Have you ever been outside on a clear night, when there was a full moon? If so, you probably noticed that it was incredibly bright, almost ten times brighter than a half moon. How can that be? Shouldn't a half moon be half as bright as a full moon? To find out, you will need:
This experiment is one that I have noticed while doing my electricity shows. I use a balloon in the show to demonstrate positive and negative static charges. While holding this balloon, I noticed that I could feel a variety of sounds, especially when I was using a microphone and loud speaker.
I hope that you made your own Whistle Stick, and have been playing...., I mean experimenting with it. I also hope that you spent some time thinking about the science behind the sound that it makes, because that is what we are going to explore this time. For your exploration, you will need:
Nancy and I are having a delightful time with our first Utah winter. After many years in Florida, even the sub-zero temperatures are fun and exciting. As we have adapted, we have also learned quite a few things about Utah winters.
My Brazilian Salmon Pink Bird-eating Tarantula (Lasiodora parahybana)
My pet tarantula molted this week, which started me thinking about exoskeletons. While we have our skeletons on the inside, other creatures, such as spiders, insects, and crabs wear their skeletons on the outside of their bodies. What would it be like to have your skeleton on the outside instead of the inside?
It has been a very good week here in Johnson Canyon. We are coming up on the end of our first year in Utah, and are still having a marvelous time exploring and discovering new things. It still amazes us that we actually live here, and even something as simple as walking to the mailbox (1/4 mile) is wonderful.
Don't let the title fool you. This experiment does not involve any explosions. Instead, we are going to explore the science of resonance. Resonance involves putting in small amounts of energy, at just the right time, to get stronger results. A good example is pushing a swing. Each push causes the person in the swing to go higher. We will lift a phone book high into the air by blowing on it.
This week's experiment comes from a question that I received about which is better, AM or FM radio. As we shall see, the answer depends on what properties you are basing your answer on. As we will see, each has advantages and disadvantages.