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Slightly less than 186,000 miles per second, or 300,000 kilometres per second. Light doesn't really slow much in air or gas, it is slowed by glass.
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∙ 14y ago
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A colourless gas in trace amounts of air?
Helium is a light colourless gas that does not burn
How fast is the speed of Light in a gas?
The only general answer that's true in all cases is: Slower than in vacuum. The exact speed depends on which gas, and the density of the gas, which in turn depends on its temperature and pressure.
Light incident upon a pane of glass shows down in passing through the glass. Does it emerge at a slower speed or at its initial speed?
The speed of light depends on the electrical characteristics of whatever medium it happens to be in at that instant. It has one speed in vacuum, another speed in air, another in glass, another in water, and yet another speed in jello. When passing from a more-optically-dense medium to one where its speed is higher, it doesn't need a stomp on the gas to 'accelerate' to the higher speed.
Does the pressure of a gas affect the speed of sound?
The speed of sound in a gas does not depend on pressure.See related links.There are limits to the validity of this statement because it is valid for gasses that behave as "ideal" gasses. Thus, when near a pressure and temperature that is close to the point that the gas will condense into a liquid, this statement fails. For air, at all the temperatures which we experience, the speed of sound in air is independent of pressure.
Does light travel fastest through a solid or air?
Light travels faster through a gas. In general, as the density of a material increases the velocity which light will travel through it decreases.
What happens to the speed of light when air changes to gas?
I'm afraid nothing happens to the speed of light ever. Also "air" is consider'd a gas.
How can the speed of a light wave be changed?
If you shine light through a different medium, its speed will change. It's faster in a vacuum than in air, which is faster than in a denser gas, etc.
What path is light wave from air to gas?
Air is a gas.
At what velcity does light travel trought a gas?
It varies, depending on the gas, and on the properties of the gas (mainly temperature and pressure). But under "normal" circumstances, the speed of light in a gas is almost the same as the speed of light in a vacuum.
What happens when light passes from air into gas?
Air is a gas silly ;)
Does gas effect the speed of light?
Yes it does
is the rainbow gas?
its heat water and light and air no gas
How fast does light travel in a gas and why?
The speed will depend on the type of gas and on its density.
How fast does light travel in a gas?
The speed is relative to the gas and its density. It depends what kind of gas you're talking about. At 0 °C and 1 ATM pressure: Light travels at 299704644.53915 metres per second through air. Light has been slowed to down to 38 mph when passed through chilled sodium gas. Light has even been stopped to a halt.
Why is the statement the speed of light is 300 milllon miles per sec not always correct?
The speed of light, which is about 300,000,000 m/s, can be affected by the material that it is travelling through. Mediums such as air, glass, and water can slow light down. For example, in water, light travels at a speed of about 200,249,000m/s; in ammonia gas, it travels at 221,200,000m/s; and in ethanol, it travels 220,400,000m/s.
An air-fluid level in radiology is?
a line representing the level of a collection of fluid seen in profile with air or gas above it.
What can fill a room but take up no space?
sound . smell. light
