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Helium in sentence

102 examples of Helium in a sentence

And now simple atoms appear of hydrogen and helium.
It consisted of huge clouds of hydrogen and helium atoms, and they have no structure.
So where you get slightly denser areas, gravity starts compacting clouds of hydrogen and helium atoms.
For instance, here they are laying down the balloon fabric behind, which is eventually going to be filled up with helium.
Those two trucks you see at the very end carry 12 tanks each of compressed helium.
Here's the balloon being filled up with helium, and you can see it's a gorgeous sight.
So the balloon is being filled up with helium on the left-hand side, and the fabric actually runs all the way to the middle where there's a piece of electronics and explosives being connected to a parachute, and then the parachute is then connected to the payload.
In the 1950s, people were trying to figure out how superfluid helium worked.
The only way it worked is when the helium atoms were very, very far apart.
And unfortunately, the helium atoms in liquid helium are right on top of each other.
Feynman decided, as a sort of amateur helium physicist, that he would try to figure it out.
The first one was that when helium atoms touch each other, they repel.
The implication of that is that the wave function has to go to zero, it has to vanish when the helium atoms touch each other.
The thing was, that simple thing that he wrote down explained everything that was known at the time about liquid helium, and then some.
It uses gas, so supercritical CO2 or helium, and that goes into a turbine, and this is called the Brayton cycle.
So we made it very small, so things were about 30 nanometers in size; making it very cold, so at liquid helium temperatures; and changing environment by changing the voltage, and the electrons could make flow around a loop one at a time, on and off, a little memory node.
So you take two small nuclei, you put it together, and you make helium, and that's very nice.
That's a helium truck in the background.
That's where the helium is.
The particles fuse together, and the Sun turns hydrogen into helium through quantum tunneling.
Hydrogen has one proton, helium, two protons, lithium, three protons, and so on.
It was about 75 percent hydrogen and almost all the rest was helium.
Hydrogen atoms smash together to form helium, accompanied by a great release of energy, strong enough to counteract the shrinking force of the gravity.
Over its lifetime, the fusion reactions in the core of a massive star will produce not only helium, but also carbon, oxygen, nitrogen and all the other elements in the periodic table up to iron.
Gas clouds, now containing many elements besides the original hydrogen and helium, have higher density areas that attract more matter, and so on.
It's still mostly hydrogen at 71 percent, with most of the rest being helium at 27 percent.
But bear in mind that while the first stars were made up of hydrogen and helium alone, the remaining elements in the periodic table make up two percent of the sun.
Small planets like ours don't have enough gravity to hold on to much hydrogen or helium gas since both of those are very light.
Think about this: with the exception of hydrogen and some helium, the ground you walk on, the air you breath, you, everything is made of atoms that were created inside stars.
Over many millions of years, fusion transforms hydrogen into heavier elements: helium, carbon, and oxygen, burning subsequent elements faster and faster to reach iron and nickel.
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