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Durham Coal Mining 3 of 5 Postcards Of The Durham Coalfield
 
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Vintage post card views of The Durham Coalfield including many rare views of collieries including: Auckland Park, Boldon, Brancepeth, Busty Pit Pelton, Chilton, Chopwell, Dean & Chapter Ferryhill, Derwent Rescue Team, Durham Big Meeting, Easington, Felling, Fishburn, Hamsterley, Horden, Mainsforth, Morrison, Murton, Ryhope, Seaham, Southmoor, Trimdon Grange, Trimdon, West Stanley, West Tees Ramshaw, Wheatley Hill, Willington, Wingate.
Views: 3661 Durham Telly
Safety lamp
 
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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. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
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Humphry Davy | Wikipedia audio article
 
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This is an audio version of the Wikipedia Article: Humphry Davy 00:01:17 1 Education, apprenticeship and poetry 00:06:11 2 Early scientific interests 00:08:40 3 Pneumatic Institution 00:15:23 4 Royal Institution 00:19:14 4.1 Discovery of new elements 00:20:03 4.2 Discovery of calcium, magnesium, strontium and barium 00:21:34 4.3 Discovery of chlorine 00:22:26 4.4 Laboratory accident 00:23:21 4.5 European travels 00:26:36 4.6 Davy lamp 00:28:46 4.7 Acid-base studies 00:29:22 5 Herculaneum papyri 00:30:59 6 Electrochemical protection of ships' copper bottoms 00:32:46 7 President of the Royal Society 00:36:06 8 Last years and death 00:38:55 9 Honours 00:39:04 9.1 Geographical locations 00:40:32 9.2 Scientific and literary recognition 00:41:20 10 In popular culture 00:42:40 11 Publications Listening is a more natural way of learning, when compared to reading. Written language only began at around 3200 BC, but spoken language has existed long ago. Learning by listening is a great way to: - increases imagination and understanding - improves your listening skills - improves your own spoken accent - learn while on the move - reduce eye strain Now learn the vast amount of general knowledge available on Wikipedia through audio (audio article). You could even learn subconsciously by playing the audio while you are sleeping! If you are planning to listen a lot, you could try using a bone conduction headphone, or a standard speaker instead of an earphone. You can find other Wikipedia audio articles too at: https://www.youtube.com/channel/UCuKfABj2eGyjH3ntPxp4YeQ You can upload your own Wikipedia articles through: https://github.com/nodef/wikipedia-tts "The only true wisdom is in knowing you know nothing." - Socrates SUMMARY ======= Sir Humphry Davy, 1st Baronet (17 December 1778 – 29 May 1829) was a Cornish chemist and inventor, who is best remembered today for isolating, using electricity, a series of elements for the first time: potassium and sodium in 1807 and calcium, strontium, barium, magnesium and boron the following year, as well as discovering the elemental nature of chlorine and iodine. He also studied the forces involved in these separations, inventing the new field of electrochemistry. In 1799 Davy experimented with nitrous oxide and became astonished that it made him laugh, so he nicknamed it "laughing gas", and wrote about its potential anaesthetic properties in relieving pain during surgery.Berzelius called Davy's 1806 Bakerian Lecture On Some Chemical Agencies of Electricity "one of the best memoirs which has ever enriched the theory of chemistry." Davy was a baronet, President of the Royal Society (PRS), Member of the Royal Irish Academy (MRIA), and Fellow of the Geological Society (FGS). He also invented the Davy lamp and a very early form of incandescent light bulb. He joked that his assistant Michael Faraday was his greatest discovery.
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