Speed of Light

It tells you that the speed of light is greater than the speed of sound.in the environment that Jan was in

The speed of light is absolute, so you begin there. You know the distance between the Earth and the sun (from celestial mechanics originally), so now you have a general idea of how long it takes for light from such an object to get to to your eyes.

Now you've spotted an object - a star, or distant galaxy, let's say - and ask how far away it is. You compare its light to that of objects (like the sun) that you know. A little math tells you that what you're seeing happened there a billion years ago.

Velocity of light in free space = 299,792,458. meters per second (rounded). 1 meter = 3.28084 ft (rounded) 299,792,458 meters per second = (299,792,458 x 3.28084) =983,571,087.9 ft per sec (rounded)

Artificial light is generated by human-made sources such as light bulbs and fluorescent lamps, while natural light comes from the sun. Natural light provides a fuller spectrum of colors and is often preferred for its health benefits, while artificial light can be controlled for intensity and color temperature to suit various needs.

Cyan light results. Green and blue and red lights are all primary colors of light. Because red is not part of cyan light, cyan and red light are complementary colors.

Electromagnetic radiation, such as visible light or gamma rays, travels at the speed of light, which is approximately 300,000 kilometers per second in a vacuum. This energy is characterized by its wave-like behavior and carries energy in the form of photons.

In polar regions, ions radiate energy that creates shimmering lights called auroras. These auroras are a natural phenomenon caused by interactions between charged particles from the sun and the Earth's atmosphere. The lights can appear in different colors such as green, red, or purple, depending on the type of particles involved.

No. It would take significantly longer. A pressure wave would not move through the rod at the speed of light.

According to the internet, the speed of sound in steel is 4512m/s. I'm not sure if a pressure wave would move through the rod at the the same speed as sound, but assuming that they're on a similar order of magnitude, it would take something like 60,000 years for the guy on the other end of the rod to feel it.

Obtain a bell jar with a valve at the top, place the bell jar on a smooth flat surface. connect the valve to a vacuum pump through a rigid hose. Place a manual wind up spring alarm clock under the bell jar. Seal the bottom lip of the bell jar with petroleum jelly and ensure there are no gaps between the bell jar and the surface. Note the ticking of the clock. Start the vacuum pump and observe when the internal pressure begins to drop. Stop the vacuum pump and close the valve. Listen to the clocks ticking. Re start the vacuum pump and note the pressure drop, close the valve and listen to the ticking clock. As the pressure decreases the sounds of the clock will get fainter and fainter because there is less of the material medium (Air) to transfer the sound.

when the particle moves with the speed of light,the mass of the particle increases to infinity.... this is as per Einstein's theory of relativity....n its true.... some people say the mass decreases to zero when the particle travels with the speed of light....they are "INSANE"

The particle that is light is called the Photon. The photon is massless and can travel faster than any other particle because it has no mass. Any particle that has mass will require infinite energy to reach the velocity of light, which is impossible because the particle will have infinite mass in the process (Remember E=mc^2).

The sharpness of a shadow is reduced by two source: diffraction of light around the body and secondary light sources. Diffraction is a physical phenomenon, so unless you make something without edges (hence no shadow) you're not gonna get rid of that. So try to pick a very dark area where the only light source is from what is making the shadow. Eliminate reflected light from that light source. And I would say try to get the light rays as close to parallel as possible. This means be far from the light source. Ideal situation:

I shaft of light from the sun penetrates through a skylight in the ground (say the roof of a building that has all of it's windows painted over). Put an object in that shaft of light (inside the building) and the shadow should be as sharp as you're ever gonna get it. Parallel light, no reflected light sources--that's about it.

All regions of the electromagnetic spectrum travel at the speed of light in a vacuum, which is approximately 299,792 kilometers per second. So, they all travel at the same speed, regardless of their wavelength or frequency.

No, you can't it's impossible. No matter can go at the speed of light.

The distance a beam of light would travel in 7500 seconds can be calculated by multiplying the speed of light by the time traveled: 3.00 x 10^8 m/s * 7500 s = 2.25 x 10^12 meters. The beam of light would travel 2.25 trillion meters in 7500 seconds.

When light enters a glass block, some of it is reflected back, some is transmitted through the glass, and some is absorbed by the glass and converted into heat. The amount that is reflected, transmitted, and absorbed depends on the angle of incidence and the properties of the glass block.

6.04*102 light years

As you mention light speed is constant.

Light speed equals to its wavelength times its frequency.

c = lambda * freq

As the light source travels toward the observer, in such high speeds comparable to the light speed relative to the observer, the later emitted light waves pile up behind the earlier emitted light waves as they all travel together toward the observer, causing a visible shift (higher) in the frequency of the received waves as seen by the observer.

A pressductor is a pressure-sensitive resistor or sensor used to measure pressure in industrial applications. It can convert changes in pressure into electrical signals that can be monitored or used for control purposes in various systems.

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That would depend on the medium which the light is traveling through.

A fraction of the speed of light can range from 0 to just under 1. For example, half the speed of light would be 0.5c, a quarter would be 0.25c, and so on. The speed of light in a vacuum is approximately 299,792 kilometers per second.

the energy needed to slow atoms down increases towards infinity the closer you approach the lower cosmic speed limit, 0 km/s > 0 atomic movement is absolute zero

the energy needed to speed up atoms increases towards infinity the closer you approach the upper cosmic speed limit, 300 000 km/s > is the speed of light

Both are unattainable. Perhaps an expert in physics can step in here. I guess the connection if there is one should be found in what determines those limits. I am guessing it has something to do with the uncertainty principle, the curvature of space time and the total energy of our universe. Why? Wet finger technique, pure speculative guess work. That's what my intuition tells me but unfortunately human intuition doesn't really seem to work an awful lot when trying to figure out how the universe works. ^^

Don't take this answer too serious. I am not a physicist and it probably shows :p