Off topic discourse and banter encouraged.
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neufer
- Vacationer at Tralfamadore
- Posts: 18805
- Joined: Mon Jan 21, 2008 1:57 pm
- Location: Alexandria, Virginia
Post
by neufer » Sat Sep 21, 2013 5:45 pm
wonderboy wrote:
"I'm so fast that last night I turned off the light switch in my hotel room
and was in bed before the room was dark"
Muhammad Ali, faster than the speed of light?
Negrescence due to the cooling of an incandescent light bulb takes about a tenth of a second.
Assuming the switch is ~3m away Ali must move ~30 m/s or ~10
-7 the speed of light.
http://dx.doi.org/10.1063/1.1710410 wrote:
Time Constants of Incandescent Lamps
J. Appl. Phys. 9, 209 (1938)
W. E. Forsythe, M. A. Easley, and D. D. Hinman
Incandescent Lamp Department, General Electric Company, Nela Park, Cleveland, Ohio
<<Candescence and nigrescence curves are shown for a number of tungsten lamps, vacuum and gas‐filled, ranging in size from the automobile lamps up to the 30‐volt, 30‐ampere lamp and the 1000‐watt photoflood lamp. Data are given for similar filaments mounted in vacuum lamps and in lamps filled with argon, nitrogen, hydrogen, and helium. The filament of a vacuum lamp reaches 90 percent brightness on heating in time t=0.060I; 10 percent brightness on cooling in time t=0.022I; for gas‐filled lamps, t=0.15I and t=0.070I, respectively. (I is the normal operating current of the lamp.)>>
Art Neuendorffer
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geckzilla
- Ocular Digitator
- Posts: 9180
- Joined: Wed Sep 12, 2007 12:42 pm
- Location: Modesto, CA
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Contact:
Post
by geckzilla » Sat Sep 21, 2013 6:29 pm
I'd rather imagine him approaching relativistic speeds and destroying his neighborhood in the process of getting in bed.
Just call me "geck" because "zilla" is like a last name.
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Ann
- 4725 Å
- Posts: 13855
- Joined: Sat May 29, 2010 5:33 am
Post
by Ann » Sat Sep 21, 2013 6:52 pm
neufer wrote:wonderboy wrote:
"I'm so fast that last night I turned off the light switch in my hotel room
and was in bed before the room was dark"
Muhammad Ali, faster than the speed of light?
Negrescence due to the cooling of an incandescent light bulb takes about a tenth of a second.
Assuming the switch is ~3m away Ali must move ~30 m/s or ~10
-7 the speed of light.
Two guys are waiting for someone in a dark alley.
First guy: Man, it's dark here!
Second guy: Yup, there's been no light here for a long time.
First guy: How d'ya know?
Second guy: It's so dark.
Ann
Color Commentator
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neufer
- Vacationer at Tralfamadore
- Posts: 18805
- Joined: Mon Jan 21, 2008 1:57 pm
- Location: Alexandria, Virginia
Post
by neufer » Sat Sep 21, 2013 7:24 pm
geckzilla wrote:
I'd rather imagine him approaching relativistic speeds and destroying his neighborhood in the process of getting in bed.
"Float like a
Butterfly Nebula, sting like a
Beehive Cluster."
Art Neuendorffer
