The Difference Between LED Projector Light and LED Flood Light

LED Projector Light (LED Downlight) call spotlight again, cast shoot light, shoot light to wait a moment, basically use to do building adornment illume to use, and commercial space illuminates with, the component of adornment sex is heavier, its appearance has circle also have square, because must want to consider commonly the reason that come loose, so its appearance and traditional cast light still have a few distinction.LED projection light features:LED projection light is controlled by a built-in microchip, which can be used without a controller in small engineering applications. It can achieve dynamic effects such as gradual change, jump change, color flicker, random flicker, gradual change and alternation, etc. It can also achieve chase, scan and other effects through the control of DMX.LED Flood Light is a point light source that can be irradiated uniformly in all directions, and its irradiation range can be arbitrarily adjusted, which is shown as a regular octahedron in the scene. Omni is the most widely used light source in rendering. Standard omni is used to illuminate the whole scene. Multiple omni lights can be used in the scene to produce better results.Features of led flood lights:LED omni lights, which shine evenly in all directions from a given point, are the best analogy to light bulbs and candles. Floodlights can be placed anywhere in the scene

If I flick the light switch on and off will it damage the light?

That statement originated (to my knowledge) in the damage that can be caused to incandescent lights (those that produce light as a result of [super] heating some element in the light).Fluorescent lights can also be damaged by repeated on/off switching of the "switch," still due to a startup-effect, but differently than incandescents

If a light year takes light to travel a year...?

A light-year is a measure of distance NOT time. As is a light-month or a light-day. A light-year or lightyear (symbol: ly) is a unit of measurement of length, specifically the distance light travels in a vacuum in one year. While there is no authoritative decision on which year is used, the IAU recommends the julian year. Other units of measurement of distance used in astronomy are a parsec and an Astronomical Unit. Here are some conversion factors: 9.46110^15 metres 9.46110^12 kms 9.46110^18 mm 94.60710^24 63.24110^3 AU 3.26 parsecs US customary / Imperial units 372.4710^15 in 31.03910^15 ft 10.34610^15 yd 5.87910^12 miles So if a light-year is just under 6 trillion miles, a light-month must be just under half a trillion miles and a light day about 16.3 billion miles It is about 40 light minutes from the Sun to Jupiter, 5.5 light hours to Pluto, 4.2 light years to the nearest star (Proxima Centauri) 10.5 light years to the nearest star with a planet (Epsilon Eridani) and 20.4 light years to the nearest star with an inhabitable planet (Gliese 581c). Hope that helps put it all in perspective.

What happens to light after it enters an eye

There is some heating that takes place, but the amount is pretty trivial, because there just is not that much light reaching the back of your eye. A back-of-the-envelope sort of estimate would be to say that the light of the Sun reaching the Earth's surface amounts to about a kilowatt of radiation per square meter. Your pupils have a radius of maybe a millimeter, probably much less in bright sunlight. So, if you are staring directly at the Sun (which, hopefully, you are not really doing), you are getting at most a few milliwatts delivered to the back of your eye. That's not going to tax the temperature regulation systems in your body, given that a living human generates about the same heat as a hundred-watt light bulb.If you dramatically increase the amount of light delivered to your eye, say by accidentally catching a high-power pulsed laser in the eye, you can overwhelm the body's ability to carry away the heat, and do real damage. The pulsed-laser lab next to the office where I did my undergrad thesis research had a sign on the door explaining in gruesome detail what would happen if you were to catch a full YAG laser pulse in the eye, which involved the boiling retina basically blasting your eyeball out of your skull. Which is why you wear safety glasses in those labs, and knock before entering any optics lab

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Why Birr Is the Final Frontier for Our Budding Scientists
It's probably not surprising that I am so excited about the launch of the New Science Galleries in Birr. My nickname as a child was Little Miss Don't Touch because I had such a curious mind and always wanted to touch things or take them apart to see how and why they worked.The Science Centre Galleries at Birr Castle Gardens are ideal for children who like to explore and figure out how things work. Birr is the historical heart of science in Ireland, the result of generations of one family with a passion for science and engineering, who have lived at the Castle since 1620.Before our family returned to Birr, my father, Lord Rosse, was a senior official of the United Nations Development Programme, we moved around the world to accommodate his various postings. I was educated on three different continents and in three different languages.I returned to Birr in 1980 when I was 10, living with the historic Great Telescope as the backdrop to my happy childhood, however I had no interest in it whatsoever until I went to university. When it came to choosing a degree I opted to study Aeronautical Engineering in Kingston University, London.In my third year in College, I wrote a 10-page paper on 'The Remarkable Engineering Discoveries of The Parsons'.While astronomy didn't appeal to me the engineering side and the design around the Great Telescope itself was fascinating. I began to think more and more about all the history associated with my home and ancestors; the Third Earl's Telescope and his discovery of the spiral form of the nebula in Canes Venatici, a galaxy more than 10 million light years away, the visit to Birr of Charles Babbage, the father of modern computer science, Countess Mary Rosse, wife of the third Earl and her darkroom which remained in the castle as she left it – the oldest surviving darkroom in the world.The 4th Earl of Rosse was fascinated by the moon and his drawings from that time have proved surprisingly accurate. There was also Charles Parsons; his younger brother who invented the turbine engine for boats in the 1890s which eventually led to the design of today's jet engines.We were lucky to have most of the original manuscripts so I could indulge myself by delving into papers and family history. I would go back to college with facts that would amaze my lecturers such as that the castle had electric lighting before London, indeed we have light bulbs pre-dating Edison's patent of the light bulb. (Sadly too we have the record for the world's first fatal traffic accident in 1869, when Mary Ward, a cousin of the Parsons, was thrown from a steam-propelled car built by the young Charles in the workshops at Birr. After the death he smashed it out of sadness, but for that Birr may have been the hub of early automobile industry too.)Ironically, while everyone in the UK knew about the Great Telescope at Birr and Charles Parsons features heavily at the Institute of Engineers in London, we weren't sharing this story with people in Ireland.I feel strongly these were Irish achievements which we need to use to inspire the next generation of budding young scientists. And so with the support of Government bodies we developed Ireland's Historical Science Centre which told the story of all the different scientific discoveries at Birr.In recent times the museum was becoming quite dated and thanks to Fáilte Ireland and the Birr Scientific & Heritage Foundation as well as many other enlightened people, the new Science Centre Galleries opens today. It focuses on the people behind all the discoveries – the human stories around the science – their working and family lives, and the local people, many of whose descendants still live in Birr and all contributed to bringing it together.For me the Science Centre is vital to ensure we continue to encourage generations to study science. I firmly believe in children having fun with science, that's what we are trying to do this time in Birr, like the W5 Science Museum in Belfast, encouraging children to ask why and how. At Birr we are continuing on the scientific tradition to this day with the most up to date solar spectronomer led by Trinity College, which allows data received from the sun, by radio waves, to be sent to scientists all over the world.With my family, including my two brothers Patrick and Michael, we are working together, to make Birr a perfect family destination. I see it as a domain of discovery for everyone.Lady Alicia Clements is an engineer and daughter of Lord and Lady Rosse of Birr Castle, Co Offaly.Irish Independent
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