Curious how this sorcery happens? You bet you are.
An insect like a wasp or a water strider can rest atop the water, held up by surface tension. This means that the cohesive force of the water molecules sticking to each other is stronger than the force of the bug being pushed down by gravity. This works because it spreads its weight out over a large surface area (like snowshoes).
That creates a slight indentation in the top of the water, changing the direction that the light coming down is refracted and re-directing it slightly sideways (that’s where the bright halos around the dark areas come from). And what’s the absence of light?
All those words in picture form:
A helpful little song ‘strange charm’ to remember the quarks!
The Difference Between an Asteroid, Meteor and a Comet:
Asteroids (Bo.Right) and comets(Bo.Left) are both classified as ‘near earth objects’. An asteroid is composed of mainly metals and rock whereas comets are mostly ice (hence the long tail), sometimes containing carbon, and come from much further away in the solar system.
When a comet comes within distance of the sun, dust is liberated from the icy tail: forming meteoroids. Asteroids also break-up into meteoroids but, because they are much larger, will normally have to endure impact with each other before this happens. When meteoroids enter the Earth’s atmosphere and heat up, they become meteors (Perseid Meteor; Top) if they survive this without vaporization and make it to the Earth’s ground, they proceed to become described as meteorites.
The Human Brain Project: Is the extraordinary innovation to attempt to completely map the human brain and create a super computer with the capabilities of realistically reflecting the mega completion it holds its mystery. Based in Switzerland -along with 80 other European constitutions- they,cooperatively, will combine technology and neuroscience to achieve the feat. It will allow us to see how the brain works; a new way study and (finally) objectively classify brain diseases: giving us an insight otherwise impossible experimentally and theoretically. Not only will it hold new beginnings for medicine but will spark development into computing technology: a ‘neuro-morphic computer’ capable of behaving as a human brain - the capacity to learn from experience. I, for one, am thoroughly excited!