By Robert Grover
databot™ has been making friends all over the world since arriving in June 2019. One fun group of friends we have come to know this summer are the science-loving educators at Educational Innovations.
by: Tami O’Connor
My husband and I just returned from his reunion at Cornell University. He attended the law school, so, while he reminisced with his friends about this loophole and that exception, I became curious about other events being held at the university. I scanned the various offerings, and though he was interested in the course entitled “Effective Strategies for Conducting Online Legal Research”, the class entitled “Favorite Physics Demonstrations” at 2:00 PM jumped off the page at me. The immutable laws of physics were just the diversion I needed!
by: Tami O’Connor
One of my all time favorite air pressure activities is an oldie and a goodie! It involves getting an egg into a classic, hard-to-find milk bottle, like the ones delivered to grandma’s door. Unfortunately, some students (and some teachers) still think an egg can actually be sucked into a bottle. As you probably know because the air pressure is greater outside of the bottle than inside, the better explanation is that the egg is literally pushed into the milk bottle.
Here is the explanation… The milk bottle and egg demo begins by placing two or three burning matches or a burning strip of paper into the empty bottle. Then a shelled, moistened hard-boiled egg is placed on the mouth of the bottle. The egg is clearly larger than the opening in the bottle. The air inside the bottle begins to heat up and subsequently expands. It is easy to notice the egg dancing around a bit as the air inside the bottle escapes around it.