- published: 02 May 2016
- views: 799
Levitation (from Latin levitas "lightness") is the process by which an object is suspended by a physical force against gravity, in a stable position without solid physical contact. A number of different techniques have been developed to levitate matter, including the aerodynamic, magnetic, acoustic, electromagnetic, electrostatic, gas film, and optical levitation methods.
For levitation on Earth, first, a force is required directed vertically upwards and equal to the gravitational force, second, for any small displacement of the levitating object, a returning force should appear to stabilize it. The stable levitation can be naturally achieved by, for example, magnetic or aerodynamic forces.
Levitation techniques are useful tools in physics research. For example, levitation methods are useful for high-temperature melt property studies because they eliminate the problem of reaction with containers and allow deep undercooling of melts. The containerless conditions may be obtained by opposing gravity with a levitation force, or by allowing an entire experiment to freefall.
Stare at the light over me it's alright
And it's hanging
I wait for it to come down
Sound of my heart it's a lot beating faster
It's banging
I wait for it to slow down
Loud as I climb hear the voices behind
I keep climbing, oh I'm climbing
I'm not falling,
Levitate, give yourself away
We could be flying,
We might fly away
Levitate, give yourself away
We could be flying,
We might fly away, levitate
Fear in the air and I'm anxious and scared
But I'm rising
I think I'm gonna fall down
Moment to wait till I'm happy and safe
So I'm reaching, I think I need to come down
Burning down air in the way of it all
It's finding, I keep trying
This is flying, oh
Levitate, give yourself away
We could be flying,
We might fly away
Levitate, give yourself away
We could be flying,
We might fly away, levitate
Take me up, till I can't see the ground
Little people, look so small when I look down
Wanna go, so far away, out there in space
Floating away
Take me up, till I can't see the ground
Little people, look so small when I look down
Wanna go, so far away, out there in space
Floating away
Levitate, give yourself away
We could be flying,
We might fly away
Levitate, give yourself away
We could be flying,