Safety lamp

（重定向自Flame safety lamp）

Spedding mill at the German mining museum, Bochum, Northrhine-Westfalia, Germany

Early form of Stephenson lamp shown with a Davy lamp on the left

A safety lamp is any of several types of lamp that provides illumination in coal mines and is designed to operate in air that may contain coal dust or gases both of which are potentially flammable or explosive. Until the development of effective electric lamps in the early 1900s miners used flame lamps to provide illumination. Open flame lamps could ignite flammable gases which collected in mines, causing explosions and so safety lamps were developed to enclose the flame and prevent it from igniting the surrounding atmosphere. Flame safety lamps have been replaced in mining with sealed explosion-proof electric lights.

单词	Flame safety lamp
释义	Flame safety lamp 英语百科 Safety lamp （重定向自Flame safety lamp） A safety lamp is any of several types of lamp that provides illumination in coal mines and is designed to operate in air that may contain coal dust or gases both of which are potentially flammable or explosive. Until the development of effective electric lamps in the early 1900s miners used flame lamps to provide illumination. Open flame lamps could ignite flammable gases which collected in mines, causing explosions and so safety lamps were developed to enclose the flame and prevent it from igniting the surrounding atmosphere. Flame safety lamps have been replaced in mining with sealed explosion-proof electric lights.
随便看	Schaffner的意思 Schaffneria的意思 Schaffneria nigripes的意思 schaffneria nigripess的意思 schaffnerite的意思 schaffners的意思 schaffran的意思 schaffrath的意思 schaffs的意思 schafft的意思 schafskopf的意思 Schafstedt的意思 Schafstädt的意思 Schaft的意思 schaftoside的意思 schaft sinking的意思 schag的意思 Schagen的意思 schagh的意思 Schaghticoke的意思 schaghticokes的意思 schah的意思 schahriar的意思 Schaible的意思 schaie的意思