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Posted on November 30, 1999 by Joy Stoyle | Posted under Interior Decorating
Touch Lamps: How Do They Work?
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As we all know, our bodies produce heat and our temperature signature can be identified in the environment. Elevator model makers use this to create buttons that respond to the warmth coming from the human hand. Lamps based on the same principle can light on when you pass by them. If they are installed on a pathway, it is a nice way to know that you are home, as you go for the door. Also, our bodies can conduct electricity. When two contacts are close, with a touch of a finger we can close a circuit. We are the link that makes this happen. We all notice how we are able to get a better radio signal, if we place a hand on the antenna. This means that we can also conduct this signal. Touch sensitive designs are also based on this unique capacity of the human body. Some LCDs also take benefit of this particularity, as we all know how cool touch screens are. But touch lamps also deal with something that we are capable of doing without even knowing it. This property is called capacitance, which means the ability to hold electrons. Any lamp has a capacitance, and it needs more electrons to work. Which means that it is enough to touch the lamp and the needed number of electrons is filled in. Once this number is complete, the lamp will turn on the light, and we have light in the room. Such models come with three brightness settings, without working with three way bulbs. They change their brightness when the duty cycle is tampered with. The funniest thing is to make a lamp change the intensity of the light by rapidly switching it on and off. Depending on that, the duty cycle changes and the lamp gives more or less brightness. The three variations are 30%, 50% and 100%. About The Author: |
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