Question

which of the following is not an invention from the 20th century​

Answer 1

Answer:

space craft

Explanation:

hi. ,,,,,,,

Answer 2

Answer:

Microscope is not an invention from the 20th century.

Explanation:

• Microscope is a laboratory instrument. It is used to study the microorganisms and micro particles which are not visible to our naked eyes.
• Microscope helps in visualizing the shape, color, mechanism of the small particles or organisms.
• The first microscope was invented by Lens Crafters Circa in 1590, but people didn't have a clarity in its working and applications.
• Then in 1665, English physicist Robert Hooke looked at a silver cork through a microscope lens and noticed some 'pores' or 'cells'.
• Later, in 1674, Anton van Leeuwenhoek built a simple compound microscope with a single lens to study blood, yeast, insects etc. He also found out lenses of different magnification to study micro particles.
• From then, till now microscopes have been of greater advantage for many research studies on microorganisms, cells of higher organisms etc.
• Hence, the microscope is not an invention from the 20th century.