If you've ever seen a hot air balloon, you've seen this law in action.

Hot air rises.

In recent times many aviation endurance records have been achieved by hybrid balloon designs such as the Rozière Balloon which combine the altitude control of hot air balloons with the permanent buoyancy of lifting gases.

And, I mean, first of all we nobody had actually crossed the Atlantic in a hot air balloon before, so we had to build a hot air balloon that was capable of flying in the jet stream, and we weren't quite sure, when a balloon actually got into the jet stream, whether it would actually survive the 200, 220 miles an hour winds that you can find up there.

like air is being let out of a balloon.

And just like a balloon with the last bit of air, just right out of the balloon,

McCain, Obama, and Hot Air

Hot summer air mixed with cold air from the north.

Yes but the air is hot.

The first hot air balloon in Finland (and in the whole Swedish kingdom) was made in Oulu (Uleåborg) in 1784, only a year after it was invented in France.

So you can think of it as... if I blew air into a balloon, you could squeeze that balloon a little bit.

Instead of blowing the balloon up like a party balloon, they use a giant flame to heat the air inside that envelope.

It means it gets filled with hot air.

Save the hot air for your other end!

Hot air rises, and air is drawn in off the sea to replace it.

Another type of engine is the hot air engine.

Okay, release the balloon, release the balloon, release the balloon.

As the air is heated up, the balloon begins to inflate as the gas volume increases.

Much of the Enlightenment occurred in French intellectual circles, and major scientific breakthroughs and inventions, such as the discovery of oxygen (1778) and the first hot air balloon carrying passengers (1783), were achieved by French scientists.

His lips are always moving, but he's just hot air inside.

Radio Okay, release the balloon, release the balloon, release the balloon.

So that's the balloon, big gas balloon.

It's the internal air pressure of the helium, or your own exhales that you put into the balloon.

And just like a balloon with the last bit of air, just, just right out of the balloon, I just felt my energy lift and just I felt my spirit surrender.

Blue Balloon

Not only that, because you have this convection, you have this rising of the air where it's hot, air is drawn in.

Hot humid air rose up to create several thunderstorms around an area of low pressure.

The unit heats air at the bottom, reducing its relative humidity, and the natural tendency of hot air to rise brings this low humidity air into contact with the clothes.

My balloon popped!

My brother wanted a red balloon, and I wanted a pink balloon.

Another intuition if I have a balloon, what blows up a balloon?

The Al Gore book, Our Choice and the David McKay book, Sustainable Energy Without the Hot Air.

They make balloon animals.

Born in a balloon?

Give me my balloon!

The UK air delivered cluster bomb, the RBL755, contains 147 bomblets ejected from the casing by hot gasbags.

The earth's pull is what makes hot air rise, and this convection shapes flames into their familiar form.

How would it be possible that spectators sit, enjoy themselves in open air stadia in this hot environment?

Tom blew up the balloon.

Show balloon when transfer completes

Do you see the balloon?

He really popped their balloon.

Because hot air rises, ceiling fans may be used to keep a room warmer in the winter by circulating the warm stratified air from the ceiling to the floor.

The signal travels through the balloon network from balloon to balloon, then to a ground based station connected to an Internet service provider (ISP), then onto the global Internet.

Too hot, too hot.