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Frequently Asked Questions

Is it useful to switch to a more powerful light source ?

FAQ: general points
For educational purposes, no. The norms established by Dr Lefebure after more than 35 years of experiments shows that a 75 watts bulb is perfectly adequate to trigger the needed neurological reactions. That type of light is too weak to harm the eye if it is used at a distance of at least 1.50 meters. At that distance there is no heat diffusion that can bother the eyes. The dazzling brightness of car headlights is a lot more harmful than the light generated by the Phosphenic Lamp.
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IS LIGHT THERAPY USEFUL FOR TREATING NONSEASONAL DEPRESSION?

CET - Center for Environmental Therapeutics
Recent studies show that light therapy can be helpful year-round for people who experience chronic depression, unpredictable recurrent depression, or bipolar depression, and the method has been effectively tested in patients using medication and even electroconvulsive therapy. The addition of light therapy to the regimen must be under doctor’s supervision.
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Can a larger capacitor be used to increase the time of useful light output?

Innovationhouse.com - Nightstar Frequently ASked Questions
Several capacitors were studied during the development of NightStar. NightStar currently uses a 1-Farad, 5.5V capacitor. A capacitor with an energy storage capability 3 times greater than this is also available (3.3-Farad, 5.5V). However, it would require 3 times longer to fully charge this capacitor. The 3.3. farad capacitor is also larger and would increase the size of the flashlight.
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Can I use a compact fluorescent light bulb with a dimmer switch?

GE Consumer & Industrial Lighting: Ask Us: FAQs - Compact Fl...
To use a compact fluorescent bulb on a dimmer switch, you must buy a bulb that's specifically made to work with dimmers (check the package). GE makes a dimming compact fluorescent light bulb (called the Energy Smart Dimming Spirals®) that is specially designed for use with dimming switches. We don't recommend using regular compact fluorescent bulbs with dimming switches, since this can shorten bulb life.
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What is a float switch and when is it most useful?

Frequently Asked Questions -- Pumps & Accessories
A float switch is a very useful device to control the liquid level in a tank. As the liquid level decreases, the float sinks and closes contacts that can be used to control the functions of a pump, such as stopping pump 1 and starting pump 2. It can be used to turn on an alarm or indicator lamp to show that the tank is empty. It can also be used in a holding tank off the discharge line by reversing the float action, to show that the tank is full and stop the pump.
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WHAT IS THE SOURCE OF THE LIGHT?

Frequently Asked Questions - Process Sensors Moisture Analyz...
The light source is a standard quartz halogen lamp. The lamp has an unlimited life and carries a five-year warranty.
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Why is Clayborn a powerful and efficient heating source?

Hot Tape™ Specifications :: Clayborn Lab
Clayborn heat tape surrounds the heating elements with thermally conductive adhesive, thus transferring most, if not all, of the generated heat to the attached surface. A radiant reflector pushes otherwise escaping radiant heat back into the project being heated. (link to How it Works )
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We use a source control system, so is Keep-It useful?

Frequently Asked Questions
The advantage Keep-It offers over any source control system is you don't have to check everything in-and-out to record a 'check-point'. With Keep-It you can just 'hit' New Snapshot, and all your current work is saved (snapped, recorded, maintained!). If you decide after a bit of 'hacking' you want to go back five minutes, then you can just drag out the last desired revision, or restore the whole snapshot (if you've changed multiple related files). Keep-It is very light-weight.
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What are newsgroups? Are they are a useful source of information?

Frequently Asked Questions - The Yamasa Institute
excellent source of information about Japan and its language can be found in the newsgroups. Newsgroups are a form of bulletin board, and basically consist of "written conversations" conducted over a period of time ranging from a couple of hours to in some cases a week or two.
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How powerful should my telescope be?

Howstuffworks "How Telescopes Work"
This consideration is perhaps the most misleading to novice telescope buyers. Often, manufacturers of "cheap, department store" telescopes will display "200x power or more" on the boxes of their products. The magnification or power has little to do with the optical performance of the telescope, and is not a primary consideration.
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How do I make a light switch?

Return to Castle Wolfenstein: nib's Mapper Resource Center
So you've gone through the basic tutorials on making a room and you understand the concepts, right? Good. Now its time to let you in on a little secret. That's not the right way to make a room! Nope. Hate to break it to you, but making a room properly requires a bit more work, but is very easy once you get familiar with the editor. Most tuts are quick to have you use Hollow to make a room, that's not good, unless you know how to fix what Hollow gives you.
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What is the light bar switch for?

Ford Mustang Parts & Performance - American Muscle
The light bar switch allows you to turn off the light bar when your top is up. This keeps the light from reflecting off your rear window, into your rearview mirror and into your eyes. So, you're not blinded, and your drive is considerably safer.
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What type of light source does Light Corporation use in its fixtures?

Light Corporation FAQ: questions & answers about fluorescent...
Light Corporation specializes in fluorescent lighting. Fluorescent lighting is more energy efficient, runs cooler and has a longer lamp life than incandescent lighting. Fluorescent lamps not being a point source of light (the entire surface of the lamp emits light not just the filament inside the lamp) allows us to light the work surface more evenly than if we were using an incandescent source.
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Why should I buy from Your Light Source?

Your Light Source
Just these three reasons: - Our beautifully made lights - Our fair prices - Our outstanding customer service (just try us out!)
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What kind of light source is required?

TrakMate FAQ
You will have to provide a light source above the sensors. There are many ways you could do this. The easiest way is to use an ordinary lamp. Sometimes the ceiling light provides enough light. Small low voltage bulbs such as flashlight bulbs mounted above the track will also work. You want to set it up so your arm or hand doesn't block the light to the sensor during a race.
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What happens if a light source breaks?

mb-microtec trigalight?
Nothing! The tritium escapes and mixes with the ambient air. Thanks to its low density, the gas rises and thins down in the atmosphere. If possible, do not inhale the gas.
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Why can two colors match under one light source but not match under a different light source?

Frequently Asked Questions
This is a common color-matching problem and it is caused by Metamerism. Because colors can be created by using different mixtures of pigments and dyes, the combination of dyes or pigments used will determine how well colors match under different light sources. The greatest effect of metamerism can be seen when viewing a sample under a predominantly Blue source (e.g., D65) and a predominantly Red/Yellow source (e.g., Illuminant A). If the same dyes are used, no metamerism should be seen.
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Why is Green Tea extract such a powerful source of antioxidants?

Mega® Dietary Supplements
Because the specific type of antioxidants found in Green Tea, namely catechins, are very strong and even more powerful than vitamins A, C, E and beta-carotene at fighting harmful free radicals. These powerful catechins also protect DNA. Yes, but in lesser amounts than coffee. For instance, a six-ounce cup of Green Tea contains about 30 mg. of caffeine, while there are about 100 mg. of caffeine in six ounces of coffee.
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You see how POWERFUL this system is?

GoGetCash - Frequently Asked Questions (FAQs) and their Answ...
If you however want to get the ABSOLUTE best and fastest results from this system, then you can do this with MORE spots at a time. As each of the spots pay you when you move up, you simply SAVE your PROFIT and reinvest the remaining BACK into the system. This makes the system more interesting and ensures that you receive your payments quicker and easier because as you are doing this, others are equally doing the same thing-- so EVERYONE benefits and everyone continues to play this system.
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Is my computer powerful enough?

Public chat
You need at least a Pentium II with 125MB of memory (though we encourage more), high-speed internet access, and a webcam.
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There appears to be some sort of sensor/light right beside my headlight switch. What is this?

E46 FAQ by Kris Linqusit
It is a light sensor which effects how brightly the on board computer and radio lights are displayed. To test it out by getting in your car at night, starting it, turning on the headlights, then taking the flashlight out of the glove compartment and shining it at the sensor. The displays mentioned above should become much brighter.
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How do I know if the switchplates will fit my light switch?

Switchplates - Sassy Switches - Frequently Asked Questions
All light switches are basically standardized and our plates should work fine in your home. All of our plates are considered "mid sized" which is just slightly larger than a standard plate. This is an "upgraded plate" and is most useful when replacing existing light switch plates with new decorative ones since the older plates may leave a slight mark when removed.
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What's "the light"?

The alt.comedy.standup FAQ
At some point while you're on stage, someone will shine a light in your eyes. This is the owner's/manager's way of saying "Your time is over, wrap it up." You then have about a minute to get off the stage. Generally, the light is used to make sure a show runs smoothly and on time. However it can also be used to tell you that your performance bites or that the person with the light has a petty vendetta against you.
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What is an incandescent light source?

FAQs - Support
Incandescent light sources are electric bulbs with filaments. When electric energy is transformed into heat energy the temperature of the solid bodies are raised. The heated body gives off different levels of light according to the degree to which it has been heated. Halogen bulbs fall under this category.
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What light source should I choose?

Titanium Pro Optics
A fiberoptic headlight is a good choice because you get no extra heat or electro-magnetic radiation from a lamp at your head. It has a warm color and low voltage and an electronic dimming feature. Lamp exchange is easy and economical. Replacement bulbs are very reasonably priced at about $ 8.00. Heavy use requires 5-10 bulbs/year. Xenon lamps produce a cold and blue light, they run on high voltage. Xenon lamps can not be dimmed, but the output power can be reduced with an iris.
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What should I use for a light source?

General Hydroponics - Indoor Hydroponic Gardening, Hobby Gar...
Light is, of course, one of the principal requirements for plant growth in a hydroponic system. Most cultivated plants need sunlight. However, when you grow plants indoors, artificial light is usually necessary. The intensity of the light that you are going to use must be high but make sure that it does not increase the temperature. Fluorescent lights offer indoor plants a type of light most similar to sunlight.
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How do I build a sub-microsecond light source?

FAQ-Flash
This is the question that comes in most frequently. Our advice: don't try... unless you're an electrical engineer who knows what she's doing. The high voltages needed can be dangerous. Unfortunately, it's not easy to come by such light sources (common flash units like those from photo stores have around 20 microsecond durations at the shortest). So what do you do if you want to stop Mach 2 bullets in their tracks? If you're lucky, maybe you can pick up an EG&G microflash in surplus.
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How do I change a bulb on an X8000 light source?

Endoscopy - Endoscopy Services : Stryker
To change the bulb, power down the unit and open the bulb door. Rotate the handle on the module to the right, grasp the handle, and remove the bulb. Insert a new bulb module (Stryker part number 220-201-000) along the guide rails until it is fully seated on the mating connectors. Rotate the handle to the left to secure the bulb module within the light source. Close the bulb door and power on the unit.
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