Time travel: sci-fi?Learn Science on mps-science.com. Time travel: sci-fi? article will help answer your questions on Science.We at mps-science.com specialize in Science. Science at mps-science.com provides the most up to date news and articles. If you have questions please do not hesitate to contact us.
One light year is the distance travelled by light (in vacuum) during one year. Therefore one light year equals (300 000 000*3600*24*365)m. A single light year is definitely huge: 9.46 trillion kilometres-no need to put this in digit form-in fact. A star that you see in the night sky is not one but many light years away. Article: When you look at the keen night sky, you see stars-those tiny diamonds suspended in the vast pitch-black emptiness. But stars shine because…? Our own sun, which is a star, emits light. Stars are like giant bulbs but are much more powerful. Light travels at a speed of 3.0*108m/s in vacuum and space is mostly vacuum. In other words light can cover a mighty distance of 300 000 000m in only 1 second! The thing is that 300 000 000m is a just one of those small amounts in space. Other stars are billions of kilometres-let impair metres-away. Astronomers in fact use light year as the unit for distance. One light year is the distance travelled by light (in vacuum) during one year. Therefore one light year equals (300 000 000*3600*24*365)m. A single light year is definitely huge: 9.46 trillion kilometres-no need to put this in digit form-in fact. But where exactly do I want to converge? A star that you see in the night sky is not one but many light years away. This means that it is very far away. But most importantly, it means that light from this particular star takes many years-and not mere seconds-to reach your eyes! So what? When you watch a star, you are positively only seeing the light it emitted years ago. At present, the star may be somewhere else in the night sky. (Stars do move in space). It might have deflected a little to the east or north or north-northeast. The star is still emitting light though. This light will however be seen in the following decades or even centuries; or simply next year. When you watch stars at night, you are for a certainty looking in the past. So who or what is time travelling? The star? You? Or light? The further something is from you, the further in the past you are penetrating into. Maybe then, someday, the newest technologies will be able to observe these seconds hind the Big Bang-if it ever occurred in the first place.
|
Advice Home Business Technology Online Advertising Motivational Internet Marketing SEO Help Online Games Science Articles Happiness More Articles:1. An Introduction to Hydro Energy. By Peter Lenkefi Summary: One such renewable energy source is hydro energy and involves using water to turn turbines, which in turn generates electricity creating hydro energy. some dams provide enough power for up to 10,000 people so it really is an effective form of creating energy for our homes.It's highly unlikely that you have a good enough source of running water running thArticle: What is hydro energy?Fossil fuel reserves have render seriously depleted but conversely our energy use is increasing year on … 2. Cloaking the Postage Stamp Modern Aircraft Carrier By Lance Winslow Summary: By using a special coating on the deck of an aircraft carrier and a projector on the top of the tallest communications mast facing down, we could project the image of the ocean onto the deck like a giant IMAX theatre screen. Meanwhile this gives us additional time to hunt them down and eliminate said problemA high definition camera would take a picture ofArticle: By using a special laminated glass on the deck of an conveyance brassiere and a projector on the top of the tallest wire co… 3. What's In Your Beverage? How to Ensure Quality Control with CO2 Analytical Support Summary:Calibration standards, performance audits, and the FDA's never-ending safety, labeling, and inspection requirements are just the tip of the iceberg when it comes to dealing with the increasingly stringent quality control standards of the beverage industry. Quality Assurance in the beverage industry starts by ensuring that top quality gases are used to perform the carbonation process and continues through the bottling and distributing process with a high-tech quality control examination… 4. A Case for Human Machine Visual Interface By Lance Winslow Summary: If we could see all bands of light, sound, gravity, time, we would see endless colors and streams criss-crossing around us in a sea of light, waves and color. We might if we could see all this find ourselves visually over loaded as well.Such a re-illuminated reality would surely take some getting use to indeed, but is also worthy of mention in that all those Article: Animation of personified reality is intriguing, memorable and interesting as well. Perhaps we ought to remember this whe… |
||||
