know how to operate the machine before switching it on. Machine guards must be put in position while operating. Keep hands away from any rotating objects. Cutters being used should be correctly ground and in good condition. Use correct cutting speed‚ feed rate and depth of cut from time to time. Spilled oil or cutting fluid on the floor must be wiped up immediately. Never leave any running machine unattended. COSHH- Control of substances hazardous to health‚ when using a milling machine all
Premium Milling machine Machining
The theory of relativity came from Einstein’s search for a general law of nature that would explain a problem that had occurred to him when he was sixteen. "No matter what speed the observer is moving at‚ he must always observe the same velocity of light‚ also that if an observer at rest and an observer moving at constant speed carry out the same kind of experiment‚ they must get the same result"(Albert Einstein Biography). By using the theory‚ he changed the way how people only believed in Newton’s
Premium Nuclear weapon Albert Einstein Special relativity
street was crowded with cars‚ vans‚ busses and even motorcycle waiting to pick up the children after school. They parked haphazardly along the street make it difficult for people to cross the street. Other vehicles were speeding along even there was speed limit sign. Suddenly‚ I saw a young boy who was running quickly without looking to the left or to the right to cross the street. The vehicles honked mercilessly on the street. Unfortunately‚ a motorcycle hit the unlucky young boy. The boy was flung
Premium English-language films Speed limit Eye
we petition the Louisiana State Department of Transportation to put a timed red light at this intersection. An alternate‚ but still effective means of traffic control would be to put in a four way stop at this intersection. Finally‚ a reduction of speed limited around the intersection to about twenty or thirty miles per hour would reduce the chance for serve traffic accidents‚ according to the statistics. The first proposal I make to improve this intersection for the community is to have a red light
Premium Road Miles per hour Time
WEDNESDAY‚ March 13 (HealthDay News) -- More than half of all teens and young adults in the United States know a victim of dating violence or sexual assault‚ according to a new national survey. But 53 percent would find it difficult to intervene‚ and 40 percent wouldn’t even know what to do if they witnessed such a crime‚ the poll found. The survey "uncovers the grim reality of dating violence and sexual assault among 15 to 22 year olds‚ and the fact that so many are uncertain about the warning signs
Premium Rape Sexual intercourse Human sexual behavior
icon. Compare the two photographs. Runner Action Find a scene with motion‚ such as a fountain or This exposure mode freezes joggers‚ in bright light. motion. Do one photograph with The camera selects a fast shutter the exposure mode set to speed‚ such as 1/100th of a the P icon. second. Do
Premium Shutter speed Photography Camera
aircraft moves along a straight horizontal runway with constant acceleration. It passes a point A on the runway with speed 16 m s–1. It then passes the point B on the runway with speed 34 m s–1. The distance from A to B is 150 m. (a) Find the acceleration of the aircraft. (3) (b) Find the time taken by the aircraft in moving from A to B. (2) (c) Find‚ to 3 significant figures‚ the speed of the aircraft when it passes the point mid-way between A and B. (2) (Total 7 marks) 2. Three posts P‚
Premium Acceleration Kinematics Velocity
lasers‚ and DVD players. Einstein later passed away on April 18‚ 1955. So we begin with the first relativity being the Special Theory of Relativity. Special Theory of Relativity means a physical theory of relativity based on the assumption that the speed of light in a vacuum is a constant and the assumption that the laws of physics are invariant in all inertial systems. Albert Einstein created many different experiments one being where Mrs. Einstein is standing in a field and Mr. Einstein is standing
Premium Special relativity Albert Einstein General relativity
field is also changing in time. Maxwell used these equations to calculate and properties and behaviours of what was now known as the electromagnetic spectrum. From the theorised properties of the electromagnetic spectrum‚ Maxwell also predicted the speed of light and its relation to the electromagnetic spectrum. However‚ as light was concluded as a wave it was presumed light required a medium to be
Premium Special relativity
Important Personalities in Police Photography *Joseph Nicephore Niepce - was able to obtain camera images on papers sensitized with silver chloride solution in 1816.He invented a photographic process which he called "heliography" meaning "writing of the sun" *Louis Jacques Mande Daguerre - invented "Daguerreotype"‚ an early photograph produced on a silver or silver-covered copper plate.It formed an image directly on the silver surface of a metal plate.It was a positive process‚thus‚it yielded
Premium Photographic lens Photography Shutter speed