Відео

Boyancy force¿

Also known as a Tilly lamp. I used to use one when I was a teenager, for night fishing.

Very nicely explained, the graphics are super the content is truly scientific and easy to understand 100/100 for everything 🎉🎉🎉🎉🎉🎉🎉

Great channel ❤

RTFM as Some like Coleman(R) Lamps and Stoves can or *require* "white" gas or "Coleman Fuel." In Sort... "White Gas" is "Pure" gas without Additives. "Coleman Fuel" and related are reformulated "White Gas" so can sell in retail stores under DOT rules and Fire Codes and store a long time. Gas/petrol from the pump to fill a vehicle has problems beyond being highly flammable. In many countries, years ago Pump Gas had "lead" (TEL) in it then later MTBE now banned too but still as other Additives than poison you when burned or just spill on whatever. Pump Diesel has similar problems using for other things beyond motor fuel too.

My grandpa used one of these every time we went camping. I was always surprised at how complicated the thing was, and they were always fiddling with it trying to get it to light. I was concerned to learn about the common use of radioactive materials though... I should find a dosimeter and see how radioactive the thing still is!

“And through the magic of buying two of them” - technology connections probably

It's an exceptionally achieved piece of engineering. Thanks for the video. Jorge G.Martinez, Santa Fe, Argentina

There's a lot of good information in this video. The commentary feels over dramatized to me. Lots of good information though.

Can we use gasoline instead of kerosene?😅

Good animation and explanation. Few companies are still selling the lanterns 😅

skill issue

It seems to me this could be modified into a water-piston Stirling cycle.

😮

HOW TO DODGE A BULLET -Starring steveo-johnny knoxville-butterbean

Batman dodges bullets everynight

This video skips the most interesting question about this principle: The tubes push as much water out as they suck in, so the net propulsion should be zero? The answer is in 2:02 in the book that he obviously didn't read :-)

it actually took less than 1 millisecond

dodge in advance before the gunner could register his aim. ez

If water constantly moves in and out, then how do the boat always moves ahead? Shouldn't it just go back and forth?

Всегда цельтесь в живот,цель никогда не сможет увернуться

It’s gonna hit.. oh damn we can’t tell the public or they will panic and stop working, riot and lose control.. let’s increase the distance to 100,000 miles then say there’s no chance all the while increasing the amount of attempts to send rockets to mars tenfold in the least 4 years. Suddenly Elon is speaking of colonising mars, billionaires building bunkers and nobody has considered it a slight coincidence all this is happening now while a huge rock heads towards us.. scares the hell out of me tbh.

Quasi star🤯

Hi. This is just a more complex version of the rattling lid of a boiling kettle as the steam builds up, lifts the lid, pressure drops, lid falls (rattles), then the cycle is repeated. Good work. Cheers, P.R.

He focuses on the resonant behavior, and although I think there are issues there, I note that it may puzzle some people why there's a net propulsive force in the forward direction. Why should there be if water both enters and exits the ends of the pipes? What make it unsymmetrical? The answer is that, with water exiting the pipe, it forms a jet in the rearward axial direction, and by Newton's first law, the jet momentum pushes back on the boat in the forward axial direction. (It's actually a bit more complicated, involving pressure forces, but pressure forces can be equated to change of momentum by Newton's second law.) When water enters the pipes, there's no jet but rather a uniform kind of inflow, which is called "irrotational flow" in the entrance region. This flow is distributed along all radial directions, and jetless. There's thus not much momentum directed only in the forward direction.

You only have explained the oscillations but nothing about how they create thrust

This video is very good

I do believe they started hearing loud cracks before it imploded and I'm not surprised the passengers fought to get the sub back to surface but that guy refused

If the chamber is flooded, it stops working. The chamber must be very hot when just a tiny bit (spray) of water enters and is immediately flashed to steam. That forces the water in the tubes backward at high speed. The steam then condenses and pulls a bit of water back into the chamber, but as soon as it hits the hot surfaces, it flashes and the cycle repeats. It's the difference between the outgoing water at high speed, and the incoming water at lower speed that moves the boat forward. MV1 is greater than MV2 where mass is roughly constant.

THe fluid going into the pipe comes from all around the dia. the fluid coming out is directed backwards. It is the difference between the suction and the pressure pulse that moves the boat.

If it is oscillating, why does boat move forward. During one half of the oscillating cycle it should move forward and during the other half it should move backward resulting in no net movement over a cycle. However, the boat is indeed moving in a given direction and is not just executing a cyclic motion.

The membrane is a moving part! It`s a spring.

Great animation! I suggest you merge it with some additional explanation regarding why a net propulsion effect is obtained. Nice explanation can, e.g., be found on en.m.wikipedia.org/wiki/Pop_pop_boat

Great explanation! So, oscillation is the key principle at play here.😄

This does not explain the core working principle at all! I believe the pipe part works as a cycle phase delayed heat storage. The oscillating water and steam in that part imparting it heat and cold. Together with the oscillating mass inertia.

Pop-Pop😁

Cooool

Good work

Latest Update: 'All good here' was the Titan sub's last message before it imploded.

No the bullet loses speed,AND STOPS

My science teacher made us wacth this

Hows this for a conspiracy theory?... it IS supposed to hit Earth and this mission to study it is actually the mission to deflect it and save humanity.

A pistol bullet doenst travel 1400km per hour

Whether you like it or not, it has to be possible to reduce the surface area of your body by staying in a pose that is perhaps easier to retract your body rather than staying open or zigzagging or training your body.

I believe that perhaps at a distance of 40 or 50 meters it is possible

I'd rather try and have a chance than stand around waiting for the gun flash is it possible maybe

point nemo is Caseohs bath

Most dumbest Shyt I’ve heard 👂

! READ NOW ! If you didn’t know that this will not actually happen because they have something going towards the big thang and it will make the big thang break into pieces so you don’t have to worry it’s not real people think it is but it is coming towards earth but they are going to make this gun to shot it and it will turn into pieces in 2029

Don’t you think that this is the time to 1.nuc the dam rock! 2. Approach the rock from behind attach some kind of high power rocket engines 3. Attach nuclear bombs to it no matter what and if it does come back around like it’s supposed to and hit us will have the ability to destroy it!