The white light emitted by a fluorescent lamp is provided by the?
A) phosphors on the inner surface of the lamp.
B) mercury vapor in the lamp.
C) filtering effect of the glass tubing.
D) high temperature of the glowing
B) mercury vapor in the lamp.
A fluorescent lamp or fluorescent tube is a gas-discharge lamp that uses electricity to excite mercury vapor. The excited mercury atoms produce short-wave ultraviolet light that then causes a phosphor to fluoresce, producing visible light. A fluorescent lamp converts electrical power into useful light more efficiently than an incandescent lamp. Lower energy cost typically offsets the higher initial cost of the lamp. The lamp is more costly because it requires a ballast to regulate the current through the lamp
http://en.wikipedia.org/wiki/Fluorescent_lamp
Fluorescent lamps
|
|
10 PCS LED LIGHTING LENS MODULE STRING 12 VOLTS DC FLUORESCENT LAMP REPLACEMENT $25.99 |
|
|
Zoo Med ReptiSun 10.0 Compact Fluorescent Lamp – NEW $34.95 |
|
|
4W MR16 4 LED Spot Light Bulb Lamp Flat Fluorescent Pure White 12V 360LM $3.85 |
|
|
NEW 2×2 Troffer 2 32w T8 U-Lamps Ea. Fluorescent Fixtures-Decor PET2U3R8 $68.06 |
|
|
Lot of 10 FS-2 Starters for 14, 15 & 20 Watt Fluorescent Lamps $15.00 |
|
|
AC 220V Electronic Ballast for 2 x 40W Fluorescent Lamp $14.34 |
|
|
32W Ring Tube Fluorescent Lamp Electronic Ballast AC 220V 0.16A $7.38 |
|
|
Strip Light Lamp Fluorescent Garage Log Cabin Shed Home Car Van Caravan 12V New $11.23 |
|
|
On-Off-Door Switch Car Roof Wht Light Fluorescent Lamp $11.70 |
|
|
New Kanlux T4 8W,12W,16W, 20W 4000K Linear Fluorescent Tube Lamp Light Bulb $6.98 |
|
|
New Kanlux T4 8W,12W,16W, 20W 4000K Linear Fluorescent Tube Lamp Light Bulb $7.14 |
|
|
New Kanlux T4 8W,12W,16W, 20W 4000K Linear Fluorescent Tube Lamp Light Bulb $7.45 |
|
|
New Kanlux T4 8W,12W,16W, 20W 4000K Linear Fluorescent Tube Lamp Light Bulb $7.76 |
|
|
Wholesale10 X T5 Integrated LED fluorescent lamps 5/8/15W $93.10 |
|
|
Wholesale10 X T5 Integrated LED fluorescent lamps 5/8/15W $156.75 |
|
|
Wholesale10 X T5 Integrated LED fluorescent lamps 5/8/15W $204.25 |
|
|
Wholesale10 X T5 Integrated LED fluorescent lamps 5/8/15W $273.60 |
|
|
4 x 4-65 Watt Fluorescent Lamp Light Starters FS-U 220-240V $3.76 |
|
|
Philips PL-C 26Watt 27 Fluorescent Bulbs 2 pin 3 Lamp pack $7.75 |
|
|
4pcs 7W E27 LED Lamp Bulb White Light 85-260V Brightness Instead 40W Fluorescent $9.90 |
|
|
10 x 32 Watt GE Fluorescent Lamp Starters New In Box Vintage $14.77 |
|
|
4pcs 7W E27 LED Lamp Bulb White Light 85-260V Brightness Instead 40W Fluorescent $18.90 |
|
|
PHILIPS 5 WATT 2-PIN TWIN TUBE COMPACT FLUORESCENT LAMP $14.62 |
|
|
Rig-A-Lite XP Explosion Proof/Hazardous Lighting 4-Lamp Fluorescent Fixture $850.00 |
|
|
ARROW HART FLUORESCENT LAMP STARTERS FS-4 (8 PER BOX) $12.00 |
|
|
NEW WAVE T5 24 FLUORESCENT 2FT/4LAMP W/BULBS $145.95 |
|
|
4pcs 7W E27 LED Lamp Bulb Warm Light 85-260V Brightness Instead 40W Fluorescent $9.95 |
|
|
LEVITON FLUORESCENT LAMP STARTERS FS-2 $5.00 |
|
|
4pcs 7W E27 LED Lamp Bulb White Light 85-260V Brightness Instead 40W Fluorescent $18.88 |
|
|
Neolux 2 Pin 16W 2D Compact Fluorescent Lamp Bulb Light- New $7.76 |
|
|
5) Sylvania Dulux S/E 5W Compact Fluorescent Lamp Bulbs $17.50 |
|
|
Sylvania 660W 250V Fluorescent Lamp Holder $3.74 |
|
|
4pcs 7W E27 LED Lamp Bulb Warm Light 85-260V Brightness Instead 40W Fluorescent $9.95 |
|
|
Leviton 660W 600V White Fluorescent Lamp Holder $3.74 |
|
|
4pcs 7W E27 LED Lamp Bulb White Light 85-260V Brightness Instead 40W Fluorescent $18.90 |
|
|
New, General Electric Biax D 18watt Compact Fluorescent Lamp lot of 3 (S0B) $15.99 |
|
|
4x 7W E27 LED Lamp Bulb White Light AC85-260V equivalent to 40W Fluorescent $22.99 |
|
|
New, General Electric Biax D 13watt Compact Fluorescent Lamp lot of 6 (S0B) $19.99 |
|
|
4pcs 7W E27 LED Lamp Bulb White Light 85-260V Brightness Instead 40W Fluorescent $9.90 |
|
|
Philips PL-C 26Watt 27 Fluorescent Bulbs 2 pin Set 3 Lamp pack Kit $7.98 |
|
|
Earthmate EP2352AK 23-Watt Super Mini-Spiral CFL 2700K Bulb, 6 Pack $39.50 … |
|
|
Earthmate EP4052AE 40-Watt Spiral CFL 2700K Bulb, 6 Pack $62.94 … |
|
|
Earthmate EP3057AE 30-Watt Spiral CFL Full Spectrum Bulb, 6 Pack $81.47 … |
|
|
All-Glass Aquarium Black 24 Fluorescent Strip Lite $29.45 Replacement light for Versa-Hood or Full Hood, or it can be used wherever extra lighting is needed.Features internally mounted ballast with instant-start circuit that allows you to operate on a timer or switch-controlled outlet…. |
|
|
Cool Lights: DIY Fluorescent Video Lighting Vol. 1 $89.00 Making video is a pleasure in a cooler studio but you can only do that with Cool Lights. This DVD video shows you how to make and use your own professional level fluorescent studio lighting for video, film and photography use. Start with simple, off-the-shelf solutions and progress to more complex, build-it-yourself ones that allow more control. Host Richard Andrewski dispels the conventional wi… |
|
|
GE 13-Watt Energy SmartTM – 8 Pack – 60 watt replacement $7.95 GE 13-Watt Energy SmartTM – 8 Pack – 60 watt replacement… |
|
|
Philips 409904 / 423343 Dimmable AmbientLED 12.5-Watt A19 Light Bulb $16.85 Philips AmbientLED (TM) Dimmable 60W Replacement A19 LED Light Bulb – Soft Warm White Philips AmbientLED (TM) Dimmable 12.5W A19 LED light bulb has earn Energy Star (R) qualification and offers light quality comparable to that of traditional general incandescent 60W light bulb. A19 emits light in all directions and are commonly used in table and floor lamps, pendants, ceiling fixtures and general… |
|
|
27W Replacement Bulb for Sunlight Lamp $6.00 Bring the sunlight back to your Sunlight lamp with this 27W Tube Bulb! Save$$$$ on your electric bills! The high-tech 27-wattbulb, with a C.R.I.(Color Rendering Index) of 80-85, gives as muchlight as an ordinary 150-watt bulb, but uses far less energy. The bulb can last up to 5000 hours, 5x longer than other bulbs- for years ofnormal use. What is the KELVIN Temperature? The Kelvin temperature is … |
|
|
27 Watt SAD Sun Light Therapy Lamp Replacement Bulb $4.50 A 27 Watt SAD Sun Light Therapy Lamp Replacement Bulb for SAD Sunlight desk/ floor lamps. Gives natural soft light that good for eyes, best for reading and giving warm light to your house…. |
|
|
Panasonic PANASONIC FDS18E35/4 REPLACEMENT LAMP $4.86 THIS PANASONIC FDS18E35/4 REPLACEMENT LAMP IS A T4 TRI-PHOSPHOR 4-PIN PLUG-IN COMPACT FLUORESCENT LAMP (CFL) IN A QUAD TUBE DESIGN FEATURES DURABLE, HIGH-QUALITY COMPONENTS AND ADVANCED TECHNOLOGY FOR OUTSTANDING PERFORMANCE. AS A RESULT, THIS LIGHT BULB OFFERS A NUMBER OF SIGNIFICANT ADVANTAGES OVER INCANDESCENT BULBS: IT CONSUMES UP TO 70% LESS ENERGY, GENERATES LESS HEAT AND FEATURES A 10,000-H… |