I have heard from an illegitimate source that there is no such thing as a true vacuum. I just want to confirm this statement true/false and why so if it is true. Thanks.
Mentallic said:I have heard from an illegitimate source that there is no such thing as a true vacuum. I just want to confirm this statement true/false and why so if it is true. Thanks.
This is what I was looking for. Ok so it's not possible, even for the materials with the highest Boiling Points to stay in a solid state with such low pressures? If space is nearly a vacuum then, why aren't the meteors etc. subliminating? (or are they? comets throw vast gaseous tails behind them).Mapes said:It really is impossible in practice, at least over long time scales. All materials have a vapor pressure; that is, atoms detach all the time. (The vapor pressure increases exponentially with temperature; if it reaches atmospheric pressure, the solid will sublimate to gas even in a closed container.)
Actually I wasn't completely sure about what pure vacuum meant either. I'm thinking of a macroscopic volume of space - such as in a container - being completely emptied of atoms, and possibly energy too.Andy Resnick said:There needs to be some additional context to understand what is meant by 'true vacuum'. Torricelli really irked the Pope in the 17th century with his column, and some cosmological models claim the universe is in a false vacuum state.
Those two uses of the term 'vacuum' are tenuously connected- can you provide additional context?
A true vacuum is a space devoid of all matter and energy. It is a theoretical concept that does not exist in the physical world.
The idea of a true vacuum is not supported by scientific evidence and is considered a pseudoscience. It goes against well-established principles in physics and has not been observed or proven to exist.
No, a true vacuum cannot be created. Even in the most empty and isolated spaces in the universe, there is still some form of matter or energy present.
Outer space is often referred to as a vacuum, but it is not a true vacuum. It still contains some particles, such as atoms, molecules, and radiation, although they may be very sparse. A true vacuum would have absolutely nothing present.
Some individuals may believe in the concept of a true vacuum because it has been romanticized in popular culture and has been used in science fiction stories. However, there is no scientific basis for its existence.