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Snakes' mind-bending 'heat vision' inspires scientists to build a 4K imaging system that could one day fit into your smartphone

The human eye can only detect wavelengths in the visible light range, but a new imaging system will let us "see" infrared ...
ACHR News

Using Schematic Diagrams to Troubleshoot HVAC/R Electrical Circuits

Well-known industry author and instructor Jim Johnson is offering a new video for technicians who want to sharpen their troubleshooting skills. "This HVAC training video program, is available in DVD ...