Was about to say this.

Not basically, diesels are just a little more complicated than the tube and plunger he used

​@kingofspain18077 This is exactly how a diesel engine works. Air is pulled inside the cylinder, and the piston then moves up compressing the air inside causing it to heat up. The only difference is the fuel is misted in towards the end.

​@mattc222 no need for that. I got Cosby sauce lol (ether)

@@jeffhall768 good ol Cosby in a can. MIIINT!

Next gen fuel: cotton balls

Was thinking the same thing 😂

Came to say this lol.

Very diesel literarely cotton on heat

This comment makes 0 sense

I was wondering if it could be used that way. Thanks for dropping it here so I can look it up.

Thanks! I couldn't think of the name of this and I've tried telling people a out it that don't believe me lol

Nice to know

what is called and how to use it ?

@@chucksauter1204 people being people kkk

Ignition from compression in a gas engine is usually the result of the wrong octane really. Each grade has different combustion ratios.

@@JakeKentner right, which is not good for the head gaskets or valve seats in an engine specifically designed to run on spark ignition.

no body care, its useless for the comprehension of the experience... so you are uselesss man

@@pedrourbano501 that is not at all correct. Not even a little bit other than the part about diesel fuel being an oil. The viscosity has nothing to do with compression ignition

Right. It's called pre-ignition or knock. Diesel pistons are much heavier and cases much stronger, so they don't care when exactly the boom occurs.

@@couchpotatoes5158 on the contrary, compression ignition is diesel mechanic 101. Even if a diesel mechanic did fit the flawed stereotype of a knuckle dragging oaf they’d still understand how and why.

​@@couchpotatoes5158we are mechanics because the science of how things work interests us and we like to fix things. Any decent mechanic understands what they are working on and how it operates and the principles on how it operates. We literally diag shit all day long with no compression. Why would we test for compression if we didn't understand why it's important?

@@evandrewmartinez1 because “mekanic stoopid”. Couchpotatoes is a someone who’s had the term “gay-lussac’s gas law” copied onto his clipboard for a while now I think

@@couchpotatoes5158 youve definitely never had a theory lesson in your life

If mechanics were stupid then why in the sam hell can’t the folks who shit on them all the time live without them? Real fuckin’ goofy of those folks to bite the hand that makes sure they can drive to get to the hand that feeds them. Appreciate mechanics y’all. They’ve probably helped you in ways you cannot imagine or would ever realize.

ah. So that must be why a lot trucks sound slightly different from cars. They have different engines

​@@HumbBumbhe shows a gas engine tho

@@crestothegecko6279 Diesels in general sound a bit different than gas engines

​@@HumbBumbhe shows a gasoline engine because he talks about "compressing fuel vapors before igniting them". That's a gas engine.

​@@drcashmoney7507does not matter. Gas engines will do the same if they are used with the wrong fuel. At least for a short time.. 😂

Lol! Like at the magazine rack at the gas station... "You gotta pay for that if you wanna read it..."

there still ads on youtube ? #adblock 4 life .

"I Will Not Die A Monster."

You know how much I sacrificed!!

“You best start believing in origin stories ,Parker.” “You’re in one!”

​@@deathchilde "com grandes poderes veem grandes responsabilidades 🤕" Um segundo depois: 😵💀💀

Brilliant but lazy

Considering the recoil system probably contains a lubricant, then yes, you did.

@@crd-nz_001 Well, the pressure would've ignited the oxygen. The oil too, of course. I called up one of my old 5 inch tech buddies and they confirmed this.

​@@billparker244battleship? Or cruiser? Looks big enough to cause ruckus if it exploded

@@hanif7592 Cruiser and yes. There's no barrier between the gun and the loader room where the drum is. You can climb up into the gun shield for maintenance. It has a net that slides closed which is locked by a key that goes into the power distribution panel. In theory, you couldn't be up there while it had power for safety reasons.

@@billparker244 they're lucky to not have them n2 replaced. Thanks for your service mate💪

Right Thermo 1 and 2

You've broken the first rule of thermodynamics. Rule number one about thermodynamics, you don't talk about thermodynamics.

​@@aland7236 Things I learnt in thermo is that higher the pressure lesser will the volume lesser the volume higher will be the temperature higher the temperature heat production will increase

Uhhh I am very bad in studies so idk it was in equilibrium or thermodynamics.....idk so...........

It is an adiabatic process, in which heat transfer is 0 and all work is used to increase Internal energy of gas and thus the temperature also rises.

Oh right!! I remember that lol. You unlocked a memory for me 😂

fire piston :D

Man, 2006 was great.

I gotta find it now lol

Yeah, I remember that. lol. One channel even made a documentary about some tribe in south east asia who've been using bamboo piston fire starters for (presumably) thousands of years. Clever alternative to flint or fire-bow.

Literally for hours we be finding victims of this contraption😂

Ok mr Pyro😂

Only cotton and a few other materials ignite like that.

@@al-imranadore1182 isnt going to stop me from trying everything like coffee creamer and what not.

I could see a kid putting an ant or roach in there. The horror. lol

Nice

Legend

Came to comment this same thing. However I can confirm that if you don’t add too much oil or Vaseline you can still get quite a bit of extra velocity without destroying the seals right away. I’ve fired easily a couple hundred dieseled pellets and the gun still works great.

@@maukaman I used to put Hoppe's lube oil on the o-ring. A light film is enough, but I noticed that a drop or two would make the next few shots crack like a .22 if I gave it more than 3-4 pumps. Accuracy was garbage tho!

What happens if you put ethanol in there?

Or when you freeze your hand trying to refill a butane lighter 😂

also how air conditioning works. Compressor does exactly what it was named for and then the evaporator expands the refrigerant to cool it. We've really come a long way with technology.

Or when I’m spraying the last bit of deodorant out of the can

Yep, you can calculate the exact temperature change using Gay-Lussac’s law

No, this is evaporation!

sun doesn’t combust tho😭

Solar plasma ≠ fire

@@billyrussell7789 no, but it goes get got. Same with the Earth's mantle

@@SilverStarHeggisist yeah just cause it hot doesn’t mean it has “caught fire”. fire is a product of combustion, not of fusion, fission or friction

@@billyrussell7789 however for the purpose here, it's semantics. Because something that has gotten as hot as the sun will catch things on fire.

surprise buttplug!

I believe in "El Coochino"

@@HGKEntertainmentit says El Cocinero, meaning The Cook in Spanish I believe

😂😂😂😂He might turn around and stir a paella any moment😂😂😂

​@@grbadalamentiHe be cooking meth

it means cook. Obviously a Breaking Bad reference. @@Nehauon

Yep, in Malay culture/tradition this was a equipment they use for fire starter which made from wood & steel around the 17 centuries. I used it few times when i was a kid but nowadays people just use lighter

isn't flint stone ignition simpler and easier to riproduce in nature?

bro just craft flint and steel 💀💀

@fieryr Depends on a lot of factors. A planned trip and both options are equally viable, so let's look at SHTF scenarios. Would the person recognize flint or one of the other stones that will spark off of carbon steel (since stainless won't work)? Are they in an area with flint? Most knives anymore are made of stainless steel, so it's unlikely most folks would have a carbon steel knife unless they specifically selected it. Since stainless won't spark, its unlikely a person would have the right materials unless they carry a SHTF kit all the time. A fire piston can be made in the field with natural materials, but the skillset takes practice, so it's not something that somebody can just watch a vid and then hope to pull it off. I personally don't depend on the fire piston but I won't write it off. I carry multiple fire-starting options every day for that reason.

Since pharaonical times. The old egyptians used fire pump igniters.

Shut up

Fr and she tried retroactively try to accept that meme so she didn't look embarrassed😂😂😂😂

No shush I don't care

AHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH

​@@max3eeyyou commented seems like you do care after all

What a guy

Huh interesting, i always thought thus was how guns work

How did it save your life? What’s the story?

Yeah what's the story

Survival… 🤔where?! Some place a piston or copper pipe is located. And maybe some bottled water, pots/pans, and a radio too😂

@Jonesybabie These are skills, materials, and kit that you should have gathered and made work well in advance of needing them. Even though things are vastly different than when I learned about this, I''m sure you can find these items still for sale and can make the best piston and cylinder your mind can imagine. The things you have mentioned should be close to the first things you ALWAYS have anyway. Especially if you're in a Survival or SHTF situation. And remember, this was only one of many ways to create fire. Learning and practicing survival/SHTF skills is on the individual. I have done, and continue to do, my homework, build up my kit over decades of trials and errors, practiced, practiced, and practiced some more. Learned what works and when to use the skill/tool to accomplish tasks. If you don't have your kit (knowledge, practiced skills, tools/materials, etc.) ready to go at a moments notice, then I would urge you to develop that area of your life. Especially with the state of the world these days. Good luck and keep learning.

Exactly 💯

So what exam are you preparing for? Genuine question.

@@feastbeforeheat NEET

@@vaibhavgupta8681 All the best brother!

@@feastbeforeheat Thanks🙏

also how they literally boil water with the speed of their punches

This phenomenon is called cavitation in physics you can Google it for more detail

thats also how i do that

​@@acm-gs6blThat's pistol shrimp. And fwiw, it's mostly for self-defence. (They mostly just eat little bits from the sand near their burrow.) I had one who felt threatened when a curious little blenny got in too close, and the poor little fish was paralysed from a brain/spine injury. He laid helplessly on the bottom of the tank for a while, and I honestly can't remember wherher I was able to help him or not. All that from the immense pressure & heat j in bubble by the pistol shrimp's claw pop; the claw didn't touch the fish.

I personally use it for ramen​@@Crystal-58

Cool I might buy one for my camping pack to use in emergencys

Char cloth is your friend. Fire roll lint with ashes works too. Not too hard. It will self ignite.

... and as old as old pharaonical egypt, at least. They did use fire pump igniters back then.

Hell yeah, fire pistons are dope

I have one in fact it's a weird-looking lighter never knew what it was it had just been sitting in my drawer for quite some time until I came across a video about it

How do you get the fire out of the piston

yelling@@thestone8187

I actually thought this was a fire piston!

What should it look like now?

@@gumpus5490 ​​⁠Valves would be angled in the same direction as the flow of air to reduce turbulence and aid in the flow into and out of the combustion chamber. Whether air or water, you don’t really want right-angle turns as much as possible. Gentle bends/transitions optimize flow.

٠

I was gonna ask what materials they could have used to make a good seal. Then I realized I forgot bone and horn existed, which both come in the form of convenient airtight tubes. Apparently bamboo works as well, which I had not guessed would be the case. Neat case where indigenous technologies went off on an entirely different direction and culminated in a product arguably superior to the European equivalent.

For millennia? Jesus was using diesel pistons in Galilee?

Millennia sounds like a stretch but ok.

@@vincejohnm Wiki says “The antiquity of the fire piston in Southeast Asia is unknown, but it definitely pre-dated the Austronesian colonization of Madagascar (c. 100-500 AD).” But we all know the reliability of that site.

@@-ZH according to some tribes anything that wasn't invented in Europe of the 18th century and later doesn't exist. regardless of the reliability of wikipedia.

That’s not really a good explanation

Its cool how to capsule is so fast the air around compresses adiabatically. But on a large scale even weather is based on adiabatic processes because gasses are so poor at transferring heat

Ok, you’re pretty close but there aren’t two phenomena at play here. There’s just an adiabatic compression. “The term "friction" is a misnomer. The source of heat is adiabatic compression - gas on trajectory of the reentering object is compressed against its leading surface, and as result heats up.”

@@teeanahera8949 ah ok. There's no real "friction" Thank you for clearing that up :)

​@@UnknownMFemaybe friction would only be real friction with solids? Not sure.

⁠@@UnknownMFethere is very definitely “skin friction” in fluid flow (gas in this case) over a surface as the fluid passes over / around it. That’s one source of aerodynamic drag, and it does, in fact, produce heat.

How I hate to agree with you on this one. Totally relatable.

Can you explain further? I don't understand

You are not wrong. Gas/petrol vehicles hand very poor compression ratio su they majev that sound when it fails

That's rather physics than chemistry, though

It's engineering and specifically this course is an internal combustion engine

This is definitely not engineering. It’s chemistry.

The fireball lasts for a fraction of second. It probably would hardly leave a first degree burn, let alone "vapourise" them.

@@xxfalconarasxx5659 You clearly don't know the tempratures we are talking about here. Based on math calculations in a reddit thread it would have reached closed to 1 726.85 degrees celsius inside the sub. At that point the time of exposure is not your biggest problem

@@JoachimFosse I know quite well the temperatures we are dealing with. It's estimated that the fireball is about half way the temperature of the Sun. However, this is also the temperature you'd get from the detonation of a hand grenade. The temperature of a lightning strike is about 30,000 C, well over the fireball temperature inside the Titan. Most victims of lightning strikes are not reduced to ashes, because of how brief the exposure is. So my point still stands.

Lightinging uses most of its energy going through the air by the time it reaches the person it is much less powerful

@@xxfalconarasxx5659 Isn't what cools it down in the video decompression. That sub stayed compressed, no energy lost to decompression right?

Or, am I?

One thing we know is, at least they won't even register they just died. they probably hear the clank and crack, but they won't even hear the water rushing in their sub.

Came for this comment 😂

How so?

It's crazy that full grown adults willingly stepped inside that tiny low-budget submersible, knowing it was going deep into the sea. The thought of it gives me nightmares.

​Fast enough for the brain receptors to even register, that's insane.

This is just physics. Joule-Thomson-Effect. No chemical reaction needed. The cotton was just to show that it gets hot enough to ignite stuff. Fun Fact Mr. Thomson was later ennobled and was afterwards known as Lord Kelvin.

@@katzofant thanks bro for sharing this such information with me💫🌟

I know it as adiabatic compression. But yeah indeed this has nothing to do with chemistry except that the cotton burns from a carbon compound to CO2 and H2O

I was scrolling through the comments looking to see if anyone has a link to this thing for sale and I saw your comment hahaha

ye, but webare of the fuel they'll use😂

It's only a matter of time before they figure out they can light fires with it.

Its not the early ignition, what wears the Engine and makes the knocking Sound. If a Gas Engine Knocks, there are basically two explosions happening: one explosion from the autoignition and one initiated by the Spark plug. When they Hit each other, a pressure Spike makes the Sound and puts huge wear on the Engine. To preven this, there are Sensors which can tell the ECU that the engine starts to knock. The ECU then fires the Spark Plug earlier, so the autoignition can't Happen anymore as there is nothing left to burn.

Also engine run on or dieseling.

​@@walterbishop2 what are the causes of engine knocking and can it be prevented by high octane fuel

Thomas midgley Jr. had the idea to put lead in gasoline to stop engine knocking There's a KZfaq video called " how this man accidentally killed the most people in history "

@@rexruchi Depends on the Engine and the Fuel. Most modern Engines can run on Fuel at least one Grade lower then they are designed for, with the cost of less Power and more consmpumption. As anything less then 95 Octane went extinct in Europe decades ago, Knocking because of Bad Fuel isn't a Thing Here anymore. An Engine can also knock for other reasons, such as wrong Spark plugs, running too hot, massive Carbon build Up etc.

I think the reaction is not about what hes seeing but the force of the combustion meeting his hand

I love when scientists have the same sense of wonder about what they do that an average joe like me feels when seeing some of the stuff they do.

@@Sam-us1he I love (okay, not really) when "scientists" on KZfaq pretend to be amazed by shit we've been doing for a hundred years like they invented something.

@@sarcasticguy4311 Most of them probably aren't pretending. People with a scientific mind and a sense of wonder for the natural world are much less likely to get tired of seeing these things than other people. There are things I've seen a thousand times that I still stare at in awe every time because it's just that cool to me. Even something as simple as a blue sky or green plants. The more you know about how all of these things work and why they are the way they are, the harder it is to take them for granted, at least in my experience.

Indeed science is like a game ,or a story science teachers should be either fun or good story tellers

learning from your WHAT ⁉️⁉️⁉️⁉️🤨

A friend and I made about half a dozen of these, they are called a Fire Piston. If you use char cloth instead of plain cotton, the ember will persist long enough to be pulled out and used to start a fire. Been used for centuries actually, even primitive versions made of bamboo!

Yeah Survivorman Les Stroud uses one in one of his videos.

@@Vikingwerk I remember seeing the it made from bamboo actually! Lol

​@@iamgriffThat was how it was made traditionally

You can start a fire with a hammer and a nail

Wut

@@couchpotatoes5158 I said "This guy's going to freak out when he hears about a diesel engine."

​@@JoeShopperLOL (and I want to stress the last "L")

This guy is the type of person to teach someone what they need to invent diesel engines.

Unnecessary...just pump up a bike type with a hand pump & if do it fast you won't be able to hold the bottom of it as gets hot from "heat of compression"

The compressed air pressure built up in the cylinder also is part of the contribution to the power.

Unless they are knocking

Well... Mazda do it with skyactive X motors. Copy from a article... the Skyactiv-X engine will use high compression to ignite like a diesel, running a very lean air-fuel mixture and reducing emissions. But when you step on it, the Skyactiv-X acts like a regular supercharged Atkinson-cycle gas engine. The ignition process starts with a spark before the engine's increased pressure is used to heat up the cylinder and ignite the rest of the mixture without further help. ..and that was in 2017... We still better tech as EV 😏 Chill out.✌️

@@ultrastoat3298 yes, that's why high compression gasoline engines require premium fuel, to prevent premature ignition due to this effect.

Would gasoline not catch fire if compressed? Or that happens only to diesel?

Elaborate please 🥺

kzfaq.infofrmNjuWrzJg?feature=shared

@@Safe_intentions It is a fairly simple law. If you go camping and you use a gas stove, you might notice ice build up around the regulator. This is what you are seeing. It also has some impact on aviation at high speeds, and can lead to a slight warming of the fuselage and wings.

@@flare9757 okay 👍🏻 got it During use, Gas is released so Pressure inside it decrease As the temp is directly proportional to pressure and vice versa The pressure decreased results in formation of frost right ? 💯

@@Safe_intentions Yes, if it gets cold enough. Inversely, if a container is being pressurized, temperature goes up. It is weird until this is explained.

Whoa.....cool....a diesel guy

@@HalideHelix big diesels tho. Not those cute little pickup ones

Same here lol

🙄

​@@Redbikemasterno, the cute little ones, too. They all work by compressing the air to the point of the heat igniting the atomized fuel.

This is a replica of a fire started that gave Rudolf the idea for his engine. Read the Mysterious Case of Rudolf Diesel. It is an interesting book.

nah thats because of the rubber piston rubbing on the inside of the pump creating friction = heat. a bike pump gets nowhere near the pressure needed to ignite anything

​@@s1lh0u3xthat's not correct. The temperture exist of atoms that are moving, the more they move the hotter it is. By compressing the air the it gets way hotter, and to prove this, take a pump tube with the rubber inside but not let it build up pressure. You will notice it doesn't get near as hot as normally.

The opposite of this may be a whip cream or duster canister cooling down quickly as it releases pressure.

Nope, that's exactly why. Friction does cause some heating but the majority comes from the compression of the air. You can actually cause the pump to get extremely cold if you pull up quickly and then press down slowly.@@s1lh0u3x

You got me in the first half not gonna lie.

Fire pistons were actually invented by cavemen. They've been used for thousands of years. Also, in part what Diesel used as inspiration for his engine.

excellent point!

Well I didn't understood it.. When he Squeezed It Pretty sure Volume decreased, And Pressure increased So How Come Temprature Increased there

@@lightbringer485When you squeeze gas, the atoms get closer even when they don’t want to. This makes them vibrate around a bunch which makes it hot.

​@@john-ic5pzpointless point. Just imagine high pressure low temperature air around cotton. Will it ignite? I doubt it.

​@@lightbringer485 Some of the work done by the piston goes into heating the gas. On a microscopic scale it could be explained by molecules hitting the moving piston. As the piston is in motion relative to the gas, on average those molecules will gain velocity. For a thermodynamics description, have a look at adiabatic compressions.

That's actually really interesting, never thought that could happen, I always thought it was just friction and that it didnt have enough pressure to make it heat up since it's in open air and not in a sealed chamber.

​@ElPsyCongroo. At supersonic velocities, the air can't move out of the way fast enough. So, in a certain sense, the air itself is a "cylinder wall"

That's true. Friction is one but not the only reason. 👏

gets hot from "heat of compression"

what's more interesting is that a lot of the heating is done by radiation , not just conduction. the compressed air in front of the re-entering object is so hot that it turns to plasma and emits a ton of EM radiation. this in turn interferes completely with any telecommunication system during that stage of re-entry