Lamp Fluorescent Minerals
 |
No items matching your keywords were found.
Lamp Fluorescent Minerals
How to remove the fluorescent coating from lamps?
I assume it is made of some mineral salts that could be removed by chemical action where polishing cannot reach.
The white fluorescent coating is on the inside. It is usually a mixture of lanthanide (Eu and Tb) oxides; different oxides fluoresce in different colors, so a mix is used to give white light. The coating can probably be dissolved by concentrated acids (sulfuric and/or nitric, maybe hydrochloric?).
The coating is probably toxic to some extent, and the glass may also contain traces of mercury. Use of concentrated acid is extremely dangerous. If you only want the lamp (bulb) as an interesting shape, it might be easier and safer to simply blow regular glass into the shape you want.
|
No items matching your keywords were found.
| | World of Fluorescent Minerals $45.98 This survey of different fluorescent minerals found around the world is meant for collectors and general readers. It includes many color photos showing what they look like in daylight and under an ultraviolet lamp. Schneider aims to incorporate worldwide minerals while still emphasizing the importance of New Jersey`s environment, which has more minerals than any other comparable place in the world. He provides information on specific types and how to find them, followed by a lengthy gallery of minerals in Franklin Mine, Sterling Mine, and the rest of New Jersey; different parts of the US; Canada; Mexico; and other countries. A value guide is included. Schneider is a writer, attorney, and fluorescent mineral collector, as well as a former professional photographer. Annotation )2007 Book News, Inc., Portland, OR (booknews.com) |
| | Alteka Silver Fluorescent Desk Lamp $106 -Fluorescent |
| | Alteka Silver Fluorescent Floor Lamp $119 -Fluorescent |
| | Alteka Black Fluorescent Desk Lamp $106 -Fluorescent |
| | Alteka Black Fluorescent Floor Lamp $119 -Fluorescent |
| | Minerals $12.49 Minerals |
| | Collecting Fluorescent Minerals $24.98 No Synopsis Available |
| | Fluorescent Lamp $105.14 Fluorescent Lamp. GasDischarge Lamp, Incandescent Light Bulb, Compact Fluorescent Lamp, Color Rendering Index, Color Temperature, Fluorescent Lamp Recycling, List of Light Sources, MercuryVapor Lamp, Germicidal Lamp, SodiumVapor Lamp, Fluorescence, Sir George Stokes, 1st Baronet, Michael Faraday, Sprengel pump, Article Sources and Contributors, Image Sources, Licenses and Contributors Author: Miller, Frederic P./ Vandome, Agnes F./ McBrewster, John Binding Type: Paperback Number of Pages: 146 Publication Date: 2009/11/03 Language: English Dimensions: 5.98 x 9.01 x 0.33 inches |
| | Fluorescent Desk Lamp, Black, Fluorescent Tube T5/13W(6400K) $103 Fluorescent Desk Lamp, Black, Fluorescent Tube T5/13W(6400K) |
| | Fluorescent Desk Lamp, Silver, Fluorescent Tube T5/13W(6400K) $103 Fluorescent Desk Lamp, Silver, Fluorescent Tube T5/13W(6400K) |
| | Fluorescent Desk Lamp, Chrome/Black, Fluorescent Pl/13W(6500K) $95 Fluorescent Desk Lamp, Chrome/Black, Fluorescent Pl/13W(6500K) |
| | Fluorescent Desk Lamp, Chrome/Blue, Fluorescent Pl/13W(6500K) $95 Fluorescent Desk Lamp, Chrome/Blue, Fluorescent Pl/13W(6500K) |
| | Fluorescent Desk Lamp, Chrome/Silver, Fluorescent Pl/13W(6500K) $95 Fluorescent Desk Lamp, Chrome/Silver, Fluorescent Pl/13W(6500K) |
| | Fluorescent Desk Lamp, Chrome/White, Fluorescent Pl/13W(6500K) $95 Fluorescent Desk Lamp, Chrome/White, Fluorescent Pl/13W(6500K) |
| | Fluorescent Floor Lamp, Black, Fluorescent Tube T5/13W(6400K) $93.6 Fluorescent Floor Lamp, Black, Fluorescent Tube T5/13W(6400K) |
| | Fluorescent Floor Lamp, Silver, Fluorescent Tube T5/13W(6400K) $93.6 Fluorescent Floor Lamp, Silver, Fluorescent Tube T5/13W(6400K) |
| | PL Fluorescent Floor Lamp $119 -Sleek and contemporary, this fluorescent floor lamp displays a sleek chrome finish and metal shade. -Please note the bulb is included. |
| Account limit of 2098 requests per hour exceeded. |
36wattdemo.AVI
Don't know how to start?
A fluorescent mineral absorbs 'black light' from a mercury lamp. It then emits visible light with a wavelength 520 nm. The energy not converted to light is converted into heat. If the mineral has absorbed energ with a wavelength of 320 nm, how much energy (in kJ/mole) was converted to heat?
Energy of light is given by the equation E = nhf
E denotes energy, whilst n is the number of photons, h is the Planck's constant and f is the frequency. Frequency can also be taken as the reciprocal of wavelength.
Thus, energy absorbed = energy as light + energy as heat.
Energy absorbed E = nh( 1 / 320 x 10^-9)
where h = 6.63 x 10^-34 and n = 1 x 6.02 x 10^23
Hence E = 0.0012473 J per mole
Energy given off as light E = nh( 1 / 520 x 10^-9)
where h = 6.63 x 10^-34 and n = 1 x 6.02 x 10^23
Hence E = 7.6755 x 10^-4 J per mole
Taking the first value minus the second, we have energy converted to heat = 4.7972 x 10^-4 J per mole. This can be translated ino 4.7972 x 10^-7 kJ per mole
Hope I was of help!
<3, phantasmal.spirit
Filed under: Britains Toys