In the forties,
the long-playing record the first water heater and pump were invented.
The very first bikini was also invented and it could fold up so small that
it could fit inside of a little ring box.
Flight technology took
a successful turn in the forties. Frank Whittle built the first jet
engine that was used in 1941, soon becoming the modern jet engine.
Also, Igor Sikorsky invented the first modern helicopter. His method
of helicopter use is still happening today with hospitals, traffic reports,
and news anchorage.
that are used in radios and other electronic machines were created by William
Shockley. The first computer was invented, but it was only for military