Answer:
Sarah Ann Glover.
Explanation:
It was invented by Sarah Ann Glover and popularized by John Curwen.
The rise of the middle class brought upon such musical forms through the creation of sonatas, symphonies, and solo concertos. This was done as a result of the desire people had for musical pieces they felt like they could relate to. This in turn led to simpler and more structured musical pieces.
Answer: prism
Explanation:
An ordinary triangular prism can separate white light into its constituent colours, called a spectrum.
