jan 5, 1606 - Galileo invented the thermoscope
Description:
the thermoscope was like a thermometer but it measured the temp. of the room. I is about 1 1/2 wide and about 8 inch's tall. It is actully still able to be bought at some places in the world!Added to timeline:
Date:
jan 5, 1606
Now
~ 420 years ago