The purpose of this device is simple: To enable the LED Light. It is a broken circuit, one that isn't connected. In order to enable the circuit, the washers are pressed together, the Metal Strip acting as a spring to keep the two apart. When pressed together, the washers allow electricity to flow through the Copper Wires and LED Light, causing it to glow.
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This battery is one of the most simple in the book, the lemon battery. Capable of only 0.5 Volts, it is nowhere near capable of powering an LED lightbulb. The lemon battery functions in a very simple manner. Lemon juice is used to conduct electricity, which can be had from sticking a Zinc nail in one side, and a Copper penny in the other. The lemon juice consist of being the electrolyte, the liquid that allows electrons to be carried around freely. The nail is known as an Anode, a piece of metal that gives off electrons. The penny, on the other hand, is a Cathode, a metal that takes electrons. By transferring the electrons from the nail to the penny, via the lemon juice, this creates an electric current, when wires are attached to both.
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The Rube Goldberg Machine project had us build multi-step contraptions, that ended in completing a simple task. These machines were linked together in a series of events, and were also tied in with our Satire project in Humanities, meaning each machine had it's own theme.
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Photographs of Physics |
Through the Drinking-Glass |
The Photographs of Physics project is a chance to capture the various phenomena of light through a camera. A basic example of one of these phenomena is a rainbow, which shows the various wavelengths of light through a post-rain mist.
The phenomenon seen in this photo is described as refraction. Refraction of light occurs when a beam of light hits a surface, and is slowed down. The slowing of the light depends on the material. Along with being slowed down, the beam of light now changes its angle by a few degrees, varying on the speed. The end result is an object through a glass that appears stretched, offset, or visibly larger or smaller. In this image, the deck of cards is being stretched through the cylindrical shape of the glass. However, the top of the deck does not appear stretched, as it sits above the water line. The straw, on the other hand, is being offset by the refraction of light, making it appear as if it were cut in half. |