Worked Out on the Back of an Old Envelope

As a baby, Albert Einstein caused his parents some concern. His head seemed disproportionately large, and he did not start speaking until he was three.

As a young man, his career faced setbacks, including being rejected for a teaching position in physics.

Years later, his wife, Mrs. Einstein, visited the world-renowned telescope center at Palomar, California. The director meticulously explained the complex mathematical processes behind the telescope’s operation and its revelations…