Australian Aboriginal astronomy. Australian Aboriginal astronomy is a name given to indigenous Australian culture relating to astronomical subjects — such as the Sun and Moon, the stars, planets, and the Milky Way, and their motions on the sky.
One of the earliest records of indigenous astronomy was made by William Edward Stanbridge, an Englishman who emigrated to Australia in 1841 and befriended the local Boorong people.[1] Some Aboriginal groups use the motions of celestial bodies for calendar purposes. Many attribute religious or mythological meanings to celestial bodies and phenomena. There is a diversity of astronomical traditions in Australia, each with its own particular expression of cosmology. However, there appear to be common themes and systems between the groups.
We DON'T all see the same colours say scientists as they claim one person's red is another's blue. Neurons controlling colour perception are not pre-determined By Tammy Hughes Published: 15:59 GMT, 30 June 2012 | Updated: 00:50 GMT, 1 July 2012 New research has led scientists to believe that people do not see all the same colours when they look at similar objects.
Although there is a general consensus that red is the same shade as strawberries, blood and the planet Mars some people could perceive the colour red as another person's blue according to experts. The revelations come after an experiment with monkeys which suggests that our colour perception is shaped by the outside world but follows no predetermined pattern. One person's red could be another's blue say scientists who believe that colour perception is not pre-determined In work published in the scientific journal 'Nature', colour vision scientist Jay Neitz from the University of Washington injected a virus into monkeys' eyes which enabled them to see red as well as green and yellow. What keeps microwave radiation from leaking out the oven door?
A Staff Report from the Straight Dope Science Advisory Board November 4, 2003 Isn't it dangerous to look into an operating microwave oven?
The screen across the door just doesn't seem capable of protecting us. Still, I believe the government safety experts would have thought of this and wouldn't allow dangerous ovens on the market. How are the safety margins measured and how do you know when an oven "goes bad"? — Ernst Gebhardt. Volcano's Eruption Creates Colorful U.S. Sunsets. Many people in the United States and Europe are seeing gorgeous lavender sunsets lately thanks to the eruption more than two weeks ago of Russia's Sarychev Peak volcano.
The volcano blew its top June 12, generating a remarkable shock wave in the atmosphere seen in a photo taken by astronauts. It also hurled massive plumes of sulfur dioxide into the air, and that material has been circling the globe. Deep purple hues and ripples of white characterize the spectacular views the past few evenings. The phenomenon occurs when the ash and fine particles sprayed high into the atmosphere by the volcano scatter light. The sulfur dioxide ejected by Sarychev Peak interacts with the atmosphere to form tiny particles called sulfate aerosols. Light scattering happens all the time. Lately, the volcanic aerosols are combining with the normal scattering particles to create more obstacles for light to pass through, increasing the coloring effect.
Why does the ocean appear blue? Is it because it reflects the color of the sky? Why is the sky blue? Why is the sky blue?
It is easy to see that the sky is blue. Have you ever wondered why? A lot of other smart people have, too. And it took a long time to figure it out! Amazing Northern Lights Time Lapse. How are rainbows made? How a Rainbow is Formed By Gena Mahlen The birth of each rainbow begins with millions of tiny rain droplets.
The rain droplets serve as a type of reflector of light. White light enters one individual rain droplet and exits as one specific color of the spectrum. Without millions of rain droplets, a rainbow would not occur. If you only had a few rain droplets you would only see a few colors. This is typically why rainbow appear after a rain storm. Animation of how rainbows form.
Weird Shrimp Has Astounding Vision. A Swiss marine biologist and an Australian quantum physicist have found that a species of shrimp from the Great Barrier Reef, Australia, can see a world invisible to all other animals.
Dr Sonja Kleinlogel and Professor Andrew White have shown that mantis shrimp not only have the ability to see colours from the ultraviolet through to the infrared, but have optimal polarisation vision -- a first for any animal and a capability that humanity has only achieved in the last decade using fast computer technology. "The mantis shrimp is a delightfully weird beastie," said Professor White, of the University of Queensland. "They're multi-coloured, their genus and species names mean 'mouth-feet' and 'genital-fingers'; they can move each eye independently, they see the world in 11 or 12 primary colours as opposed to our humble three, and now we find that this species can see a world invisible to the rest of us.
" He continues, "It can't be the whole story in our case, though. Prof. Amazing Water & Sound Experiment #2.