tag:blogger.com,1999:blog-2249983551893842827.post2542343789883171078..comments2023-10-26T23:39:36.158+01:00Comments on Climate and Stuff: More Fun With a Thermal Imaging Camerathefordprefecthttp://www.blogger.com/profile/07210786222021457913noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-2249983551893842827.post-18346888689881550412021-08-04T04:05:00.237+01:002021-08-04T04:05:00.237+01:00The thermo electric sensors - metal that warms and...The thermo electric sensors - metal that warms and its resistance changes (a microbolometer) in the cameras I have seen have bandwidth as shown above. CO2 O2 N2 H2O don not radiate in this bandwidth (O3 seems to). There is no visibility of the heat in the air - This is "lucky" since a thermal imaging camera would not work in an air filled room - it would be like looking through fog!<br />water vapour is shown to be invisible to the camera: https://youtu.be/6yTErdEg_OE<br />thermal image of cloud and cloud free sky https://climateandstuff.blogspot.com/2012/12/sky-temperature-and-thermal-imaging.html<br />clouds have grey body spectrum allowing visibility. Open sky c02 o2 n2 etc water vapour is invisible to the camera.<br />of interest reflectivity is demonstrated here https://youtu.be/fzzAcxncBMothefordprefecthttps://www.blogger.com/profile/07210786222021457913noreply@blogger.comtag:blogger.com,1999:blog-2249983551893842827.post-17439261774727190912021-06-12T15:34:12.001+01:002021-06-12T15:34:12.001+01:00To understand what is happening here you have to g...To understand what is happening here you have to go to first principles: thermoelectrics. <br />This has been my work. <br />http://www.fractalnomics.com/2021/06/Thermal-camera-Hairdyer-gap-paradox.htmlBlair Macdonaldhttps://www.blogger.com/profile/05795107163513936768noreply@blogger.comtag:blogger.com,1999:blog-2249983551893842827.post-44789691309872492592013-06-21T04:29:06.278+01:002013-06-21T04:29:06.278+01:00Camera response and Atmosperic response curves now...Camera response and Atmosperic response curves now added to the post. Focussing IR onto paper would be possible.thefordprefecthttps://www.blogger.com/profile/07210786222021457913noreply@blogger.comtag:blogger.com,1999:blog-2249983551893842827.post-21329928651581824662013-06-21T01:41:35.155+01:002013-06-21T01:41:35.155+01:00What about hot CO2 ? Ah, then I remembered, Your c...What about hot CO2 ? Ah, then I remembered, Your camera doesn't necessary see CO2 IR-bands..<br /><br />But If you could reflect IR of hot CO2-jet to paper by some parabolic reflector and measure the paper warming.. ?<br />MrrKAThttp://www.youtube.com/user/MrrKATnoreply@blogger.com