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2. Sodium-vapor lamp - Wikipedia

   en.wikipedia.org/wiki/Sodium-vapor_lamp

   A sodium-vapor lamp is a gas-discharge lamp that uses sodium in an excited state to produce light at a characteristic wavelength near 589 nm . Two varieties of such lamps exist: low pressure and high pressure. Low-pressure sodium lamps are highly efficient electrical light sources, but their yellow light restricts applications to outdoor ...

3. Fluorescent lamp - Wikipedia

   en.wikipedia.org/wiki/Fluorescent_lamp

   A fluorescent lamp, or fluorescent tube, is a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. An electric current in the gas excites mercury vapor, which produces short-wave ultraviolet light that then causes a phosphor coating on the inside of the lamp to glow.

4. Excimer lamp - Wikipedia

   en.wikipedia.org/wiki/Excimer_lamp

   Excimer lamps are quasimonochromatic light sources operating over a wide range of wavelengths in the ultraviolet (UV) and vacuum ultraviolet (VUV) spectral regions. Operation of an excimer lamp is based on the formation of excited dimers (), which spontaneously transiting from the excited state to the ground state result in the emission of UV photons.

5. 6 simple ways to save money on your prescriptions — without ...

   www.aol.com/finance/save-money-prescription...

   As you wait for prescription drug costs to come down from the clouds, here's how you can save money on the medications you need. 1. Use a coupon program. If you don't have insurance, a ...

6. Mercury-vapor lamp - Wikipedia

   en.wikipedia.org/wiki/Mercury-vapor_lamp

   A closeup of a 175- W mercury vapor lamp. The small diagonal cylinder at the bottom of the arc tube is a resistor which supplies current to the starter electrode. A mercury-vapor lamp is a gas-discharge lamp that uses an electric arc through vaporized mercury to produce light. [ 1] The arc discharge is generally confined to a small fused quartz ...

7. Handel Company - Wikipedia

   en.wikipedia.org/wiki/Handel_Company

   It was formed in Meriden, Connecticut, and over the years produced lamps and glass designs. The company was incorporated in 1903. As of c. 1911, P. J. Handel was president and treasurer of the business. In Meriden Illustrated (c. 1911), " [The company has] obtained [a] national reputation for the artistic and the high quality of their product.