Intrusting Information: Space Related Interesting Pictures

Intrusting Information: Space Related Interesting Pictures: Most detailed image of the Crab Nebula This new Hubble image - One among the largest ever produced with the Earth-orbiting observator...

Comments

Post a Comment

Popular posts from this blog

Charity Destroys Lives

Image
By its very definition, charity is selfless. Whether it’s dropping a few pennies in a collection box or shipping our old T-shirts off to Africa, a spot of charity is a quick and easy way to net some karma. At least it would be if it didn’t usually harm the very people we’re trying to help. Take our practice of sending old clothes to Africa. Objectively, it makes sense: People living on under a dollar a day probably don’t have much of a clothing budget, so why not redistribute the stuff we’re not using? In fact, it makes so much sense that millions of us pack and ship off our novelty Christmas jumpers every year - resulting in the complete collapse of the African textile industry. Think about it: If you flood a market with free goods, you’ll bankrupt the traders and manufacturers trying to sell them. And that’s exactly what’s happened here. Across the continent, whole communities have lost their livelihoods in exchange for your old Slayer T-shirts.
Read more

The Amazing Electric Fishes

Image
The electric organs are specialized organs, derived from the muscles or the nerve cell's axon, that can generate electric current, employed from catching the prey (electro-paralysis) to defense, orientation (electro-location, similar the way bats and dolphins use ultrasounds in ecolocation), or as a means of communication, for mating, feeding or territory defense. The electric fish, producing electricity, are electrogenic, but as they sense the electricity they are also electroreceptive. There are species that are not electrogenic, being only electroreceptive, detecting the weak fields generated by their prey (any living thing generates a weak electric field, which could be just 0.01 microvolts), like sharks, rays (except the electric ones, which are also electrogenic), lungfishes and even ... the platypus (a mammal!). It clearly appears that electricity works only in water. There are about 500 species of electric fish. Here are the most important examples: ...
Read more

Why is the Sky Blue?

Image
To explain why the sky is blue we will need to take a quick look at the Sun and the atmosphere in understanding the role they play in the sky appearing blue. Light from the sun (sunlight) is composed of seven colors (rainbow colors) of different wavelength* that blend perfectly to make the sun’s light white in appearance. This light from the Sun is called white light. The different colors in sunlight (white light) can be seen by passing sunlight through a prism (see diagram below). When sunlight (white light) is allowed to pass through a prism, it scatters the different colors of light according to their wavelength, showing a continuous band of colors. This procedure exhibits the range (visible light spectrum) of colors - red, orange, yellow, green, blue, indigo, and violet in that order. This means that the different colors of light have different wavelengths in which red light has the longest wavelength and blue light found at the other end of the visible...
Read more