posted on Jan, 25 2013 @ 08:40 PM
reply to post by poet1b
Well...we have used a wide variety of tests to calculate the Speed of Light over the years and you yourself could do this as all one needs is a very
good clock...LOL! Preferably Atomic. And a Laser.
There is a Reflective Mirror placed upon the Moon during the Apollo Missions and I believe it is still in use as a Laser Beam is sent from Earth to
this Reflector and the Beam reflects the Light back to Earth.
They put it on the Moon so that we could measure the distance of the Moon to the Earth at any given moment as the Moon obtains a maximum distance and
a minimum distance from Earth known as Apogee and Perigee respectively.
By using this Laser and Mirror NASA was able to determine not only the Moons distance at any given time but also learned that the Earth in the distant
future will loose it's Moon. The Moon is getting a bit further away each year and eventually will reach a point far enough away from Earth that
it's force of Orbit will be greater than the Effect of Gravity generated by Earth Mass...and thus our Moon will be lost.
Such calculations use the Speed of Light which can be determined by beaming light or a Laser at a specific distance at a Photon Detection Sensor and
timing the beam's travel of the distance using an Atomic Clock. Thus all you have to do then is take the time and multiply times the distance then
calculating the ratio of the distance to whatever form of measurement you desire...Miles, Kilometers...etc...and you get speed of light.
Radio Waves are also a good way to calculate the Speed of Light as Radio Waves are like Photons another common form of Energy on the Electromagnetic
Scale. So if you are 100 Miles away and you broadcast a signal and again use a Radio Detector or Sensor...Distance Times Time equals speed.
Electricity is a bit different as Electrons must be conducted by a Medium as Electricity will travel using the path of least resistance. So a
Lightning Bolt...although very fast...is a bit slower than the Speed of Light as it must conduct through the atmosphere and to the ground.