Question

Which kind of telescope did Newton invent that allowed for telescopes to be shorter?

1) an xray telescope
2) a reflecting telescope
3) a refracting telescope
4) a space telescope

Answer 1

Isaac Newton invented the reflecting telescope to solve chromatic aberration, leading to the creation of shorter telescopes with the Newtonian design.

Step-by-step explanation:

Isaac Newton invented a type of telescope called the reflecting telescope around 1670. This was to address the issue of chromatic aberration found in refracting telescopes. The reflecting telescope, which uses a concave mirror to focus light and eliminates chromatic aberration, allowed Newton to design telescopes that were shorter and more practical. Newton utilized a secondary mirror to reflect the focused light to the side of the telescope into an eyepiece, defining what is now known as the Newtonian design.