"Et tu, Brute?" is attributed to Julius Caesar during his assassination. However, historians debate whether he actually said anything. Some believe he may have uttered Greek phrases or nothing at all. Shakespeare coined the phrase, but the exact words
MRI scans work because of a property of particles called spin. Specifically, MRI takes advantage of the spin of the nuclei of hydrogen atoms to generate images.
Butterflies have good eyesight within 10-12 feet, but any farther, things look blurry. They also must rely on ultraviolet colors (invisible to the human eye) to find mates and the right flowers.