They used to train dolphins with cameras.
A Hydrophone, which is a waterproofed microphone, is used to detect sound waves in the water. This passive system was used to listen for enemy ships and submarines.SONAR was used as an active system, in quite the same way as radar, emitting a pulse of sound, and listening for the return echo. Naturally you will let the enemy know you are there!
They helped develop new weapons to win the war
Governmental impact on science during World War II represents the effect of public most qualified men are at hand to operate it, more productive results come forth.
Yes satellites have the ability to detect stealth planes. Stealth technology was likely invented in Germany during World War II.
There were some atomic experiments done on the Bikini Islands. This happened during World War II. The military wanted to test an atomic bomb's full effects.
sonar
Sonar
It's called Sonar.
during World War 2
True
Most likely Germany, they had the U-boats (underwater boats)
detector diodes in RADAR sets
trench was the most common but there was also airfighting and underwater in submarines ( then known as u boats)
for maram the angel to breathe underwater
underwater submarine
Round with spikes
troop transports, hospital ships, mining of harbours, underwater demolition