"One day I will go out."
Funny Animal Pictures by Ty Buchanan
Showing posts with label see. Show all posts
Showing posts with label see. Show all posts
Destination Australia
Just what has Australia got? Quite a lot actually. The visitor can indulge in the rich Australian culture - G'day mate! The largest island in the world, though for some reason it is not classed as an island, too big apparently. Wildlife sanctuaries, busy cities, dry mysterious deserts, tropical beaches, it is all here.
Sydney is a clean city with bright blue harbour water. Must sees are Sydney Harbour Bridge and the Opera House. Enjoy surfing Bondi and Manly beaches in the hot sunshine.
Cairns in Queensland has the Daintree ainforest and the Barrier Reef. Go scuba diving, snorkelling and hiking. island resorts abound. Vacationers always view the whales and dolphins.
Alice Spring in the hot center stands on it own. You can get a drink anywhere. It is a long drive but worth it. Two hundred miles away lies Ayers Rock (Uluru). Another ideal place to take a driving holiday. Darwin on the other hand is a busy place.
Melbourne is the go ahead city. Something new is always going on there. It has the country's leading museums covering science, history, culture and sport. Enjoy a coffee in one of the varied cafes.
Other places to visit are the other capital cities, not on the one vacation though. Adelaide has many old hotels where you can partake in a counter lunch. Queensland is a real holiday destination. Perth has it all being well away from the other Australian cities: water sport is the thing to do.
Travel by Ty Buchanan
No Night Darkness in the Infrared
Human beings perceive objects by seeing in the "normal" optical range. This is purely an evolutionary imperative. Evolution could just as easily given us eyes that work in the infrared to know what is going on around us. If this was the case we would experience no night at all. The night sky would be just as clear as the sky in the day.
At night the sky would be lit by hydroxyl molecules emitting infrared light in the form of a mass of narrow emission lines. It would be like daylight, though a few stars could be seen along with the Sun and the Moon.
Telescopes operating in the infrared get over this problem by using limited apertures and special filters. These filters use a photonic lantern system to move the light into parallel tracks. A Bragg filter reflects out the tracks and lets wavelengths between lines through. Many IR telescopes are in space where such a filter is unnecessary. The space telescopes beam data back to Earth.
At night the sky would be lit by hydroxyl molecules emitting infrared light in the form of a mass of narrow emission lines. It would be like daylight, though a few stars could be seen along with the Sun and the Moon.
Telescopes operating in the infrared get over this problem by using limited apertures and special filters. These filters use a photonic lantern system to move the light into parallel tracks. A Bragg filter reflects out the tracks and lets wavelengths between lines through. Many IR telescopes are in space where such a filter is unnecessary. The space telescopes beam data back to Earth.
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Science
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