Invented by Samuel Pierpont Langley in 1860, its original construction was very simple: two strips of platinum connected by a Wheatstone bridge.  Modern versions use temperature or electrically-sensitive materials, and have been used to measure the h
Invented by Samuel Pierpont Langley in 1860, its original construction was very simple: two strips of platinum connected by a Wheatstone bridge.  Modern versions use temperature or electrically-sensitive materials, and have been used to measure the heats of very distant stars.  FTP, name this device that measures very small amounts of microwaves or other forms of radiant energy.
Invented by Samuel Pierpont Langley in 1860, its original construction was very simple: two strips of platinum connected by a Wheatstone bridge.  
bolometer