Difference between revisions of "Manuals/calci/SPEEDOFLIGHT"
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<div style="font-size:30px">'''SPEEDOFLIGHT (Units)'''</div><br/> | <div style="font-size:30px">'''SPEEDOFLIGHT (Units)'''</div><br/> | ||
*<math>Units</math> Units to be display. | *<math>Units</math> Units to be display. | ||
| + | **SPEEDOFLIGHT(), returns the speed of light per year. | ||
==Description== | ==Description== | ||
*This function shows the value of speed of light. | *This function shows the value of speed of light. | ||
*The speed of light value is <math>29979245800 m s^{-1}</math>. | *The speed of light value is <math>29979245800 m s^{-1}</math>. | ||
| − | *The approximate value is approximately <math>3. | + | *The approximate value is approximately <math> 3.00*108 \frac {m}{s}</math>. |
*It is exact because the unit of length, the meter, is defined from this constant and the international standard for time. | *It is exact because the unit of length, the meter, is defined from this constant and the international standard for time. | ||
*Speed of light is the distance of light which can travel in a unit of time through a given substance. | *Speed of light is the distance of light which can travel in a unit of time through a given substance. | ||
| Line 14: | Line 15: | ||
*Light from the sun takes about eight minutes to reach the Earth. | *Light from the sun takes about eight minutes to reach the Earth. | ||
*Speed of light is mainly used in Einstein's formula <math>E=mc^2</math>. | *Speed of light is mainly used in Einstein's formula <math>E=mc^2</math>. | ||
| + | |||
| + | ==Examples== | ||
| + | # SPEEDOFLIGHT("cm") = 29979245800 cm s-1. | ||
| + | # SPEEDOFLIGHT("mm") = 299792458000 mm s-1. | ||
| + | # SPEEDOFLIGHT("km") = 299792.458 km s-1. | ||
| + | |||
| + | ==Related Videos== | ||
| + | |||
| + | {{#ev:youtube|v=hu4bl4CTyS4|280|center|Speed of Light}} | ||
| + | |||
| + | ==See Also== | ||
| + | *[[Manuals/calci/ACCELERATIONDUETOGRAVITY | ACCELERATIONDUETOGRAVITY ]] | ||
| + | *[[Manuals/calci/DISTANCE | DISTANCE ]] | ||
| + | |||
| + | ==References== | ||
| + | *[https://en.wikipedia.org/wiki/Speed_of_light Speed of Light] | ||
| + | |||
| + | |||
| + | *[[Z_API_Functions | List of Main Z Functions]] | ||
| + | |||
| + | *[[ Z3 | Z3 home ]] | ||
Latest revision as of 13:20, 9 May 2019
SPEEDOFLIGHT (Units)
- Units to be display.
- SPEEDOFLIGHT(), returns the speed of light per year.
Units to be display.
Description
- This function shows the value of speed of light.
- The speed of light value is .
- The approximate value is approximately .
- It is exact because the unit of length, the meter, is defined from this constant and the international standard for time.
- Speed of light is the distance of light which can travel in a unit of time through a given substance.
- Speed of light in vacuum is denoted by c.
- The speed at which light propagates through transparent materials, such as glass or air, is less than c.
- Similarly, the speed of radio waves in wire cables is slower than c.
- A light year, or the distance light can travel in a year, is over five trillion miles.
- Light from the sun takes about eight minutes to reach the Earth.
- Speed of light is mainly used in Einstein's formula .
.
.
.Examples
- SPEEDOFLIGHT("cm") = 29979245800 cm s-1.
- SPEEDOFLIGHT("mm") = 299792458000 mm s-1.
- SPEEDOFLIGHT("km") = 299792.458 km s-1.
Related Videos
See Also
References