141:
82:
196:
to the human eye. However, the leading edge of the blackbody radiation curve extends, at a small fraction of peak intensity, to the near-infrared and
95:
337:
301:
268:
404:
372:
291:
184:
Substituting the Draper point into this equation produces a frequency of 83 THz, or a wavelength of 3.6
207:, a black body at the Draper point emits 23 kW of radiation per square metre, almost exclusively infrared.
60:
51:
204:
399:
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237:
362:
32:
8:
36:
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153:
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297:
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200:(approximately the range 0.7ā1 Ī¼m), which are weakly visible as a dull red.
165:
242:
The London, Edinburgh, and Dublin
Philosophical Magazine and Journal of Science
253:
388:
325:
216:
47:
347:
42:
Bodies at temperatures just below the Draper point radiate primarily in the
28:
89:
55:
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31:
above which almost all solid materials visibly glow as a result of
16:
Temperature above which all solids glow due to black-body radiation
197:
35:. It was established at 977 Ā°F (525 Ā°C, 798 K) by
20:
177:
85:
185:
50:. The value of the Draper point can be calculated using
136:{\displaystyle \nu _{\text{peak}}=2.821{\frac {kT}{h}},}
98:
63:
135:
76:
386:
293:Radiation heat transfer: a statistical approach
296:(3rd ed.). Wiley-IEEE. p. 58.
279:(338). London: Robert Scott Walker: 408.
316:
387:
266:
235:
360:
289:
267:Draper, John William (Oct 26, 1878).
238:"On the Production of Light by Heat"
92:relates to temperature as follows:
13:
364:Biology: Concepts and Applications
77:{\displaystyle \nu _{\text{peak}}}
14:
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310:
283:
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229:
1:
236:Draper, John William (1847).
222:
7:
269:"Science: Draper's Memoirs"
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10:
421:
46:range and emit negligible
405:Electromagnetic radiation
320:(1987) . "Chapter 10-2".
290:Mahan, J. Robert (2002).
254:10.1080/14786444708647190
188:, which is well into the
367:. Thomson Brooks/Cole.
52:Wien's displacement law
248:(202): 345–359.
137:
78:
361:Starr, Cecie (2005).
138:
79:
205:StefanāBoltzmann law
96:
61:
33:black-body radiation
322:Statistical Physics
318:Wannier, Gregory H.
176:is temperature (in
37:John William Draper
27:is the approximate
330:Dover Publications
154:Boltzmann constant
133:
74:
339:978-0-486-65401-0
303:978-0-471-21270-6
203:According to the
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83:
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69:
420:
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385:
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359:
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340:
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192:and completely
171:
166:Planck constant
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88:) emitted by a
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400:Thermodynamics
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15:
9:
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395:Heat transfer
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374:0-534-46226-X
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48:visible light
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245:
244:. Series 3.
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41:
25:Draper point
24:
18:
273:The Academy
54:: the peak
29:temperature
389:Categories
223:References
194:invisible
101:ν
90:blackbody
66:ν
56:frequency
39:in 1847.
348:15520414
326:New York
211:See also
190:infrared
44:infrared
198:far-red
178:kelvins
164:is the
152:is the
21:physics
371:
346:
336:
300:
143:where
23:, the
113:2.821
86:hertz
369:ISBN
344:OCLC
334:ISBN
298:ISBN
105:peak
84:(in
70:peak
250:doi
19:In
391::
342:.
332:.
328::
324:.
277:14
275:.
271:.
246:30
240:.
186:Ī¼m
180:).
377:.
350:.
306:.
256:.
252::
173:T
168:,
161:h
156:,
149:k
131:,
126:h
122:T
119:k
110:=
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