұрын

What an awesome collaboration!

@LordPhobos6502 Жыл бұрын

I LOVE THE WHATIFS!!!!!!!!! ❤❤❤😊😊😊 Please do more of these videos 😁

@hokage102364 Жыл бұрын

I've been gleefully sharing the fun fact that humans give off more heat than the Sun per square inch and that the Sun is only hotter than us since it's so much bigger than us since I was like 6. I think I learned that in some random science trivia book. This is actually nerdier lol.

@I-Maser Жыл бұрын

I dont understand how this should work, could you explain further? Since in the video he says a chunck of the Suns *core* , but since the core undergoes fusion i cant see how this should give of less heat than a human. The surface of the sun however makes some sense

@evannibbe9375 Жыл бұрын

Change that to “per cubic inch”

@I-Maser Жыл бұрын

@@evannibbe9375 well how exactly is a human body able to give of more heat per cubic inch than the suns core, which is literally undergoing fusion?

@alexsiemers7898 Жыл бұрын

@@I-Maser it’s likely that the sun, even with as dense as the core is, can only go through so much fusion per unit volume, and once again it’s just the immense size of the core that gives it the energy output we know. I did some “”basic”” math just based on the solar output measured at earth’s surface (~1.4kw/m^2), used that to get the sun’s total output (surface area of a sphere the size of earth’s orbit, multiplied by that energy per square meter) and found that a solar core twice the diameter of earth would average 8 watts of energy per cubic _meter._

@I-Maser Жыл бұрын

@@alexsiemers7898 so the sun is producing more energy than a human, but cant give it off as fast as we do, cause it can only radiate heat away, unlike us who can also give heat of to the Air. Right?

@douglasstrother6584 4 ай бұрын

"Burnin' For You" ~ Blue Oyster Cult (1981)

@rhealgagnon1460 Жыл бұрын

Bro the sense you make out of nonsense ,,,it's amazing 👏

@ZenZooZoo Жыл бұрын

What a collab ❤

@Playful_Target 7 ай бұрын

1:54 "uranus (big)" that's sus

@samueldenning6578 Жыл бұрын

I didn't know there was a second book! I have to read it. (I loved the ending for this video, great job MinutePhysics)

@IgnatRemizov Жыл бұрын

I bought the first What If and Thing Explainer when it came out, this is definitely a must-buy book!!

@ieatgarbage8771 Жыл бұрын

I was gonna say “what if they were at the farthest points in their orbits?” But the earth is so close to the sun that it barely matters.

@CaTastrophy427 Жыл бұрын

But what if the sun was exactly in the way?

@ieatgarbage8771 Жыл бұрын

@@CaTastrophy427 idk im not a scientist

@smugbowkid9919 Жыл бұрын

Randall Munroe is such a great comedian, and actually educates me through comedy. It’s super epic, I love his books and his comics.

@CarlosBallena Жыл бұрын

"But we were talking about Uranus..." subtle... nice!

@brendaninglis_333 Жыл бұрын

This collab is incredible

@A_Loyalist 4 ай бұрын

Sun people (as defined as human sized chunks of the core of the sun) are cooler than me, but I'm hotter.

@catkook543 Жыл бұрын

2:18 Might want to set an epilepsy warning for here

@jimmysgameclips Жыл бұрын

Me: "Is there a What If 2?" 3:10 "Yeeeessss!"

@peterandersson81 Жыл бұрын

Dear Randall, I am a huge fan of your work, and this is once again simply excellent! Some notes on the terminology though. Fissile nuclides are such that can be fissioned by a thermal neutrons. All fissile nuclides can support a self-sustained nuclear reaction and U-235 and Pu-239 are famous examples of such fissile nuclides. Np-237 however is not fissile. Since it has already an even number of neutrons, it is not as energetically favoured to absorbing another one, as compared to the fissile nuclides which have an odd number of neutrons. However, as you correctly shown in the video, neptunium-237 can still support a self-sustained chain reaction. The reason for this is that the fission neutrons have more than enough energy to split that nucleus, since they are not thermal to begin with. So therefore, Np-237 can indeed be used in a nuclear explosive device (or planet). This feature of the nuclide is sometimes called "fissible". Fissible nuclides can support a self-sustained chain reaction, eventhough not being fissile. It is notable however, that sometimes all of these nuclides are grouped together and called fissile, so that can be said in your defence, but it is wrong in my opinion (or at least confusing) to call them that. Finally, regarding the plutonium, most isotopes are either fissile or fissible. So it wouldn't matter much which of the isotopes you chose for pluto, from 239-242 at least, since most of them are either fissile or fissible. Although, I don't remember if your unusual pick of Pu-244 is fissible or not. Pu-244 has the longest halflife of plutonium isotopes, but it is very unusual since not produced much in the uranium fuel cycle. Sorry for the nitpicking. I really liked the video!

@felixar90 Жыл бұрын

If mercury was made of mercury, would it turn into a perfectly smooth nearly spherical mirror, and not appear brighter but be actually pretty much invisible most of the time, because of the specular reflection reflecting almost no light at earth? Also, If mercury was mercury, would it be solid, liquid or gas? Or maybe it would have a mercury cycle? It would be much more reflective, so it wouldn't be as hot, probably?

@dicyanoacetylene6220 Жыл бұрын

Ok, but if we have control of exactly when the planets turn into their corresponding elements, what if we wait for Neptune to be on the other side of the sun from us? What problems arise from this? Edit: this was apparently not as clear as I thought. I was implying that we would try to use the sun to block the high energy blast wave that would've otherwise been heading directly for us. Does the destructive wave get stopped to a relatively survivable level, or does enough of it make it around the sun (do to diffraction) that it makes little difference? Or does something else happen, like yes, the initial blast is stopped by the sun, and we are close enough that whatever is able to make it around the sun still won't hit us, but it still imparted enough energy into the sun's atmosphere that it caused a coronal mass ejection that is going to hit us instead? Things like that.

@CaTastrophy427 Жыл бұрын

Yeah I kinda wanted to know what that explosion would do to the sun, if anything

@thaddeusgenhelm8979 Жыл бұрын

While impressive and energetic, based on my understanding of the energies in play I don't think the sun would be as impressed as us. Like, just consider that in this example the blast leaves the earth itself in one piece, if heated and without an atmosphere. If it won't even seriously disrupt our little iron ball, what's it going to do to the sun?

@incognitoburrito6020 Жыл бұрын

Extremely rough estimation--that puts it only like twice as far away, meaning it'd only be about a quarter as bright. Unless the sun interferes somehow. With such a resounding "everyone on earth would die," I doubt it would make much difference.

@dicyanoacetylene6220 Жыл бұрын

@@thaddeusgenhelm8979 That's kind of the point, use the sun as a blast shield so we can potentially survive a nuke the size of a planet.

@thaddeusgenhelm8979 Жыл бұрын

@@dicyanoacetylene6220 Ahh, okay, I thought you were wondering about its implications on the sun, not the value of the sun as a shield, my mistake.

@AfgonYT. 11 ай бұрын

When I first watched this video, I had no idea that he had made a sequel. Eight years later, and he released the sequel to one of my favorite books on my birthday!

@jackgreenearth452 Жыл бұрын

So glad you made me aware of this, I already pre ordered it!

@sayethwe8683 Жыл бұрын

what would the shockwaves be propagating through? There's not enough interplanetary media to transmit that wave, and I imagine because of the sheer distance only the barest fraction of the exploded planets would actually hit earth.

@puo2123 Жыл бұрын

The physical matter and radiation would propagate through the vacuum of space and form the ''shockwave(s)''. One traveling with the speed of light and the other one slower. Yes you are right only a small amount of the explosion would effect the earth. Check out en.wikipedia.org/wiki/Inverse-square_law

@scottrobb651 Жыл бұрын

same principle as an supernova. The explosion would turn to the matter into an plasma and become it own transmitting medium. As for it destroying the earth i tried to do the math and my brain protested, so I can neither confirm or deny that assertation.

@uelssom 4 ай бұрын

0:01 why is the & backwards

@kiri101 Жыл бұрын

Now that's a sponsor I can actually get behind. Munroe's work is amazing.

@andyscipser6317 Жыл бұрын

Thanks❤️🥰

@ligmanuts2015 Жыл бұрын

3:21 What if Japan disappeared? BORN IN A WORLD WITHOUT ANIMEE

@blu_223 Жыл бұрын

0:15 nice voice crack

@slavakid5336 Жыл бұрын

i don’t hear it

@blu_223 Жыл бұрын

@@slavakid5336 listen carefully when he said "composed"

@soisaus564 Жыл бұрын

Best voice crack in 2023

@overlord-6644 Жыл бұрын

OMG I loved the first what if book, I didn’t know there was a second!

@aerobiesizer3968 Жыл бұрын

The information that I didn't ask for but absolutely needed

@bsku0765 Жыл бұрын

Best stick figures xd

@MrAqr2598 Жыл бұрын

3:22~ As a Japanese, that's so uncalled for.

@cycrothelargeplanet Жыл бұрын

have fun living in W A T E R

@woodrobin 2 ай бұрын

And the audio book version is read by Wil Wheaton!

@Wick9876 Жыл бұрын

At 0:55 not including Rankine is so subtle yet I swear it had to be deliberate.

@dayhaysuper3639 Жыл бұрын

I love plutonium

@rQuilln Жыл бұрын

Beginning of the vid: "Spoiler alert, This doesn't end well." Most of the viewers: "Yeah, the earth doesn't end well." me at 2:46 : Yeah, they doesn't end well.