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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.
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Advice Home Business Technology Online Advertising Motivational Internet Marketing SEO Help Online Games Science Articles Happiness More Articles:1. Mars and Earth Climate and Landscape By Lance Winslow Summary: Without getting into the debate between the Neptunists and the Plutonists or why the seashells are in the Alps and amongst the rocks and mountains at the highest elevations or why plate Tectonics exist, form, fold under and renew or how volcanoes form or earthquakes occur in this discussion, it is safe to say that what Hutton and the others debated in the royal sociArticle: In our study of our own world we have found patterns in erosion and the landscape made from years of runoff. Anyo… 2. Robotic MAV- Micro Air Vehicle Based on an Organic Humming Bird Model By Lance Winslow Summary: There is no more interesting bird than a humming bird. A gear reduction of 400:1 would give our design of this miniature bird the proper flying ability and it could travel at my desired speed.Having observed humming birds in hummingbird feeders and watching them dive bomb the bunnies in rabbit enclosures and cats in areas nearby their favorite nectar locals. Article: MAV Micro Air Vehicle Based on Organic Hummingbird Model. There is no more interesting bird than a humming bird. Some hu… 3. Ancient Navigation and Mapping By Robert Baird Summary: (Note by editor: this refers to the first figure in the series of diagrams published in Occ. I will cover this in greater detail shortly.} (Note by editor: these items are still under study at Harvard where there is agreement with these comments; one item depicted is apparently an early form of Torquetum, an analog computer employing a plumb bob and circular scales,Article: DR. SENTIEL ROMMEL:As part of the research team that sought to know how rushed the antediluvian navigational equi… 4. Bi-Location By Robert Baird Summary: BI-LOCATION (PADRE PIO & PYTHAGORAS): - I have some experience with an even more 'fantastic' occurrence that ties in with dematerialization. The issue of 'bi- location' itself relates to a variety of other concepts and mysteries but if it is a purely physical experience it might involve time and dimensional shifts, both."After Saint Therese NeumannArticle: BI-LOCATION (PADRE PIO & PYTHAGORAS): - I have some experience with an even more 'fantastic' occurrence that ties in with demateri… |
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