What time does it take for light to travel one foot?

Answer 1

According to Mavsman110. in the 'How much time does it take light to travel one foot?' post the answer was 1 nanosecond. Based on that you should be able to safely assume that "one nanosecond divided by 12 = you answer" so the answer is:

1/12 Of a nanosecond!

Answer 2

Light travels at an average speed of 186,000 miles per second (mps) and to be more exact, 186,282 mps. Light is the fastest thing in the universe that we now of. With this astonishing speed it could travel to the moon and back in 2.3 seconds! Know to the answer of this question. Light travels at 186,282 miles per second. You want how long it would take like light to travel in one foot. So you would have to convert 186,282 miles per second to feet per second. This would be 983,568,960 feet per second. Now if you want to now how long it would take light to travel one foot, you would take 1 and divide it by 983,568,960. This would then come out to 1.0167055-9 and without being in scientific notation, 0.0000000010167055 seconds. I don't know about you but that's a short amount of time! So every time you point a flashlight at your friend exactly one foot away from them just remember, it would take 0.000000000016067055 seconds for that light to reach them.

Answer 3

1000000000000000000000000000000 years i think that long

Answer 4

It takes one year to travel one year.

Answer 5

In 1972 I was confronted with this question. I was working as a young engineer at Bell Labs in Naperville, Illinois and was assigned to develop a machine that would communicate with Bell's own computer, the 1A processor, over a 30-foot cable. I recall I was having trouble establishing communication between the machine and the computer. For some reason, the computer was unable to sense the electronic signals transmitted by the machine.

And then it hit me; the problem was the electrical signals between the machines were moving at the speed of light over a 30-foot cable and were therefore delayed in reaching their destination. This delay was preventing synchronous communication.

Once I understood the problem, my next thought was: "How can I measure the delay caused by the finite speed of light (electromagnetic signals) over a 30-foot cable?" There was no internet back then, so I couldn't easily look up the answer. What I did was generate a repeating pulse at one end of the cable and then hooked up an oscilloscope to receive that pulse at the other end of the cable. The oscilloscope gave me a picture of the transmitted signal at the front end and the received signal at the back end. Low and behold, the separation of these signals was exactly 30 nanoseconds, that is 30 billionths of a second. I moved the cable around and the measurement of the delay held steady.

So, I measured the speed of light as one nanosecond per foot. This is consistent with scientific measurements and computations to date. I then adjusted the operational parameters of the computer to account for this 30 ns delay, and everything worked perfectly. I never told anyone this story because I was embarrassed that I had to find the answer myself and also had failed to compensate for the speed of light in the first place.

Later, I thought: "Cool, I just confirmed the famous Michelson/Morley experiment measuring the speed of light and by moving the cable, I even verified their conclusion that there is no either. They didn't use my method, but the answer was the same, as it should be.