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Category: What to buy?

15. March 20189. January 2019 Peter List What to buy?

How to choose the right light bulb? – Socket base

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14. March 20189. January 2019 Peter List What to buy?

How to choose the right light bulb? – Voltage

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13. March 20187. February 2019 Peter List What to buy?

What is led lamps?

The electrical component that produces light by the flow of electrical energy through a semiconductor is called a Light Emitting Diode- LED. <<<<Go back

12. March 20187. February 2019 Peter List What to buy?

What is halogen lamps?

The basic principle of generating light of halogen lamps is same as incandescent lamps; Thermal radiators. One problem with incandescent lamps is that as time passes, the glass bulb turns black due to the evaporation of the filament. The technology of preventing the blackening of the glass is the adding of halogens to the gas … Continue reading What is halogen lamps?

11. March 20187. February 2019 Peter List What to buy?

What is fluorescent?

Fluorescent lamps, so called energy saving lamps is one of the main discharge lamps which produce light by applying voltage between two electrodes located in a discharge tube filled with inert gases or metal vapours. <<<<Go back

10. March 20187. February 2019 Peter List What to buy?

What is incandescent?

“Incandescent light and sunlight are two golden standards of lighting.” The main components of an incandescent lamp are only a tungsten filament and a glass bulb. The filament glows when heated sufficiently by an electric current due to electrical resistance. Like other heating elements or the sun, it radiates a continuous spectrum with the result … Continue reading What is incandescent?

8. March 20187. February 2019 Peter List What to buy?

What are the most common lamps?

  Since Edison invented the light bulb, electric light has been constantly studied and new types of light sources have been developed. Among them, here are four types of light sources that are commonly used for home. 1. Incandescent lamps This is the first light bulb invented by Edison. Incandescent lamps are simply made of … Continue reading What are the most common lamps?

7. March 20186. February 2019 Peter List What to buy?

What is different depending on the type of lamp?

The development of electric lighting was made through the consideration of how electricity was used to create a safe and bright light. The method that has been invented so far can be roughly divided into three. The first is a thermal radiator method that converts heat into light, and the second is a discharge method … Continue reading What is different depending on the type of lamp?

6. March 20186. February 2019 Peter List Package, What to buy?

What is CRI?

Described in a scale from 0 to 100, Color Render Index (CRI) is the ability of the light source to reproduce the colors. Higher is the number, better is the color reproduction.  

5. March 20186. February 2019 Peter List How to use?, Package, What to buy?

What is Color Temperature?

Color Temperature or Correleted Color Temperature (CCT) is measured in Kelvin (K) and indicates whether a lamp has a warm or cool color appearance. The incandescent lamps are considered warm light sources, because they  have a low color temperature (2700K) and their color appearance is  more  the red/ orange/ yellow range. In the other hand, … Continue reading What is Color Temperature?

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“It´s new world of lighting. People have to think about it more than ever.

– Joseph Ray Barreau,
lighting designer and architect

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Lichtforum e.V.
Hirschgraben 30, 22089 Hamburg
040-69 21 21 40

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