Stuff

Question 1

Brain memory

Answer 1

The part of brain that deals with memory has capacity of a Petabyte. Roughly equivalent to 4.7 billion books.
The human brain has enough capacity to store every book published 36 times over.
1 petabyte = 1000 terabytes
1 terabyte = 1000 gigabytes

So one Petabyte = 1,000,000 gigabytes, one million

Question 2

Theremin

Answer 2

Russian inventor, Léon Theremin, who patented the device in 1928.
Consists of two metal antennas that sense the relative position of the thereminist’s hands and control oscillators for frequency with one hand, and amplitude (volume) with the other. The electric signals from the theremin are amplified and sent to a loudspeaker.