Energy-saving light bulb

Numéro d’image : 11892566
Energy-saving light bulb
Energy-saving light bulb switched off. This is a form of fluorescent lighting. The light bulb consists of three tubes. Each tube has an electrode at each end,an inner coating of phosphor and is filled with an inert gas,usually argon,and mercury vapour. When the light is switched on a stream of electrons flow through the gas from one electrode to the other,exciting the mercury atoms. As the mercury atoms move back to the unexcited state they give off ultraviolet photons. These hit the bulb's phosphor coating creating visible light. Fluorescent bulbs produce less heat than filament bulbs,therefore more of the electrical energy is converted to light,making them more efficient
Licence : Droits gérés
Crédit: Science Photo Library / Horrell, Steve
Taille de l’image : 5253 px × 5218 px
Model Release : Non requis
Property Release : Non requis
Restrictions : -

Prix pour cette image À partir de 45 €

Produit vendu
(Calendrier, Carte postale, Carte de vœux, Impression sur textile, Packaging etc)
À partir de 45 €
Usage commercial
(Affichage, Annonce presse, Annonce TV, Carte, Digital - hors rés. sociaux, Digital - rés. sociaux etc)
À partir de 45 €
Éditorial
(Digital, Journal, Livre, Livre pratique, Magazine, Télévision etc)
À partir de 60 €
Usage non-commercial
(Digital - hors rés. sociaux, Digital - rés. sociaux etc)
À partir de 120 €

Mots clés

;