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Explain why cant sound travel through vacuums?
there is no air in a vaccum. and sound needs air for the sound waves to travel through.
Why cant sound travel through outer space?
Sounds requires a medium to travel through. An example is air. You've also heard sound travel through water and solid objects like wood. In the past it was often thought that no medium exists in space. However, in current astronomy and astrophysics it is thought that dark matter is the medium by which sound can and does travel about space. Due to the atoms being so spread out though, the human ear would not be capable of detecting the sound waves. For more information check out: http://www.space.com/scienceastronomy/mystery_monday_030922.html
How long is a jiffy in the measurement of time?
A jiffy is the time it takes for light to travle 1centominer or about 33.3 pictoseconds in time.
Why does sound not travel through space?
Sound does move through space. It doesn't move though empty space, i.e. a vaccuum. In outer space there is a vaccuum (though not necessarily a perfect vaccuum).Sound is caused by vibrations in a medium such as air (or water or wood). These vibrations compress and rarefy the medium. The vibrations move through the medium as waves.In a vaccuum, there is no medium thus there is no sound.
How does light travel from one point to another?
In straight lines (well, "geodesic" might be a better term), and at the speed of light in the medium they're in.
