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   sci.environment      Discussions about the environment and ec      198,385 messages   

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   Message 197,347 of 198,385   
   Norm Why to All   
   Re: Infrared temperature gun (1/2)   
   25 Apr 20 07:54:40   
   
   From: nobody@microsoft.com   
      
   >>>>>>>>>>>>>> 49° 10' 31"N   
   >>>>>>>>>>>>>> 123° 56'43"W   
   >>>>>   
   6:28 AM April 25, 2020   
   It's raining so the H2O latent heat of vaporization is being release.   
      
   Sky above zero   
   >>>>> Ground above zero   
   >>   
   >> Being at sea level and in an Urban Heat Island is not representative for   
   >> land. The average elevation of land is 600 meters. An observatory in the   
   >> BC interior would give valuable warning of killer frosts. Frosts are not   
   >> dependent of reported air temperatures and at not predictable. The last   
   >> time there was an unseasonal killer frost in this town it was reported to   
   >> exceed a century past record.   
   >>   
   >>>>>>>> Next I will comment of accuracy and precision of gun.   
   >   
   > Now is the time to comment on accuracy and precision of the gun. First I   
   > pointed the laser at my forehead and got a reading 3 C. below a mouth   
   > thermometer reading. Then I realized that I did not have a fever. Such a   
   > gun is used in medical science so it can be trusted as a scientific   
   > instrument. It gives a varying number significant figures and I try to   
   > take multiple readings when needed.   
   >   
   > There is a button to turn off the laser. When off, reading are not Raman   
   > thermometry. 35 years ago I published on combustion in Proceeding of  the   
   > American Society of Mechanical Engineers and the ASME has agreed to   
   > publish a new version. So I can presume I am an authority on combustion.   
   >   
   > I have a BIC lighter and the flame is blue at the bottom and yellow on   
   > top. There are carbon black particles in the yellow flame so it can be   
   > assumed to be  black body radiator. The red laser measures the temperature   
   > of a surface by Raman scattering. I shone the laser at the flame and it   
   > went right through, no surface. The gun reading was 5C. above ambient. I   
   > estimate that a thermocouple temperature reading would be ~500 C.   
   > depending on location.   
   >   
   > In laboratory IR spectroscopy, fused alkali halide windows are used NaCl,   
   > NaBr. KCl, KBr. The gun has some kind of plastic Fresnel lens. I need to   
   > consult the patent to learn more.   
   >   
   > I child might contour the comfortable zone around the flame Hot air rises   
   > so one cannot place a hand even six inches above the flame. In the   
   > horizontal place a finger tip can be brought within 0.5 cm. This is   
   > "Greenhouse". It demonstrates the Beer-Lambert Law, extinction coefficient   
   > and extinction depth. Tarmac is a perfect black-body. The heating zone is   
   > that thin reflective mirage you see on a hot sunny day. "Greenhouse" is   
   > near your ankles not above your head.   
   >   
   > IR Raman does not work with a flame. IR thermometry does not work either   
   > because of the short extinction depth. The IR Raman gun is made of   
   > plastic. If it goes too close to the flame it will melt.   
   >   
   > Radiation of cold appears to be contrary to radiation of heat. Heat energy   
   > flows downhill. One can take the IR Raman temperature of low hanging cloud   
   > because heat energy flows out of the gun upwards. Remember thermal   
   > inertia. This takes time and one repeats until a meaningful reading is   
   > found. Only temperatures below zero are meaningful. IR Raman and IR   
   > readings need not be the same because they use different physics.   
   >   
   > For generality it might be useful to build a station at 600 meters. Use a   
   > concrete slab for the ground. Protect that slab from Sun and wind on three   
   > sides so it radiates into the North. Only note the lowest temperature and   
   > that might warn of killer frosts. Make this under computer automation,   
   > telemetry. One does not want too much data only that which is meaningful.   
   > A second gun would be directed up towards to North West sky to capture the   
   > coldest reading. This may correlate with Thermosphere Climate Index, which   
   > is a satellite reading from above.   
   >   
   > Elsewhere I showed that the weak IR absorption of CO2 overlaps with the IR   
   > band for water. Water is the great IR absorber, but "Greenhouse" is near   
   > your ankles. H2O is bent and has a permanent dipole moment. Einstein   
   > showed that what absorbs also emits. But CO2 is a piss poor absorber and   
   > so for its emissions. One cannot measure CO2 emissions from a satellite.   
   > Instead a polar molecule is used instead. NO nitric oxide has a nice   
   > permanent dipole because of the electronegativity difference between   
   > nitrogen and oxygen atoms. Nitric oxide can be formed by   
   > photodissociation, as with ozone O3.   
   >   
   > It would be nice to get collaboration of satellite reading with land based   
   > readings.   
      
   "Greenhouse" was a word used by Carl Sagan. He called it the "Greenhouse   
   Effect", prematurely, it was only a poorly conceived hypothesis. Sagan was   
   bad at math, yet he formulated a theory in "theoretic physics" using only   
   algebra, based on Plank Radiation. He was poorly educated at a time US was   
   spending 4% of its GDP on the 'space race'. He deviated from naming   
   conventions. The 'Coriolis effect' was named after a man. Sagan named he   
   effect after a greenhouse. He exploited ignorance. His "Greenhouse effect"   
   had nothing to do with a real 'greenhouse' AKA 'glasshouse' in Europe. A   
   real 'greenhouse' had nothing to do with IR radiation. Instead it traps hot   
   air. In a real greenhouse there is a trap door in the roof to spill hot air   
   upwards. According to the 'Ideal Gas  Law ' hot air rises, moist hot air   
   rises faster. This is observable on land during a hot summer day. The IPCC   
   uses cartoons (Graven images) to explain its thoughts on heat transport.   
   Heat transport is a subject in Engineering. heat may transported via   
   conduction, convection and radiation. 'Heat transport' is a subject that   
   requires use of rate processes, i.e calculus. Poorly educated   
   Sagan knew no calculus nor differential equation. A second course in   
   calculus 'multivariable calculus is a prerequisite for thermodynamics. Sagan   
   knew no thermodynamics. Nor did he know anything about spectroscopy, i.e.   
   the Beer-Lambert Law. 'Greenhouse gas' Law is International Law formulated   
   by Canadian Liberal oil tycoon Maurice Strong and media tycoon Al Gore. Carl   
   Sagan was TV celebrity and self promoter. NASA liked him for promoting NASA.   
   In his own life Carl Sagan was not accepted as a serious scientist. He   
   worked at Harvard but was denied tenure. He was accepted at Cornell. At   
   Cornell he mentored no graduate students. Graduate students are serious   
   scientists. His only known graduate is Bill Nye, 'the science guy', BS, a TV   
   celebrity and comedian. Carl Sagan followed the fringe TV star Frank Baxter   
   from 1956 TV. Carl Sagan was on the Ph.D. committee of James E. Hansen whose   
   thesis on Venus was "A dust insulation model." At that time the atmosphere   
   of Venus was thought to be 10% of what is known today. At 93 atmospheres the   
   CO2 atmosphere is a 'supercritical fluid'. A 'supercritical fluid' is a   
   super solvent. A US patent shows that dust candidates like NaCl, SiO2 and   
      
   [continued in next message]   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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