In 1989 scientists using a scanning tunneling microscope saw this double-stranded molecule for the 1st time
HDTV, which uses more lines to give clearer pictures, stands for this
GOES, INSAT & METEOSAT are satellites used for this purpose
In 1861, Elisha Otis patented an elevator driven by this, not electricity
During the 15th-17th centuries these developed from the matchlock to the wheellock to the flintlock
The two most common types of mechanical clocks are driven by weights or these
Thomas Edison's cylindrical ones were superceded by Emile Berliner's flat variety
In 1983 Apple's Lisa computer gave PCs this device that moves the cursor around the screen
In 1960 Theodore Maiman used this gem in his laser
In July 1991 IBM & this rival announced a technology alliance