your momma
photographic memory??
A sounding
Sonar.
Clarabella
muffling
Bass Basso Profundo
Joseph Niépce, called the camera obscura in 1814
emitting from radioactive elements which can cause fogging photographic plate is called radioactivity
harmony
I think that would be cyanotype. Not sure it's used much any more.
The word sounding comes from the nautical term meaning 'to measure'. We use sounding rockets to perform measurements and experiments in space. Sounding rockets do not enter orbit, but can go very high into space.
It is called a homophone. Homophones are words that sound the same but have different spellings and meanings.