Professor Stephen Hawking‚ 68‚ is a theoretical physicist and cosmologist. He studied physics at Oxford‚ went on to do research at Cambridge and was the Lucasian professor of mathematics at Cambridge for 30 years. His books include A Brief History Of Time (1988)‚ The Universe In A Nutshell (2001) and The Grand Design‚ published this month. Professor Brian Cox‚ 42‚ is a physicist and broadcaster. While studying at Manchester University‚ where he is now a research fellow‚ he joined the pop group D:Ream
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Today I will introduce a famous and outstanding scientist to you. A brief history of Stephen Hawking. The main contents include four aspects Stephen William Hawking is an English theoretical physicist and cosmologist‚ whose scientific books and public appearances have made him an academic celebrity. Stephen William Hawking was born on 8 January 1942 (300 years after the death of Galileo) in Oxford‚ England. His parents’ house was in north London‚ but during the Second World War Oxford was considered
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TOOLBOX TALK Location: Date: Conducted by: JESS IBON (Safety Officer) SAFE WORKING DAY = ACCIDENT-FREE DAY! EVERYONE GOES HOME SAFELY! EYE PROTECTION Objective: To let the workers fully understand that loss of eyesight or damage to the eyes can lead to irreversible negative effect to their families and loved ones. To give some safety tips or first aid procedure in the event of eye-related incidents or accidents. (Note to discussion leader: Bring some kind of eye protective
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or rather‚ to be slightly more accurate‚ he has redefined the term to enable him realistically to examine and predict the future of science and technologies‚ from teleportation and time travel to robots and starships. Michio Kaku is an esteemed theoretical physicist and one of the world’s leading authorities on string theory (essentially an attempt to discover a "theory of everything" combining all of the known physical forces)‚ and he also specialises in future science‚ having presented several television
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Using a Compound Light Microscope Purpose: The purpose of this lab is to 1. Learn the parts of a compound light microscope. 2. The functions of those parts. 3. Proper use and care of the microscope. 4. Learn the technique of preparing wet-mount slides. Materials: * Compound light microscope * Soft cloth * Microscope slide * Cover slip * Dropper * Scissors * Newspaper Procedures: Part A. Care of the Compound Light Microscope. Step 1: Always carry
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object such as virus Objective lens and eyepiece magnifying image Types: light microscope‚ electron microscope (Magnifying glass) [pic] Limited magnifying power-10 to 15 times Use to see small objects Magnifying glass is convex lens (Telescope) [pic] Viewing distant object: stars‚ moon‚ planet Consists of two convex lens- objective and eyepiece lens The image produced by the objective lens magnified by the eyepiece lens (Binoculars)
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for the plant to be located. The design of the distillation column consists of the packed type. The distillation is a multi-component distillation involving separation of Propane from the other components at very high pressure. The number of theoretical stages chosen was 16 stages based on a reflux ratio of 0.608. The column diameter calculated was 0.61 at maximum pressure gradient possible for distillation columns and 0.66m for minimum pressure gradient‚ which was then scaled up to 0.65m. This
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his telescope as a concave telescope‚ because it has a lens with inward curving surfaces. Till 1611 Johannes Kepler switched the concave eyepiece to a convex eyepiece. This allowed the telescope to gain a much larger range of distance. (http://www.antiquetelescopes.org/history.html)It also allowed the projection of images on to a flat white screen. The only problem was that the images were upside down‚ Johannes Kepler added a third convex lens to make the images the right side way. Even though
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|Compound Microscope Parts | |[pic] | |A high power or compound microscope achieves higher levels of magnification than a stereo or low power microscope. It is used to view smaller | |specimens such as cell structures which cannot be seen at lower
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(refracting) called the “looker” by aligning a concave and a convex lens inside a metal tube. The convex lens refracted light to a specific point on the concave eyepiece making distant objects look magnified. When Galileo heard about the ’looker’‚ he decided to improveupon its design. Galileo called his model the ’telescope’. In his first attempt‚ Galileo built a three-power instrument containing a convex and a concave lens in 1609. He was more successful in further attempts to magnify objects
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