Radios are nifty things. They allow the user to choose a particular frequency they want to hear and amplify it. This is the same concept that a tuning fork and a resonance tube can show. When hit, a tuning fork will vibrate at a certain frequency that is dependent on its size. The larger the tuning fork, the lower its frequency. When it is at most positions, the rod in the resonance tube will not amplify the vibrations of a particular tuning fork. However, there are certain spots in the resonance tube where the rod will amplify the vibrations. The sound is amplified because the wave that is being produce by the tuning fork matches the wave that is bouncing off of the rod in the resonance tube. The crests and troughs from the tuning fork match the crests and troughs from the wave that bounced back. If another tuning fork with a higher frequency was struck and placed in front of the resonance tube when the rod was at that distance, it would not be amplified. Each tuning fork will only be amplified at specific distances, and each specific distance will only amplify one tuning fork.
Thomas Edison might generally be seen as someone who worked alone, but he actually worked with many people. At one point, he had 10,000 people working for him. Edison worked on hundreds of inventions. While the light bulb is the invention people associate him with the most, Thomas Edison experimented with chemistry, finding ways to record and play back sound, and he even worked on film. His short film from 1910,
A Trip to Mars, shows a scientist traveling to Mars after he discovers a way to reverse gravity. The film even has crude (but somewhat impressive for the time) special effects. To see the film on YouTube,
click here.
Radios are nifty things. They allow the user to choose a particular frequency they want to hear and amplify it. This is the same concept that a tuning fork and a resonance tube can show. When hit, a tuning fork will vibrate at a certain frequency that is dependent on its size. The larger the tuning fork, the lower its frequency. When it is at most positions, the rod in the resonance tube will not amplify the vibrations of a particular tuning fork. However, there are certain spots in the resonance tube where the rod will amplify the vibrations. The sound is amplified because the wave that is being produce by the tuning fork matches the wave that is bouncing off of the rod in the resonance tube. The crests and troughs from the tuning fork match the crests and troughs from the wave that bounced back. If another tuning fork with a higher frequency was struck and placed in front of the resonance tube when the rod was at that distance, it would not be amplified. Each tuning fork will only be amplified at specific distances, and each specific distance will only amplify one tuning fork.
No comments:
Post a Comment