Tag Archives: lighting

Alphabet Photography Project: L is for Light…

LED Filament Lamp…And, particularly, the light emitting diode, or LED, the marvel that is causing a revolution in all kinds of lighting. Homes, offices, shops, factories, car parks and many more situations are benefiting from the long life and amazing energy savings that this technology brings. Although commercial use of electro-luminescence is not new, The white LED as we know it has only been around for around twenty years – and was prohibitively expensive, to begin with.
The LED lamp in this picture is of the so-called ‘LED filament’ type, and at first glance resembles the first electric lamps made by Joseph Swan and Thomas Edison. The background looks black because the exposure has been optimised for clear portrayal of the LED filaments inside the outer bulb. In use, however, when inside a shade, it’s hard to tell the difference, in terms of light quality and colour appearance, between these lamps and traditional tungsten lamps – but they use around 10% of the energy!
Oh, and another key feature: at switch-on, full output from an LED lamp is virtually instant, in contrast with some types of fluorescent lamp, which leave you in the gloom for around a minute after starting, giving you plenty of opportunity to trip over some discarded toys, or whatever!
Mr Swan’s invention has done us well, for almost 140 years. Now, it’s time to move on.

It's kind to share!
facebooktwittergoogle_pluspinterest

The Gallery: Week 76 – Home

Ever since earliest times, one important feature of a home has been the provision of artificial light.  Indeed, the progressive development of domestic lighting makes a fascinating study, from the firebrand to the light-emitting diode.  In particular, recent advancements in small ‘compact fluorescent’ lamps have enabled the conversion of electrical energy into light without wasting so much as heat, as had already been achieved with larger linear fluorescent lamps.  At the same time, advances in phosphors used in these lamps mean that the colour appearance of the light given out is much pleasanter than that of the so-called ‘white’ fluorescent lighting that has been in common use for many years.

So now, your chosen ‘table lamp’ can give a friendly light, yet be energy efficient too.  Here is a favourite of mine.

It's kind to share!
facebooktwittergoogle_pluspinterest