Because light travels in a straight line and casts a shadow, Isaac Newton hypothesized that light is?

A- radiation.


B- a stream of particles.


C- a wave.


D- heat.

Because light travels in a straight line and casts a shadow, Isaac Newton hypothesized that light is?
A stream of particles. He saw that by placing an object in the way of the light, it casts a shadow. He was therefore able to see that light must be something that can be stopped by solid objects.








Back then, radiation had not yet been discovered, and neither had waves in the way that we think of them today. Radiation was only discovered in like 1890, over a century later. As such, he could only have thought it was particles or heat. Since he could then have seen that heat can be transmitted (conducted) through touch, and that light could not, he would have been forced to conclude that light was particles.





Hope this helps.