its known that all atoms and molecules has a cotinual motion.how ?

Question

how atoms in a desck for example move in a continual motion , while i cannot see the desck shakes or deforms. so, if u can help please answer me...

Answer 1

You have to put things in the proper scale.

When we talk about atoms or molecules, we usually use the angstrom as a unit of measurement. An angstrom is a billionth of a billionth of a meter. Really, really, REALLY small.

Just to try and provide a scale comparison here... the difference between the atomic scale and the scale you live in is like the difference between the circumference of the thinnest hair on your head and the Earth's equator.

If you can imagine how your hair can move around and not have someone looking at the whole planet see it, then you can imagine how an atom can move around and you wouldn't be able to see it. In fact, when you take that scale into account, it's easy to see how those atoms and molecules could move around A LOT and still be completely imperceptible to us. We're just too big.

Hope that helps!

Answer 2

The motion in solid objects is much less than in liquids and even less in gases (air). Any motion is so slight as to be indetectable by your eye or hand. At best the motion would only involve the electron particles of an atom, not the atoms or molecules made up of the atoms.

Answer 3

The degree of that motion is in nanometres or less, and your (our) eyes are not sensitive enough to see such motion. In fact, there is a lot of empty space in the so called solid desk!