Speed of light - Revision history

Michel Lamontagne at 15:19, 27 October 2020

2020-10-27T15:19:00Z

Jburk at 23:51, 17 December 2018

2018-12-17T23:51:31Z

Farred: Undo revision 7306 by 146.145.140.250 (Talk) remove off topic edit

2012-07-25T12:36:46Z

Undo revision 7306 by 146.145.140.250 (Talk) remove off topic edit

146.145.140.250: /* Communication */

2012-07-24T05:46:16Z

Communication

Spriditis: Undo revision 6168 by 92.243.26.52 (Talk) vandalism

2011-12-15T00:42:14Z

Undo revision 6168 by 92.243.26.52 (Talk) vandalism

92.243.26.52: /* Consequences of the Speed of Light */

2011-12-14T20:38:38Z

Consequences of the Speed of Light

Spriditis: /* Communication */ added note about sun blocking communications; removed inapplicable precision

2010-03-11T05:56:27Z

Communication: added note about sun blocking communications; removed inapplicable precision

87.226.36.122: /* Communication */

2010-01-20T03:28:09Z

Communication

Laertes: Added effect on communication

2008-12-26T21:54:59Z

Added effect on communication

Ioneill at 19:51, 2 December 2007

2007-12-02T19:51:09Z

@@ Line 6: / Line 6: @@
 Meters per second:
 :<math>c = 3 \times 10^{8} \mathrm{ms^{-1}}</math>
 Kilometers per second:
 :<math>c = 3 \times 10^{5} \mathrm{kms^{-1}}</math>
 Miles per second:
 :<math>c = 1.9 \times 10^{5} \mathrm{mis^{-1}}</math>
@@ Line 17: / Line 20: @@
 ===Communication===
-[[Humans]] have discovered methods to communicate over great distances using electromagnetic (EM) radiation, such as radio waves and lasers. On Earth, distances are short enough that these methods seem instantaneous. On [[Mars]] and other parts of the [[solar system]], communication with Earth involves a time delay, based on the time it takes the EM radiation to travel. The delay between Earth and Mars varies from 3 minutes to 22 minutes (between about 180 to 1340 seconds depending on the postition of planets and resulting distance). For two way comunication (request - answer) time is doubled.
+[[Humans]] have discovered methods to communicate over great distances using electromagnetic (EM) radiation, such as radio waves and lasers. On Earth, distances are short enough that these methods seem instantaneous. On [[Mars]] and other parts of the [[solar system]], communication with Earth involves a time delay, based on the time it takes the EM radiation to travel. The delay between Earth and Mars varies from 3 minutes to 22 minutes (between about 180 to 1340 seconds depending on the position of planets and resulting distance). For two way communication (request - answer) time is doubled.
-To provide uninterupted communications, a group of communication sattelites will be necessary (placed in the orbit around the sun) - due different orbital speeds of both planets, for a period of time sun will be possitioned directly between both planets, blocking dirrect communications.
+To provide uninterrupted communications, a group of communication satellites will be necessary (placed in the orbit around the sun) - due different orbital speeds of both planets, for a period of time sun will be positioned directly between both planets, blocking direct communications.
 ==See also==
 * [http://en.wikipedia.org/wiki/Speed_of_light The speed of light on Wikipedia]
 [[category:Communications]]

← Older revision		Revision as of 23:51, 17 December 2018
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	* [http://en.wikipedia.org/wiki/Speed_of_light The speed of light on Wikipedia]		* [http://en.wikipedia.org/wiki/Speed_of_light The speed of light on Wikipedia]

−	[[category:~~Physics~~]]	+	[[category:Communications]]

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 ==Consequences of the Speed of Light==
-You are going to have to sacrifice scale on some level.Either you will have an etmerxely huge sun, or a miniscule Mercury.You will also have quite a problem wiht the distance scale   Here are the scales:Distances (in AU)Sun = 0Mercury = 0.39Venus = 0.72Earth = 1.00Mars = 1.52Jupiter = 5.20Saturn = 9.58Uranus = 19.23Neptune = 30.04Sizes (earth idameter)Me = 0.382V = 0.949E = 1.000Ma = 0.532J= 11.209S= 9.449U = 4.007N = 3.883So, you will need candy that will vary in size from 4/10 (in diameter) the size of whatever you use as the earth, to 11x larger.If you used an M&M for earth, picture putting 11 of them side by side   for the equivalent of Jupiter   and then think about cutting that M&M in half (actually a little less, closer to 1/3) for the size of Mercury.
+===Communication===
 ==See also==

@@ Line 16: / Line 16: @@
 ==Consequences of the Speed of Light==
-===Communication===
+You are going to have to sacrifice scale on some level.Either you will have an etmerxely huge sun, or a miniscule Mercury.You will also have quite a problem wiht the distance scale   Here are the scales:Distances (in AU)Sun = 0Mercury = 0.39Venus = 0.72Earth = 1.00Mars = 1.52Jupiter = 5.20Saturn = 9.58Uranus = 19.23Neptune = 30.04Sizes (earth idameter)Me = 0.382V = 0.949E = 1.000Ma = 0.532J= 11.209S= 9.449U = 4.007N = 3.883So, you will need candy that will vary in size from 4/10 (in diameter) the size of whatever you use as the earth, to 11x larger.If you used an M&M for earth, picture putting 11 of them side by side   for the equivalent of Jupiter   and then think about cutting that M&M in half (actually a little less, closer to 1/3) for the size of Mercury.
 ==See also==

@@ Line 14: / Line 14: @@
 :<math>c = 1.9 \times 10^{5} \mathrm{mis^{-1}}</math>
-If I commuincated I could thank you enough for this, I'd be lying.
+==Consequences of the Speed of Light==
 ==See also==

@@ Line 17: / Line 17: @@
 ===Communication===
-[[Humans]] have discovered methods to communicate over great distances using electromagnetic (EM) radiation, such as radio waves and lasers. On Earth, distances are short enough that these methods seem instantaneous. On [[Mars]] and other parts of the [[solar system]], communication with Earth involves a time delay, based on the time it takes the EM radiation to travel. The delay between Earth and Mars varies from 3 minutes to 22 minutes.
+[[Humans]] have discovered methods to communicate over great distances using electromagnetic (EM) radiation, such as radio waves and lasers. On Earth, distances are short enough that these methods seem instantaneous. On [[Mars]] and other parts of the [[solar system]], communication with Earth involves a time delay, based on the time it takes the EM radiation to travel. The delay between Earth and Mars varies from 3 minutes to 22 minutes (between 182.13 to 1337.59 seconds depending on the postition of planets and resulting distance).
 ==See also==

@@ Line 1: / Line 1: @@
 ==Definition==
-The '''Speed of Light''' (or '''''c''''') is the speed at which a photon (an "energy packet" of electromagnetic radiation) travels in a vacuum.
+The '''Speed of Light''' (or '''''c''''') is the speed at which a [[photon]] (an "energy packet" of electromagnetic [[radiation]]) travels in a [[vacuum]].
 ===Values===
@@ Line 14: / Line 14: @@
 :<math>c = 1.9 \times 10^{5} \mathrm{mis^{-1}}</math>
 ==See also==