something that cleans ur room
an absence of matter
an absence of matter
vacío -> the scientific term meaning a place devoid of matter. aspiradora -> vacuum cleaner
Sound cannot travel through a vacuum, scientific or any other kind
vacuum or void
Busch vacuum pumps can be purchased en eBay or at York Scientific. The Busch R5-400 Evan vacuum pump 15HP is currently selling on eBay for $3,995.00.
Something that has no air. Like the vacuum you have in your closet. It sucks air in because it is trying to fill the empty cavity that it has inside is. Space is a vacuum because their is no air in Space. If you take your helmet off in Space you will die instantly because you have air and the vacuum around you is MUCH MORE POWERFUL!
A vacuum.
Perhaps "complete vacuum" or "hard vacuum" or the "vacuum of deep space" will suffice. Even in the vast "nothingness" between galaxies there is going to be an atom or two of hydrogen floating about. That's about as good as it gets. But if a state of complete emptiness is desired, a "perfect vacuum" is what the seeker may be looking for.
The space in between particles would be technically classified as a vacuum.
Heat energy, like light energy, can be reflected by some materials. ~MVMMS
Vacuum tubes were used back in the 19th century and mid-20th century for a number of things. At first they were used just in scientific areas, but then they were used as electronic amplifiers. They were eventually used in the first computers.