Thomas Midgley,US inventor

Numéro d’image : 11830077
Thomas Midgley,US inventor
Thomas Midgley. Portrait of the American inventor Thomas Midgley (1889-1944). Working for Delco in World War I,he led a team working on 'knocking' in petrol engines. He found that tetra-ethyl lead (when used with 1,2-dibromo-ethane to reduce lead oxide deposits in the engine) is highly effective at reducing knocking when added to petrol. The mixture is still used as an anti-knock additive today. Midgley devised the octane number method of rating petrol quality. In 1930 he introduced Freon 12 as a non-toxic non-flammable agent for domestic refrigerators. Both Freon and his lead- based anti-knock compound have since been shown to harm the environment
Licence : Droits gérés
Crédit: Science Photo Library
Taille de l’image : 3732 px × 4795 px
Model Release : Le droit n'est pas encore disponible. Merci de nous contacter avant utilisation.
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

;