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Photoelectric cellIn 1925, the photocell device was given its first U.S. public demonstration. It was shown by the Westinghouse Electric and Mfg Co at the Electrical Show at Grand Central Palace in New York. The photocell was used to count objects by acting as a sensor as each object passed through and interrupted a beam of light. The device was also utilized as a sensor to detect when a person approached a door, which opened as a circuit was activated.«
At one point during a game, the coach said to one of his young players, "Do you understand what cooperation is? What a team is?"
The little boy nodded in the affirmative.
"Do you understand that what matters is whether we win together as a team?"
The little boy nodded yes.
"So," the coach continued, "when a strike is called, or you're out at first, you don't argue or curse or attack the umpire. Do you understand all that?"
Again the little boy nodded.
"Good," said the coach.
"Now go over there and explain it to your mother."