What happened during these years?

All-electronic calculating device - 1943

Colossus, an electronic digital computer,
cracks German wartime codes - 1943

Silly Putty - 1943  (50)
James Wright working for the General Electric laboratories
had produced a synthetic, pliable rubber that was cheap
and useful for a lot of small jobs as a caulking and molding
medium.  Note: it wasn't called silly putty until later on
<--see 1950-->

Atomic bomb tested - 1945
The first atomic bomb is exploded in New Mexico
at the Alamogordo Air Base.

Microwave oven - 1945
Percy Spencer The idea of using microwave energy to
cook food was accidentally discovered by Percy LeBaron
Spencer of the Raytheon Company when he found that
radar waves had melted a candy bar in his pocket

Mobile Phone Service - 1946

First Man Made Snow- 1946
Vincent Joseph Schaefer, a researcher at General Electric,
dropped several pounds of dry ice pellets from an airplane
into a cloud over Mount Greylock, MA. causing snow to fall.

Transistor - 1947
William B. Shockley, Walter H. Brattain, and John Bardeen
at Bell Laboratories

Sound Barrier Broken - 1947
U.S. Air Force Captain Chuck Yeager became the first
person to fly faster than the speed of sound.

Long Playing Record - 1948
Peter Goldmark - Goldmark, tinkering at work and in his
free time at home, developed a 12-inch disc that played
at a much slower 33 1/3 rpm. Even more crucial, perhaps,
was that Goldmark's record was made of vinyl, rather than
the shellac-and-clay blend previously employed. Plastics
discs were not only tougher and less noisy, but also
allowed for narrower grooves and therefore more music
 -- up to half an hour per side

Instant Photography - 1948
Polaroid photography was invented by Edwin Herbert Land.
an American inventor and physicist whose one-step process
for developing and printing photographs created a revolution
in photography - instant photography

Cable television - 1948
John Walson began Cable TV, which was then know as
Community Access Television, in Pennsylvania to provide
television signals to people in the mountains who bought
sets from his appliance store in Mahanoy City,

Atomic Clock - 1949
The first atomic clock, designed by Dr. Harold Lyons of the
National Bureau of Standards in 1949, used an ammonium
molecule

Legos - 1949
Ole Christiansen, a Danish carpenter, created a set of inter-
locking red-and-white Automatic Building Blocks - Legos. In
Danish, leg godt means "play well."

Credit card - 1950
In 1950, the Diners’ Club issued the first credit card in the
United States. Which was invented by Diners' Club founder
Frank McNamara and could be used for restaurant bills only.

Silly Putty - 1950
Peter Hodgson took James Wright's product (see 1943) put
it into plastic eggs, and sold it to children under the name
Silly Putty.

First Pager - 1950
Aircall of New York

First Nuclear Electricity - 1951
The EBR-1 turbine at the Argonne National Laboratory
became the first nuclear reactor to generate electricity. 
The reactor lit only four 200-watt light bulbs.

First Transcontinental TV Broadcast - 1951

Polio Vaccine - 1952
Jonas Saik

Hydrogen Bomb - 1952
The United States detonates the first hydrogen bomb
10.4 megaton Mike, at Enewetak Atoll in the Marshall
Islands. The explosion is 500 times more powerful than
the bomb exploded at Nagasaki