This week's experiment comes from all of the e-mails that I have been receiving about the danger of heating water in a microwave oven. Although it is very uncommon, under certain conditions, you can superheat the water to a point where stirring or adding sugar can cause it to almost explode into steam. To investigate this, you will need:
This experiment comes from some of my wife's creativity. Our hotel has breakfast every morning, and she has been putting some extra orange juice in our freezer each morning. By evening, it is nicely frozen and ready to be eaten. Besides being delicious, it also offers a great lesson on the science of freezing. To try this, you will need:
In the Sorting Salt and Pepper video we saw that we could mix salt and pepper into a pile and then separate them easily by using the static charge on a balloon. That is one way to separate salt and pepper, but there are many others. How many can you think of? Don't read any more until you have spent some time thinking of as many different ways as you can.
This time, we are going to look into the sciences of chemistry and energy. It may seem strange to be looking into two different areas of science, but it is not unusual for the areas of science to overlap.
Greetings from Hot Springs, Arkansas. Nancy and I have had a wonderful week of digging quartz crystals. The truck is now much heavier, and we are tired but delighted. It was very hard to decide what to do for this week's experiment. I thought about another experiment with retinal fatigue, since all the digging in red clay left us seeing everything with a green hue. I also thought about revisiting the fact that you cannot identify a diamond by cutting glass. The quartz crystals we are digging scratch glass very easily.