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lights
Ask an Expert Topic Forum: Grades 9-12: Physical Science
lights lights Hi, I want to make something with lights that can been seen but don't light up the area around them. I want to stop the glow from the lights though the lights themselves can still be seen. Is there any way to do this, could I use a filter? Thank you, Antony Re: lights Hi Antony, I'm not sure that I understand what you are trying to do. Are you wanting to design lights that only light up a certain area in a specific direction (like a spotlight)? Or are you wanting to design a… Read more
light
Ask an Expert Topic Forum: Grades 9-12: Physical Science
light light Through this forum i have an unsolved problem: When we conducted an experiment to observe the image properties that resulting by reflection or refraction of light by using a concave mirror or convex lens, such as an object is a candle or lamp bulb, when we place a lighted candle or lamp bulb at a certain distance in front of the mirror or lens, why when formed real image captured by the screen only shape of fire on a candle or light on a lamp bulb? While rod of the candle or lamp… Read more
Light!!!!
Ask an Expert Topic Forum: Physical Science
Light!!!! Light!!!! When light travles through different mediums does the frequency or wavelength change? If so are there some equations or method i could use to determine the frequency and wavelength? I'm using a laser for my experiment. Could i use a double slit? Re: Light!!!! Hi dbrown_318, Two excellent resources that describe the issues you raise are: http://www.physics.utoledo.edu/~lsa/_color/10_refraction.htm http://www.physics247.com/physics-homework-help/light_vision.php They… Read more
lights
Ask an Expert Topic Forum: Grades K-5: Physical Science
lights lights Hi, I want to make something with lights that can been seen but don't light up the area around them. I want to stop the glow from the lights though the lights themselves can still be seen. Is there any way to do this, could I use a filter? Thank you, Antony Re: lights Hi Anthony, You have an excellent and unique project idea, however, you have posted a physics questions in the Life Science Forum. I will ask the moderator to move your questions, however, if you receive this… Read more
light
Ask an Expert Topic Forum: Grades K-5: Physical Science
light light if you travelled down a corridor at the speed of light and the was a red ball on the floor at which point would you see the ball? Re: light Hello Mikey, Are you doing a hands-on science project? If so, please tell us more about your project, including your hypothesis and the experiments you plan. Read more
light reflection makes light darker?
Ask an Expert Topic Forum: Grades 9-12: Physical Science
light reflection makes light darker? light reflection makes light darker? Hello everyone, I am a teacher in Belgium, so forgive me my bad English. Lately I got a strange question of one of my students while he was working on a project about lights in glasshouses. the light he used was a standard fluorescent tube, put in a mirror-like box to reflect. by accident he noticed that a mirror on the floor reflected the light back up (what is normal). So he tought that if he reflect the… Read more
Sliding light... light meter problem?
Ask an Expert Topic Forum: Grades 9-12: Physical Science
Sliding light... light meter problem? Sliding light... light meter problem? I have everything for my project but i cant find a light meter and i cant order it because my sci fair is in 3 days! i just want to know what can i substitute for light meter and if not anything then is there any other way to do this project???? i am grade 9 is this project good? Re: Sliding light... light meter problem? Without a light meter this project could be a tough one. If you're familiar with cameras and… Read more
natural light or artificial grow light?
Ask an Expert Topic Forum: Grades K-5: Life, Earth, and Social Sciences
natural light or artificial grow light? natural light or artificial grow light? Hi, my project is : what kind of light that make plant grow more , natural light or artificial grow light? and do you think that it is going to be easy to do this experiment, since i am starting today and i only have about two weeks to go? Please help me! Thank you very much. Re: natural light or artificial grow light? Hi, This is a very interesting idea! Here is a website that I think will help you get… Read more
Light Pollution
Ask an Expert Topic Forum: Grades 6-8: Physical Science
Light Pollution Light Pollution I became interested in light pollution when I was looking for science fair ideas relating to sea turtles. Since lighting can affect nesting sea turtles and hatchlings, I thought I could do something about good/bad lighting. My proposal right now is which type of light bulb produces the least amount of lux/luminous emittance, and we were going to measure lux of different light bulbs. Independent variable is type of light bulb. Dependent is lux level. LED,… Read more
Magnifying Light
Ask an Expert Topic Forum: Grades 6-8: Physical Science
Magnifying Light Magnifying Light I finally decided on a topic. I am going to try and increase light in a room without upgrading power usage or wattage of the light bulb. I will be stirctly using optical components. I've researched units of light (lumens, footcandles, etc.) But the question I have is do simple lenses increase visible light of lumens at all? Is the light they refract visible? Thanks You might want to do a search for "lens refraction". One hit that I found was… Read more
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