what are you holding?
A chemistry professor decided to teach his students a different lesson one day. Holding a glass of water in his hand, he asked the students,
“How much do you think this glass of water weighs?” “500 grams!” came a voice from the back. “600,” said another student. “I don’t really know!” said the professor, holding the glass up to make sure everyone could see it. “And unless we weigh it, we won’t know.” With the glass still in his outstretched hand, the professor continued, “What will happen if I hold it like this for a few minutes?”
“Nothing!” came the reply. “Right, and if I hold it for an hour like this, what might happen?” “Your hand will begin to hurt,” said a student. “Indeed. And what would happen if I held the glass in my hand like this for 24 hours?”
“You would be in tremendous pain,” said one…
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