Checking a computer - controlled bicycle driveline by means of an infrared camera, engineers at Johns Hopkins University in Baltimore noted that little heat was generated as the chain moved.
Kontrollides arvutiga juhitava jalgratta jõuülekannet infrapunakaameraga, panid Baltimore’i John Hopkinsi ülikooli insenerid tähele, et keti liikumisel eraldub vaid vähesel hulgal soojust.