Is vacuum and free space the same?

Originally Answered: How can one differentiate a vacuum from free space? They are essentially the same thing, free space is an absence of absolutely everything ie electromagnetic radiation, matter , EVERYTHING. This is also the definition of a true vacuum.

What does it mean when saying space is a vacuum?

When people say that space is a vacuum, they mean that the parts of space that are far away from planets, stars, etc. are nearly a vacuum. That means that the concentration of particles in those regions is very tiny compared to the concentration in our atmosphere.

Is space made of vacuum?

Outer space is not completely empty—it is a hard vacuum containing a low density of particles, predominantly a plasma of hydrogen and helium, as well as electromagnetic radiation, magnetic fields, neutrinos, dust, and cosmic rays.

Can u breathe in space?

Outer space is a vacuum. You cannot breathe in a vacuum because there’s literally no air to breathe, and if you tried, you’d be dead in about four minutes. Also, because space is extremely cold, your eyeballs could freeze solid, and even if you somehow survived, you’d be blind.

Is space truly a perfect vacuum?

A vacuum is an empty place, which space nearly achieves. Space is an almost perfect vacuum, full of cosmic voids. And in short, gravity is to blame. But to really understand the vacuum of our universe, we have to take a moment to understand what a vacuum really is – and what it’s not.

What does it mean that space is a vacuum?

A vacuum is a mere absence of matter. Space is a vacuum because in its large (LARGE LARGE LARGE) volume, whatever matter is there, collapses together under gravity to form clusters, galaxies, star systems as we know it. The remaining volume is mostly empty, and hence the vacuum.

How is a vacuum created in space?

It is a condition well below normal atmospheric pressure and is measured in units of pressure (the pascal). A vacuum can be created by removing air from a space using a vacuum pump or by reducing the pressure using a fast flow of fluid, as in Bernoulli’s principle.

What do they mean by space is a vacuum?

A: When people say that space is a vacuum, they mean that the parts of space that are far away from planets, stars, etc. are nearly a vacuum. That means that the concentration of particles in those regions is very tiny compared to the concentration in our atmosphere.

https://www.youtube.com/watch?v=37FLyA10Rv4