If the lamp is not operating you will see a yellow brown deposit inside the lamp in addition to a bead of mercury for Gallium lamps. For iron additives you need to look very closely but metal like "filings" are visible on the inside of the lamp. You can also tell lamp type by looking at the color of the light when operational. NOTE you should never look directly or indirectly at reflected lamp light, as it is DANGEROUS.

You need to ask your supplier of the UV material you are trying to cure. Ask them if additional UV energy in the 390nm or 420nm range will provide any benefit.

A metal halide lamp will enhance output in specific spectrums. If the material you are using is responsive to those additional spectrums you will see a benefit. Note that the power supply must be capable of supplying the correct operating voltage to initiate the arc and have the correct waveform to maintain the arc.

We are not appraisers. We recommend that you take your lamp to a high quality reputable antique shop and ask them to either appraise your heirloom or send you to someone who can. On a positive note. While in that antique shop look around. Find one that is close in both style and size to yours. You will probably be pleasantly surprised at what these old lamps are going for.

additive is an extraneous substance that is added to a substance in very small quantities to enhance the existing properties of the substance, to impart some desirable properties to the substance, or to supress certain properties.

LAMP is an electronic music library of classical and contemporary CDs that may be accessed across the MIT campus, including in student dormitory rooms and faculty offices. While at MIT, patrons can listen to CDs in the collection on demand, free of charge, over the MIT cable television system. We are using LAMP to research the effects of a more-accessible music library on education and music-listening behavior at MIT. More information is at http://lamp.mit.edu/.

LAMP is a joint project of the MIT Student Information Processing Board (Josh Mandel/Keith Winstein) and MIT Cable Television (Randy Winchester/Jon Ward). LAMP is generously supported by MIT iCampus (MIT/Microsoft Research) and StreetFire Sound Labs, and is supervised by Professor Hal Abelson.

The Plug: On newer table lamps, the prongs on the plug are different sizes. The larger prong is (should be) the neutral. The receptacle in the wall has different sized slots; the longer slot is (should be) the neutral. For safety, the plug should fit in only one way. The cord: If you rub your fingers along the two sides of the cord, one should be smooth while the other has little ridges. The ridges are (should be) on the neutral wire side.

Ans: Packages are pre measured for 1 Gal, 2 Gal and 5 Gallons of paint. Money saving bulk packaging is available also. You can figure on an average coverage rate of 250-300 sq. ft. per gallon for most house paints on smooth surfaces.

Technically, a color additive is any dye, pigment or substance that can impart color when added or applied to a food, drug, cosmetic or to the human body. The Food and Drug Administration (FDA) is responsible for regulating all color additives used in the United States. All color additives permitted for use in foods are classified as "certifiable" or "exempt from certification" (see Table I).

A bowed lamp should be replaced immediately along with evaluation of the lamp cooling system. This condition is a direct result of improper lamp cooling. The lamp must be controlled where the surface temperature is between 600 - 800 degrees C. If the air around the lamp is not properly controlled, this temperature will rise causing the quartz tube to soften and lose its rigidity. Adjust the cooling and airflow around the lamp to reduce the temperature of the lamp body.

Discoloration can occur for several reasons. There is natural "blackening" of the quartz tube at each end during the life of the lamp. This is the result of the electrode material depositing on the inside of the tube during its use. Discoloration of the quartz will occur over time due to natural solarization or "clouding" of the quartz. This occurs as the quartz reverts to its natural crystalline structure, which is opaque to ultraviolet energy.

Customers which reside in countries that use 220v will receive a 220v power supply unless otherwise requested.

A high efficiency lamp utilizing an electric discharge through low pressure mercury vapor to produce ultra-violet (UV) energy. The UV excites phosphor materials applied as a thin layer on the inside of a glass tube which makes up the structure of the lamp. The phosphors transform the UV to visible lights.

watts is the maximum power recommended for your modeling lamp. This allows the cooling fan to maintain low internal temperatures. It is possible to use a 250-watt quartz lamp if particular care is taken. As a 250-watt bulb produces more heat, you should not operate your flash unit for extended periods of time with this bulb in place. You will need to be cautious when using this bulb, ensuring that there is adequate airflow.

Ans: Complete instructions are included with every order. The ceramics are a very fine powder and blend into paint quite easily with a simple stirring using a paint paddle. The addition of ceramics to your paint will thicken it slightly and you may have to add a little water ( up to 1 pint ) to bring the paint back to a useable consistency. We recommend thinning with our Acriflow, the latex paint reducer/enhancer that turns any paint into a "Super Paint".

The projector and the lamp are co-dependents. The cleaner and cooler the projector is, the longer the lamp will last. By regularly cleaning the filters (every 3 months) and ensuring the projector isn't unplugged before the cooling cycle has completed, you will have given your lamp every chance for a long, fulfilling life. The 2000-3000 lamp-life hours that ALL manufacturers publish is under lab conditions.

R" lamp is a "Reflector" lamp. Most high-hats or recessed fixtures require "R" lamps to get the most efficient lighting. The reason is simple, any light that doesn't go straight down is wasted light Reflector lamps reflect the majority of the lighting down where you want it. Although some recessed fixtures can use "A" lamps (standard light bulbs) you have to lower the wattage due to heat build up and waste energy.