Home > Virtual Collections > By Category > Light > low-energy-fluorescent-compac...   [-]
77GB+ of FREE images, sounds and more! (Exhibits: 36,200)
DHD Multimedia Gallery
[mirrors: home us uk]       [en_GB][de][es]
 
prev

Light

low-energy-fluorescent-compact-light-CFL-240V...

next
News: My Radbot project is fundraising. Come join us cut carbon emissions!

Thumbnail

Download small medium full - FREE to download and use! (c)
(Light): low energy fluorescent compact light CFL 240V AC 20W triple U tube in desk anglepoise lamp closeup 1 DHD.jpg
D= [Jun 1, 2007]; S=2MB, 3072x2304; T=JPEG image [MIME:image/jpeg].

Rating: 54/100.

Key: D= file date of exhibit; S= size in bytes, XxY pixels, etc; T= type of exhibit; L= location/time or viewpoint of exhibit (if known).

  • low energy = low power, high-efficiency, efficient, "green" = Typically LED or CFL, such "low-energy" lighting is many times more efficient (in terms of light output power for given input electrical power) than "standard" incandescent tungsten-filament bulbs, which of necessity must get very hot and generate a lot of heat.
  • low energy fluorescent = An electric current from the lamp's ballast flows through the gas (which includes toxic Mercury/Hg) contained in the tube of a fluorescent lamp, producing UV (ultraviolet) light which then excites a white phosphor coating on the inside of the tube, which in turn emits visible light.
  • low energy fluorescent compact = CFL, Compact Fluorescent Lamp

  • closeup = close-up/macro; tightly framed and imaged at a relatively large scale


Preview Index

light box(Hover over thumbnail for enlarged view.)
>>>
  • low ~ closeup 1 DHD.jpglow ~ closeup 1 DHD.jpg
  • low ~ closeup 2 DHD.jpglow ~ closeup 2 DHD.jpg

About This Category

Lights and lighting, natural and artificial/man-made...

Some Similar Exhibits

ThumbnailExhibit Name
Thumbnaillow energy fluorescent compact light CFL 12V DC twin tube on desk with copper crocodile clips closeup 1 DHD.jpg (Light)

  • low energy = low power, high-efficiency, efficient, "green"
  • low energy fluorescent compact = CFL, Compact Fluorescent Lamp

Thumbnaillow energy LED 5W cool white bulb 240V mains alongside 11W CFL warm white lights on domestic spotlight strip for comparison 1 DHD.jpg (Light)

  • low energy = low power, high-efficiency, efficient, "green"
  • low energy led = LEDs, Light Emitting Diode, Solid-State Lighting, SSL, LED light bulb, LED-leuchtmittel, LED-lampen, ampoule à LED, bombilla LED

LED lamp sourced from ultraleds.co.uk part number ES5X1CW. This seems to be the yellow-phosphor-over-blue-LED style of construction and gives a very bluish cold and 'ghostly'/icy light from very tight point sources. Not very comfortable, to we're going to try to get used to it. These photos don't give a sense of how cold the light colour is. The light output is however very good for a bulb with less than half the energy input of the adjacent CFL (compact fluorescent lamp) bulbs.

 


Metadata XML.

XHTML (mobile) — Catalog Page

Dec 10, 2019 You may wish to use the Reload/Refresh button on your browser to ensure that this page is up-to-date.
Site copyright (c) Damon Hart-Davis 1996-2013; exhibit content copyright of specified creator; see terms and conditions for use. Site sponsored by ExNet. Powered by Javatm, tuned with JProfilertm.0u 2ms-