What's The Fastest Direction To Fly Around The World? DEBUNKED

Рет қаралды 63,078

14 күн бұрын

How does the Earth's rotation affect the speed of an aircraft and duration of a flight? Why is it longer to fly east to west? How does the Coriolis Effect and Jet Stream affect this? Join us as we explore and explain this phenomenon! 👉 To try everything Brilliant has to offer for free for a full 30 days, visit brilliant.org/debunked/. You’ll also get 20% off an annual premium subscription.
#debunked #sciencemadesimple #funscience #jetstream #mythsbusted
CHAPTERS
00:32 Which direction is it fastest to fly around the Earth?
01:06 Laws Of Motion - What Is Inertia?
03:49 The Jet Stream In Simple Terms
04:31 The Coriolis Effect In Simple Terms
06:59 The Jet Stream Explained
07:57 How Do Planes Use The Jet Stream?
08:14 How many Jet Streams are there?
09:30 Learn about science in fun interactive games and puzzles with Brilliant.org
What is Coriolis force in simple terms?
What is the Coriolis effect simple sentence?
What is the Coriolis effect GCSE?
What is the Coriolis effect in simple terms?
What is the jet stream in simple words?
Where is the jet stream?
How does jet stream affect weather?
Does rotation of the Earth affect flight time?
Does the Coriolis Effect affect flight time?
What affects flight duration?
How does the Earth's rotation affect the speed of an aircraft?
How does the rotation of the earth affect air travel?
Why Flying Against The Earth's Rotation Doesn't Speed Up Flights
What is Newton's First Law Of Motion?
What is Inertia?
CREDITS
Stu K - Researcher / Writer | Illustrator | Producer | Presenter
Mark W - Researcher | Writer
Ross W - Illustrator | Editor | Animator
Vaia A - Scientific Advisor

Пікірлер: 145

@DebunkedOfficial 12 күн бұрын

What's the worst flight you've ever had?

@inshort58 12 күн бұрын

A very unwell person staggered towards me down the aisle and then puked right at me, I just managed to jump up on to my seat in time as it smattered all over the floor and front of my seat. I was then moved to another seat... a wet one.

@PassportPowell 12 күн бұрын

Flying to Italy and couldn't land due to wind. They attempted 3 times so we has to go elsewhere

@DebunkedOfficial 12 күн бұрын

@@inshort58 Oh dear that's so unpleasant 🤢

@DebunkedOfficial 12 күн бұрын

@@PassportPowell Must have been a little scary, how much further did you have to fly to land?

@rogerk6180 12 күн бұрын

Any ryanair flight..

@MarcPagan 12 күн бұрын

From a pilot - Well done :) FYI, we use winds aloft data to pick the best flight altitude - for max ground speed, and minimum fuel burn. Ex - Report near Denver - 18,000 feet - wind from 220 at 55 knots 24,000 feet - 230 at 76 knots 30,000 feet - 275 at 98 knots

@troy3456789 12 күн бұрын

ha ha! fly across the Atlantic in a 230mph C-130 and discover what a long, loud flight really is like

@MarcPagan 12 күн бұрын

@@troy3456789 Thank goodness for noise cancellation headsets :)....especially when teaching in or flying light training piston aircraft.

@accidentinstrument 12 күн бұрын

@MarcPagan this might be a stupid question, but as a pilot, can you ‘feel’ the difference?

@MarcPagan 11 күн бұрын

@@accidentinstrument Feel the dif in wind speeds and direction? If that's the question - No, but wind's impact on ground speed and required course correction are evident.

@apocalypse487 10 күн бұрын

@@accidentinstrumentbirds probably can. You'll see them struggling to fly into the wind and then change directions. Or if they're hard headed, they'll continue lol

@Im_The_Roms 11 күн бұрын

0:29 "A plane move the same in any direction" "Or does it?"

@rogerk6180 12 күн бұрын

Is it the wind?

@rogerk6180 12 күн бұрын

Yes it was....

@StormArtificial 12 күн бұрын

@@rogerk6180and it’s a… 11 minutes long.

@user-ln1ec9qr5y 12 күн бұрын

That's my guess.

@user-ln1ec9qr5y 12 күн бұрын

That's my guess.

@babakush9772 12 күн бұрын

That's my guess

@matijakralj8860 8 күн бұрын

But what about long-range shooting? "Coriolis effect is a product of the Earth’s rotation and, in the case of firearms, moves the target away from the original point of aim when the bullet finally arrives. Total deviation is determined by time of flight, shot direction (azimuth), how fast the planet is moving at both the firing point and target and more. It’s dictated by a lesser-known Coriolis force that, thankfully, includes inertia as a key component" And: "All shots, regardless of hemisphere, will impact lower than expected when sent west and high when traveling east." And this: "The Earth is a sphere. So, targets to the west are rotating toward you and rising slightly on the horizon (atop the planet’s circumference). The bullet, in theory, continues toward your point of aim, which is no longer there because it’s moved up."

@Neodynium.the_permanent_magnet 8 күн бұрын

Warning: Using a vinyl record for the demonstration may encourage those who believe the Earth is flat!

@noname117spore 11 күн бұрын

Interesting question: If SpaceX Starship Earth to Earth ever happens (I'm doubtful), would flights on it be faster in the East to West direction due to the carousel explanation, since air currents wouldn't have a heavy impact on a rocket's flight path? Conservation of momentum does very much exist, but we have to remember we're talking about a sphere. Without modelling in the atmosphere the hovering harrier would have to travel a longer distance through a full rotation of the Earth, so if it was able to hover perfectly vertical the entire time the momentum conserved from taking off from the Earth wouldn't be quite enough to complete a full rotation, say, 500m off the ground in the same amount of time as Earth. Albiet obviously that's a small enough change for a human pilot to easily correct for very slightly and by using the environment as reference points... But if we're talking about rocket travel, well first of all the peak altitude is higher, the atmosphere isn't that much of a factor in speed, and we're not considering a "hovering" scenario. I'm legitimately curious if the situation would be reversed for them (and my experience playing Kerbal of having rockets launched straight vertical usually drifting west a bit whilst in space is telling me it's likely).

@starmanxvi 10 күн бұрын

Yes, rockets travel much faster (~16,000 mph for p2p) than the Earth's rotation in either direction. Flying eastwards it would get a 1000 mph boost, and flying westward it would get 1000 mph slowed, this is why rockets launch east the majority of the time. You can think of this like standing on another conveyor belt (B) next to the bear (A) and you are moving much faster. When both conveyor belts are moving in the same direction, say A has a speed of 1 m/s and B has one of 3 m/s, meaning that their speed relative to each other is 2 m/s. Now let's say they are traveling opposite directions at the same speeds, their relative speed would now be 4 m/s while the independent velocity of each conveyor belt is still the same. This analogy doesn't work for airplanes as they don't have enough speed to overcome the Earth's rotation unlike rockets, this is definitely something you could try out more yourself in KSP as it is quite a fun experiment and a great use of the game's capabilities. Great question and hope this helps. (Edit: Holy crap I just took a look at your channel and you've been playing Kerbal for a few years less than I've been alive lol, it's so weird to see the game in its early stages like that.)

@sasu6094 12 күн бұрын

Very well done, love your videos

@DebunkedOfficial 12 күн бұрын

Thank you so much 😊

@Aarush.A.S 11 күн бұрын

@aleco250 7 күн бұрын

Great vid! And btw you should make a video about what really happened at chernobyl. I have seen a lot if myths and misconceptions about the disaster, especially around the HBO series.

@DebunkedOfficial 4 күн бұрын

Interesting topic 👍

@VictorSalendu 12 күн бұрын

You're amazing, great job!

@DebunkedOfficial 11 күн бұрын

Thank you so much 😊 Glad you enjoyed it!

@ten-dimension9390 10 күн бұрын

Wow. Your Method of teaching is so good. Thanks.

@DebunkedOfficial 10 күн бұрын

Thank you! Glad you found it valuable 😊

@olayusuf1503 12 күн бұрын

I was recently thinking about this 😮😮

@AnotherPointOfView944 12 күн бұрын

Great explanation as always.

@DebunkedOfficial 11 күн бұрын

Thank you 😊

@kristjanaristefansson9694 11 күн бұрын

I like the fact the map has 2 Icelands on it. Noticed it at the 9 minute mark

@supradragongalacticajr 12 күн бұрын

Wow, that was much more interesting I would guess !

@DebunkedOfficial 12 күн бұрын

We try to make our videos as educational and entertaining as possible... Edutainment 😉

@bnthern 12 күн бұрын

well presented

@DebunkedOfficial 12 күн бұрын

Thank you and thanks for watching 👍

@brianstieben9284 12 күн бұрын

Nice video! I have one doubt. At minute 5:44. Why does the hot air go north (and south also I guess)?

@icefreez3r815 11 күн бұрын

Air is heated up at the ground, rises up, therefore increases pressure at high altitudes. Less air north and south -> wind from high pressure to low pressure

@brianstieben9284 11 күн бұрын

@@icefreez3r815 makes sense. Thank you!

@patrickshannon4854 12 күн бұрын

Your record player is rotating in the incorrect direction.

@reshpeck 2 күн бұрын

Obviously you're going to fly slower into a headwind, but wouldn't the change in latitude have an effect as well? As you're moving south along your route from London your initial ground level momentum becomes relatively lower in comparison to the ground at the faster moving lower latitudes of New York, and on the return trip you'd be gaining on the ground in London. Surely this is a factor as well?

@Soundbrigade 12 күн бұрын

I think it has to do with relativistic effects from Einsteins equations… 🤔 Honestly, a very good explanation and definitely a “flat earth killer”.

@lonelyPorterCH 11 күн бұрын

Watching this at the airport travelling from switzerland to Los Angeles ^^ Lets see which way is faster (if any)

@j4s0n39 12 күн бұрын

Umm...jet stream? Edit: Oh, okay. In the first minute or so of the video I thought it was going to try to explain the flight time difference with rotation. I'm glad to see it went the right way.

@SJR_Media_Group 12 күн бұрын

We did that in 10 minutes in ISS and Space Shuttle..

@user-ln1ec9qr5y 12 күн бұрын

I will guess its like the gulf stream but happens in the air.

@Dont-jy5ox 12 күн бұрын

Wind current? Common sense.

@burieddreamer 4 күн бұрын

And why do the winds from the equator go north? It's not accurate when you say "it goes up" to describe "going north."

@MrPinkfloydian 12 күн бұрын

Very interesting and hilarious as always. I even got left with two (dumb!) questions. # One - How do pilots adjust the course according to the jetstream... since they can't open the window, lick their finger, and stretch the arm out so they can... feeeeel the jetstream? (😂) I'm off to search for what technology might that be 👍 # Two - Soooo could it be faster to return to the USA from London... flying east? 🤔 I'm off searching for the duration of the flight from London to Australia and Australia to the USA to make sure the flights keep going east... even though I'm certain that a flight from the USA to London does not equals to a flight around half of the Earth. But that's the idea... # Three - How long/length could compensate flying East from London? 🤔... I'm off to a chatbot right away 😂

@busterbackster1 Күн бұрын

Why a chatbot if your looking for an answer

@MrPinkfloydian Күн бұрын

@@busterbackster1 great reply! 👌

@DeaconHo 11 күн бұрын

Okay this makes sense.

@notorioustori 11 күн бұрын

Ah, it was exactly what I thought 😊

@hcmac 2 күн бұрын

called it!

@Shadowband 6 күн бұрын

Not called the jetstream for nothing!😅

@creeib 3 күн бұрын

How do you know what I think?

@timothytumusiime2903 11 күн бұрын

So.... With the difference in rotational speed at the poles and the equator, what would happen if a person was suddenly teleported from one to the other Would the airspeed slam into them and pulp their insides???

@DebunkedOfficial 10 күн бұрын

I like the way your mind works 🤓

@uncommonsimon5775 12 күн бұрын

Let's gooooo ANOTHER VIDEOOOO 🎉🎉 !

@DebunkedOfficial 12 күн бұрын

Hello! I hope you enjoyed this one?

@bvoyelr 12 күн бұрын

Waitaminute. "Air warmed at the equator rises, it moves toward the poles." I think that one warranted a lot more explanation -- it implies that the north pole is "up", and that's why the warm air moves there. The only hint you left that suggests that's not what's actually happening is that you clarified that the air only moves "up" in the northern hemisphere. I'm actually not 100% sure of the actual mechanism. I *think* it's that warm air, high energy air tends to expand to evenly distribute that energy into cooler, lower energy air (thus, the warm air at the equator moves toward the poles). Right?

@user-ln1ec9qr5y 12 күн бұрын

The idea that heat goes up is a misconception. Heat travels to less heated areas whether it's up or down. This can be demonstrated by putting a warm bowl of soup in your lap. The heat will go down. This is called convection. When you have a large volume of heated air gravity will play a role. Gas compress when cooled and expanded when heated. So not only can warm ground air transfer it's heat upward to cooler air the heated air itself will move. This is because the same volume of air contains less air molecules than an equal volume of cooler air. Gravity will cause the heavier air to move down which will push the less dense, i.e. warmer, air upwards. This is generally why people think heat rises and is also how hot air balloons. Bonus fact: when you include the different speeds the air moves you get the cause of all the weather in the world. When you include the vapor pressure, the capability of warmer air to hold more water, and land formations like mountains you get everything you need for all the weather on the entire planet.

@accidentinstrument 11 күн бұрын

@user-ln1ec9qr5y heat from the bowl of soup into your lap is conduction rather than convection I think

@user-ln1ec9qr5y 11 күн бұрын

@@accidentinstrument yes, you are correct. I was trying to dispel the myth that heat rises.

@user-ln1ec9qr5y 11 күн бұрын

@@accidentinstrument yes, you are correct. I was trying to dispel the myth that heat rises.

@user-ln1ec9qr5y 11 күн бұрын

@@accidentinstrument yes, you are correct. I was trying to dispel the myth that heat rises.

@pyeitme508 12 күн бұрын

Wow

@Nam3Iess 12 күн бұрын

As a drone operator, I figured this one out by myself 😂

@keestrommel0912 7 күн бұрын

5:10 The earth doesn't do a full rotation in 24 hours but in about 23 hour and 56 minutes.

@BersekViking 11 күн бұрын

The record is rotating the wrong way! :)

@troy3456789 12 күн бұрын

ha ha! fly across the Atlantic in a 230mph C-130 and discover what a long, loud flight really is like

@igorbondarev5226 12 күн бұрын

Two Icelands on the globe :)

@dwaynelangerhr6985 12 күн бұрын

It is very simple. If you fly to from London to New York it takes longer because London uses the Meric system and we here in the states don't.

@blasterdush4998 12 күн бұрын

shouldnt the south wind be to the other side?

@MariaMartinez-researcher 12 күн бұрын

If you mean the wind in the Southern Hemisphere should go in the opposite direction, no, it shouldn't, as the whole Earth rotates in the same direction, towards the East. The Coriolis Effect and jet streams work the same North and South. There is a difference, though, regarding the deviation of the currents of air from the Equator to the Poles, and that's why hurricanes, cyclones, turn counterclockwise in the North Hemisphere and clockwise in the Southern Hemisphere. Water in a bathtub or toilet can do it too, but it is too small a quantity as to be affected consistently.

@TheElusiveReality 12 күн бұрын

i flew nyc to england and back 2 weeks ago and the flight was only 6 hrs!! theyre getting faster and faster lmao

@SomeonewithaSony 9 сағат бұрын

Since when is going North same as “rising”? Northern hemisphere isn’t “up”.

@mpheleplayz930 12 күн бұрын

Hola

@DebunkedOfficial 12 күн бұрын

Hola!

@banthatracks_gaffisticks 12 күн бұрын

What about the time zone?

@DebunkedOfficial 12 күн бұрын

No, we mention that @0:12 Thanks for commenting. Hope you enjoy the rest of the video!

@NwordOutward 7 күн бұрын

Gravity?

@ntdscherer 10 күн бұрын

"The wind" is such a less interesting answer than I was hoping for

@JohnSmithEx 12 күн бұрын

Another physical effect not mentioned in the video is that flying eastward results in a greater angular velocity compared to flying westward. That's because the angular velocity of the plane is added to the angular velocity of the earth. This results to an increased centrifugal force, reducing the effort required by the engines to maintain the plane's altitude. The effect of this phenomenon at reducing the duration of the flight is minuscule compared to the effect of the winds.

@farangtravels3956 12 күн бұрын

It's the wind, everyone knows that

@BF-TREZ Күн бұрын

Yeah... He's got Ulterior motives

@learnmoreabout 12 күн бұрын

Aha a great topic! 🧠

@Jhenryx60 2 күн бұрын

Tail winds

@Koh-Wei-Jian 11 күн бұрын

Wind. A single word can summarize this 11min video

@harzemyalcinkaya 11 күн бұрын

Exactly. I got bored at minute 1 and barely finished minute 2. I guess the point they were trying to get was in the opposite direction of the wind.

@hoshyro 10 күн бұрын

You must be fun to be around...

@Koh-Wei-Jian 10 күн бұрын

@@hoshyro instead of wasting a full 11min to listen to this nonsense

@BF-TREZ Күн бұрын

@@harzemyalcinkayayour attention spam is worrying

@adityaajith6725 12 күн бұрын

Second comment 🎉😁

@NASA_sniper500 12 күн бұрын

Nice portable clock devices located on your wrest

@MarkLandrebe-ef5yd 2 күн бұрын

....the FASTER...

@philbarrett3739 12 күн бұрын

Irrelevant talking about inertia in your anology about someone jumping in the air on a conveyer belt as planes are in the air way longer than the person jumping.

@Phaeton667 12 күн бұрын

Facepalm

@adarmus4768 12 күн бұрын

Thanks for that insightful response Dunning Kruger.

@AnotherPointOfView944 12 күн бұрын

Oh dear, there's always one.

@Martin-ef4xh 12 күн бұрын

You DO realize that you gave "Flat Earthers" more fuel...right?

@Gibblegobblegoob 12 күн бұрын

You'd only think that if you're an idiot

@DebunkedOfficial 12 күн бұрын

😆

@MariaMartinez-researcher 12 күн бұрын

Not really. The difference in flight time is explained by the Coriolis Effect, which can only happen in a spherical, rotating Earth. In a flat, still Earth there is no reason whatsoever for the flight times being different.

@Martin-ef4xh 12 күн бұрын

@@MariaMartinez-researcher No, it was thing thing where he is using an LP (flat disk) as a model of Earth. LOL

@VIKINGzTH 12 күн бұрын

Flat Earth who?

@TheElusiveReality 12 күн бұрын

ngl all these weird ass theories you are presenting never ever crossed my mind, the only reasonable and rational idea that would come to mind is wind, we already know about the trade winds so why tf would i be thinking about the earth's rotation and whatever else???

@accidentinstrument 12 күн бұрын

Reckon the average joe has no idea what a trade wind is