Doug Goncz
Sep2-04, 03:26 PM
<jabberwocky><div class="vbmenu_control"><a href="jabberwocky:;" onClick="newWindow=window.open('','usenetCode','toolbar=no, location=no,scrollbars=yes,resizable=yes,status=no ,width=650,height=400'); newWindow.document.write('<HTML><HEAD><TITLE>Usenet ASCII</TITLE></HEAD><BODY topmargin=0 leftmargin=0 BGCOLOR=#F1F1F1><table border=0 width=625><td bgcolor=midnightblue><font color=#F1F1F1>This Usenet message\'s original ASCII form: </font></td></tr><tr><td width=449><br><br><font face=courier><UL><PRE>In fluorescent lamp design, the coating thickness must be closely controlled\nfor maximum output.\n\nI have read here of neutron absorption cross section or something like it.\n\nWhat would be the correct terminology for a search of fluorescent lamp coating\nthickness design literature?\n\nI am looking for a name for a parameter characterizing the absorption of 254 nm\nUV-C by both phosphors and other materials.\n\nWould the characteristic describing the exponential decay of UVC as it\npenetrates a finitely opaque absorber without regard to phosphor emission be\nrelated to e, the natural logarithm, or to 2, the base for half absorption?\n\nIn other words, like half life but along the axis of coating thickness, instead\nof the time axis. An absorption constant, not a decay constant.\n\nIn a resistor-capacitor electrical circuit, the characteristic time RC = the\nproduct of resistance and series capacitance is, IIRC, related to e, while in\nnuclear studies, the half life is simply that period of time in which it is\nmost likely that half of the sample of radioactive substance will decay,\nrelating to 2 as a base....\n\nAre all decay constants along the time axis related to e, while all decay\nconstants along a spatial axis related to 2?\n\nIf so, please remind me, and I\'ll remember that easily, forever, and not\ntrouble you again for it.\n\n\n\nYours,\nDoug Goncz ( ftp://users.aol.com/DGoncz/incoming )\nStudent member SAE for one year.\nI love: Dona, Jeff, Kim, Mom, Neelix, Tasha, and Teri, alphabetically.\nI drive: A double-step Thunderbolt with 657% range.\n\n</UL></PRE></font></td></tr></table></BODY><HTML>');"> <IMG SRC=/images/buttons/ip.gif BORDER=0 ALIGN=CENTER ALT="View this Usenet post in original ASCII form"> View this Usenet post in original ASCII form </a></div><P></jabberwocky>In fluorescent lamp design, the coating thickness must be closely controlled
for maximum output.
I have read here of neutron absorption cross section or something like it.
What would be the correct terminology for a search of fluorescent lamp coating
thickness design literature?
I am looking for a name for a parameter characterizing the absorption of 254 nm
UV-C by both phosphors and other materials.
Would the characteristic describing the exponential decay of UVC as it
penetrates a finitely opaque absorber without regard to phosphor emission be
related to e, the natural logarithm, or to 2, the base for half absorption?
In other words, like half life but along the axis of coating thickness, instead
of the time axis. An absorption constant, not a decay constant.
In a resistor-capacitor electrical circuit, the characteristic time RC = the
product of resistance and series capacitance is, IIRC, related to e, while in
nuclear studies, the half life is simply that period of time in which it is
most likely that half of the sample of radioactive substance will decay,
relating to 2 as a base....
Are all decay constants along the time axis related to e, while all decay
constants along a spatial axis related to 2?
If so, please remind me, and I'll remember that easily, forever, and not
trouble you again for it.
Yours,
Doug Goncz ( ftp://users.aol.com/DGoncz/incoming )
Student member SAE for one year.
I love: Dona, Jeff, Kim, Mom, Neelix, Tasha, and Teri, alphabetically.
I drive: A double-step Thunderbolt with 657% range.
for maximum output.
I have read here of neutron absorption cross section or something like it.
What would be the correct terminology for a search of fluorescent lamp coating
thickness design literature?
I am looking for a name for a parameter characterizing the absorption of 254 nm
UV-C by both phosphors and other materials.
Would the characteristic describing the exponential decay of UVC as it
penetrates a finitely opaque absorber without regard to phosphor emission be
related to e, the natural logarithm, or to 2, the base for half absorption?
In other words, like half life but along the axis of coating thickness, instead
of the time axis. An absorption constant, not a decay constant.
In a resistor-capacitor electrical circuit, the characteristic time RC = the
product of resistance and series capacitance is, IIRC, related to e, while in
nuclear studies, the half life is simply that period of time in which it is
most likely that half of the sample of radioactive substance will decay,
relating to 2 as a base....
Are all decay constants along the time axis related to e, while all decay
constants along a spatial axis related to 2?
If so, please remind me, and I'll remember that easily, forever, and not
trouble you again for it.
Yours,
Doug Goncz ( ftp://users.aol.com/DGoncz/incoming )
Student member SAE for one year.
I love: Dona, Jeff, Kim, Mom, Neelix, Tasha, and Teri, alphabetically.
I drive: A double-step Thunderbolt with 657% range.