A true vacuum, which is difficult to create, is a space where thereis nothing. AN ordinary vacuum flask has "almost" a vacuum betweenits mirrored glass surfaces, but no matter… how long the vacuum pumpis trying to remove air from inside the glass walls there willalways be some left. By Willyrhus (MORE)
In general, matter is anything that has mass and occupies space . That is a simplistic definition,but it is a great place to start in understanding the world aroundyou. … Here are some other suggestions from our community: .
The "stuff" in the world can be roughly divided into "matter"and "energy" for starters, and you can begin investigating matterright there. Matter, which has mass, exhibits gravimetricproperties; it "dents" or "warps" spacetime in proportion to itsmass. .
Matter is everything around you. .
Matter is anything made of atoms and molecules. .
Matter is anything that has a '''mass, weight, volume, or takesup space. .
In addition, it is everything and anything that is not time,energy, or space. Matter makes up everything from the mountains tothe oceans to your fingernail and brain. The only things that arenot matter are these: space is what matter exists in, like the areabetween two walls to put it simply, and example of energy would belight or heat and time is an invention of man to track things thathappen in space. .
Matter is a solid form of energy as expressed in Einstein'sequation E=MC2. (MORE)
I dont know. Ive been thinking about this deep philosophicalquestion for some time now. I wish i had an answer for you, butuntil i am more knowledgable on the subject matter, …I will continueto ask myself this. I hope to become enlightened soon. Good luck onyour journey, signed: Phellow Philosopher (MORE)