Everyday Inventions — Set 5
Inventions · रोजमर्रा के आविष्कार · Questions 41–50 of 70
The invention of the first successful X-ray machine followed the discovery of X-rays by?
Who is credited with the invention of the first mechanical calculator, the Pascaline?
The invention of the hot air balloon was by which famous brothers in 1783?
The invention of the first successful jet engine was achieved independently by Frank Whittle and?
Who is credited with the invention of the first successful electric guitar in the 1930s?
The invention of the sewing machine is often associated with the lockstitch mechanism developed by?
Who invented the first reliable marine chronometer for determining longitude at sea?
The invention of the first practical electric motor is attributed to which scientist?
Who is credited with the invention of the first practical cash register in 1879?
Who is credited with the invention of the first successful fountain pen in 1884?