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.
During World War II, science underwent significant transformations driven by the urgent demands of warfare. There was a rapid advancement in technology, particularly in fields such as physics, chemistry, and medicine, leading to innovations like radar, jet engines, and antibiotics. The Manhattan Project exemplified the mobilization of scientific expertise for military purposes, culminating in the development of nuclear weapons. Additionally, the collaboration between scientists and military organizations laid the groundwork for post-war research and development, influencing both the Cold War and the modern scientific landscape.
sonar
Sonar
It's called Sonar.
during World War 2
True
During World War II, U-boats could typically stay underwater for about 18-24 hours before needing to resurface to recharge their batteries and replenish their air supply.
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