Write something about yourself. No need to be fancy, just an overview. No Archives Categories. Otkroveniya kosmicheskogo prisheltsa. Novye vstrechi s kosmicheskim prisheltsem i otkrytiya v Kosmose i na Zemle [Vorobev A.] on Amazon.com. *FREE* shipping on qualifying offers.

Levenhuk around the world • • Baltic states: • • Benelux: • • Bulgaria: • • Czech Rep.: • • Denmark: • • Finland: • • France: • Georgia: • • Germany: • • Greece: • • Hungary: • • Iceland: • • India: • • Italy: • • Malaysia: • • Poland: • • Portugal: • • Romania: • • Serbia: • • Slovakia: • • Slovenia: • • Spain: • • Sweden: • • Switzerland: • • Thailand: • • Turkey: • • Ukraine: • • United Kingdom: • • USA & Canada: » » Telescope Under a Microscope: How Does It Work? Telescope Under a Microscope: How Does It Work? Publishing date: Imagine a human eye five centimeters in diameter. Now, imagine that there is also half a meter from its pupil to the retina.

Norwalk hour. Green Party representative in the British House of Lords, Jenny Jones, exposed the unit’s existence in an opinion piece in the Guardian. • • • • • • • • • • • • Whistleblower uncovers London police hacking of journalists and protestors By Trevor Johnson 15 April 2017 The existence of a secretive unit within London’s Metropolitan Police that uses hacking to illegally access the emails of hundreds of political campaigners and journalists has been revealed. At least two of the journalists work for the Guardian. The letter reveals that through the hacking, Scotland Yard has illegally accessed the email accounts of activists for many years, and this was possible due to help from “counterparts in India.” The letter alleged that the Metropolitan Police had asked police in India to obtain passwords on their behalf—a job that the Indian police subcontracted out to groups of hackers in India. The facts she revealed are based on a letter written to her by a whistleblower.

This is basically what a telescope is—a giant eyeball. Our eye acts as a lens: it doesn't see the objects themselves, it sees the light reflected from their surface (that's also why we don't see anything in the dark). Light passes through the crystalline lens to the retina, which sends impulses to our brain, which, in turn, forms a picture.

The only difference between a human eye and a telescope is that the telescope lens is much bigger and, therefore, gathers light even from distant objects that our eye simply cannot see. Even though the principle is the same, telescopes vary in design.

First, let's talk about refracting telescopes, or refractors. A refractor is basically a tube with a double-convex lens—like this: ( )—on each end. They gather light from celestial objects, refract it, and focus it, so we can see an image in the eyepiece. Now, let's move on to reflecting telescopes, or reflectors. Instead of refracting light rays, they reflect them. A basic reflector is a tube with two mirrors inside.

There is an objective lens at the front, a bigger mirror in the back, and a smaller mirror in the middle of the telescope tube. Light that passes through the objective lens is reflected from the larger mirror to the smaller one—mounted at a specific angle—which then reflects the rays to the eyepiece, where we see the resulting image of an object. You can easily tell a reflector from a refractor: reflectors have their eyepieces mounted on the side of the tube, while refractors have them on the end of the telescope tube. As with Nikon vs. Canon, reflectors vs. Cubase le 4 free download. Refractors has been a subject of many heated discussions among stargazers the world over.

Let's take a closer look at both optical designs. Refractors are easier to use and maintain; you can easily transport them without worrying about breaking mirrors, and store them without dreading a speck of dust getting inside the telescope tube. Terrestrial observations aren't a problem either because the produced image is not inverted.

Reflectors are far more fragile but allow you to study deep-sky objects and try your hand at astrophotography. In general, refractors are better suited for beginners, while reflectors are perfect for experienced stargazers. Well, since refractors are simpler, we'll be using them as an example, to better understand the way telescopes work, and we'll be using telescopes from Levenhuk for that purpose because they are perfect for beginners.