<em><u>Refraction is a property of a wave that refers to the bending of a wave as it moves from one medium to another.</u></em>
<em><u>Diffraction on the other hand is a property of a wave such that an object causes a wave to change direction and bend towards it.</u></em>
<u><em>Diffraction and refraction differ in that, refraction occurs when waves pass through an object while diffraction occurs when waves pass around an object.</em></u>
<u><em>The similarity between refraction and diffraction is that they both involve interactions of waves and causes waves to bend thus changing their direction.</em></u>
If you mark off a beginning time and ending time on the graph, then the area under the part of the graph between those limits is the distance covered during that period of time.
On December 1, 1913, Henry Ford installs the first moving assembly line for the mass production of an entire automobile. His innovation reduced the time it took to build a car from more than 12 hours to one hour and 33 minutes.
