http://cutslist.com/what-is-the-temperature-of-a-flashlight-bulb-filament-when-turned-on/ Mon, 22 Mar 2010 21:29:47 +0000 http://wordpress.org/?v=2.9.1 hourly 1 http://cutslist.com/what-is-the-temperature-of-a-flashlight-bulb-filament-when-turned-on/comment-page-1/#comment-31954 Kes Sun, 22 Nov 2009 09:42:50 +0000 http://cutslist.com/what-is-the-temperature-of-a-flashlight-bulb-filament-when-turned-on/#comment-31954 I would try this. Calculate rated resistance using E = IR (solve for R). Assume that the increase in resistance for tungsten is linear (in the range of interest). Form a ratio of room temperature resistance / room temperature in degrees Kelvin (use absolute temperature) = rated resistance / unknown temperature x. Convert x to degrees C. Good luck. I would try this. Calculate rated resistance using E = IR (solve for R). Assume that the increase in resistance for tungsten is linear (in the range of interest). Form a ratio of room temperature resistance / room temperature in degrees Kelvin (use absolute temperature) = rated resistance / unknown temperature x. Convert x to degrees C. Good luck.

]]> http://cutslist.com/what-is-the-temperature-of-a-flashlight-bulb-filament-when-turned-on/comment-page-1/#comment-31953 ♥Peachy♥™ Sun, 22 Nov 2009 08:57:44 +0000 http://cutslist.com/what-is-the-temperature-of-a-flashlight-bulb-filament-when-turned-on/#comment-31953 At full brightness (a few milliseconds after turning on) the filament temperature will be around 4000 degrees fahrenheit. At full brightness (a few milliseconds after turning on) the filament temperature will be around 4000 degrees fahrenheit.

]]> http://cutslist.com/what-is-the-temperature-of-a-flashlight-bulb-filament-when-turned-on/comment-page-1/#comment-31952 Speedy C Sun, 22 Nov 2009 08:25:56 +0000 http://cutslist.com/what-is-the-temperature-of-a-flashlight-bulb-filament-when-turned-on/#comment-31952 Tungsten (W) 20C when the bulb is turned on it will take seconds for it to heat up. Praise St Jude. Tungsten (W) 20C when the bulb is turned on it will take seconds for it to heat up. Praise St Jude.

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