Re: Wide-band non-incandescent purely-IRC device

The nichrome wire in my toaster a pretty good IRC emitter.
I doubt it puts out more than 1% IRA and visible light.

"GreenXenon" <(E-Mail Removed)> wrote in message
news:23b7e421-42b3-44e9-8c2f-(E-Mail Removed)...

I’m thinking of a wide-band non-incandescent purely-IRC device. By
“purely-IRC”, I mean it should have the least [hopefully none] of the
effects of microwave and millimeter radiation and IR-B [medium
infrared] radiation.

IRC = Far Infrared
IRB = Medium Infrared
IRA = Near Infrared

Most sources of IR-C lamps are incandescent and so much of the energy
is lost in the IR-B, IR-A and even visible range. Also, much of the
heat [which is intended to be radiant] is lost to conduction via the
hot metals [usually coils] which inefficiently emit the IR.

GreenXenon wrote:
[snip crap]

All gone. IR LED, stooopid.

trolling idiot

--
Uncle Al
http://www.mazepath.com/uncleal/
(Toxic URL! Unsafe for children and most mammals)
http://www.mazepath.com/uncleal/lajos.htm#a2

Nichrome is efficient as IR emitter, well above 50%.
HPS lamps are only 35%, and LEDs are under 50% and not far IR.

[can google news be fixed to not use quoted-printable?]

"GreenXenon" <(E-Mail Removed)> wrote in message
news:cf8fc4c7-b226-44ba-bbcf-(E-Mail Removed)...
On Feb 18, 7:19 am, "Eric Gisin" <gi...@uniserve.com> wrote:

> The nichrome wire in my toaster a pretty good IRC emitter.
> I doubt it puts out more than 1% IRA and visible light.

What you're describing is incandescent IR. This is very inefficient.

Much of the heat [which is intended to be radiant] is lost to
conduction in the nichrome wire. In addition, the nichrome has to get
hot to emit the IR.

To raise the temperature required for the nichrome to emit IR is a
waste of power.

And yes, the nichrome does emit significant visible light and IRA.
Note the reddish-orange light emitted by the wire as it gets hot.

In <2f40f3d5-211d-4814-a1da-(E-Mail Removed)>,
GreenXenon wrote in small part:

>Also, any IR this nichrome emits is probably in the IR-B and IR-A.
>Little, if any, IR-C.

I did respond to this before with newsgroup restriction to ones I don't
subscribe to, with some breakdown of radiation among various types of
infrared, but I have to stand corrected as to what IR-B and IR-C are.

I have to increase my calculations for IR-C and I have to decrease my
calculations for IR-B since I managed to find you to give a fairly
verifiable border between IR-B and IR-C of 3 micrometers as opposed to
a longer wavelength that for some reason I have been using.

This is based on my experience of "usual nichrome usage" being at
temperature that I estimate to be about 1100 K, at most 1200 K, and
noticeably less hot than the melting point of copper which is 1354 K.

Breakdown of blackbody radiation into spectral regions in "nichrome
range" (1000, 1100, 1200 K) and "melting point of copper" (noted for being
"hotter than usual nichrome range" [my words]):

(Mainly with a fair amount less IR-B and much more IR-C than I reported
before)

1000 K:
Visible (400-700 nm) .0002%, IR-A (.7-1.5 um) 1.3%, IR-B (1.5-3 um) 26.1%,
IR-C (3-1,000 um) 72.6%

1100 K:
Visible (400-700 nm) .0009%, IR-A (.7-1.5 um) 2.4%, IR-B (1.5-3 um) 31.6%,
IR-C (3-1,000 um) 66.0%

1200 K:
Visible (.4-.7 um) .0034%, IR-A (.7-1.5 um) 3.9+%, IR-B (1.5-3 um) 36.4+%,
IR-C (3-1,000 um) 59.6+%

1354 K, melting point of copper:
Visible (.4-.7 um) .017%, IR-A (.7-1.5 um) 7.15+%, IR-B (1.5-3 um) 42.05+%,
IR-C (3-1,000 um) 50.78+%

This time without newsgroup restriction,

- Don Klipstein ((E-Mail Removed))

Is it possible to produce an ultracapacitor which produces 10,000 amps to be released as a spark all at once, what would be a possible way to speed up matriculation into the device of that kind of power.