asked:




Grid-Tie System

 

 This is an electrical system which consists of patterns of lines which are spaced horizontally and vertically and are composed of extremely high in tension cable lines like a power grid or a power system. It is perforated or corrugated with plates that are metal and are used as storage for electricity or electrical energy or as a conductor. These grid-tie systems are major concerned about the solar energy that is emitted by the sun. It can work as a solar power system and absorb solar energy and store it and use it in need. Since the storage of this Solar energy is very high compared to other products in the market, this is more in demand and is used in countries where the winter is too cold and there is lack of electrical energy.

Having sufficient and highly capable battery storage facilities, these solar panels in the grid-tie systems work towards pertaining measures like energy consumption and saving. It is most essential and useful for residential areas. Also what is unique with this metering device is its quiet, task accomplishing characteristic that starts working automatically when the sun rises. Places that have scorching summers and freezing winters has been recorded the best places to use these solar systems, so that the heat is absorbed and the inverter makes use of the heat during the seasons like winter and rains. It not only works well, but also being efficient, it saves a plenty of money being wasted on the payment of electrical bills.

Alexander Sutton asked:




A refracting telescope uses a lens as its objective to form an image. The refracting telescope was designed for used in a spy glass, but is also used in other devices such as binoculars and telephoto camera lenses.

There are two principles to a refracting telescope, an objective lens and an eyepiece. These two principles gather more light for the human eye and helps to focus and present it in a brighter, clearer, and magnified virtual image. A refractive telescope bends light to cause parallel light rays to converge at a focal point.

Galilean Telescopes are refracting telescopes. Galileo came up with the design in 1608 and uses a convex lens and a concave eyepiece lens. The Galilean telescope magnifies objects up to thirty times. The Galilean telescope was the first telescope to see the planet Jupiter and its moons.

The Keplerian Telescope, invent by Johannes Kepler in 1611 improves upon Galileo’s design. The Keplerian Telescope uses a convex lens in opposition to Galileo’s concave lens. This allows for a broader field of view and greater eye relief. However, the view is introverted.

An achromatic refractor is a refracting lens which was invented in 1733. The design over came the need for very long focal lengths and used two pieces of glass with different dispersion to limit the effects of chromatic and spherical aberration. Each side of each piece of glass is ground and polished, at which point the two pieces of glass are assembled together. Achromatic lenses bring two wavelengths together and focus them on the same plane.

asked:




The vast differences between the planets do not seem to support the accepted scientific theories of their formation.

The theory held by many scientists concerning the evolution of our solar system is basically that a large gas cloud in space condensed into what we now call the sun. Chunks of this cloud flew off into orbit around the sun and eventually condensed into planets. That is, the other planets in our solar system were allegedly formed by the same process which formed our own planet, earth.

Sound logical? It might have — in the eighteenth century. Not today. Space exploration does not seem to support this.

EXPLORATION OF VENUS

On February 12, 1961, the Soviet Union launched Venera 1 into solar orbit, making it one of the earliest attempts to probe Venus. By the time Veneras 13 and 14 landed on Venus in early 1982, man had already landed several modules on Venus which relayed good data back to earth. Throughout these missions it became painfully clear to scientists that the real Venus had no resemblance to the Venus about which they had theorized before the probes.

Venus was once thought of as “earth’s twin.” It is our nearest neighbor in the solar system, and it is approximately the same size and density as earth. Although Venus intercepts twice as much sunlight as earth because it is closer to the sun, it was thought that its surface conditions were similar to earth’s since the thick global clouds of Venus reflected most of the extra light. Scientists reasoned further that since earth and Venus condensed from the interstellar clouds of the same region in space their elemental composition must be roughly the same.

The theories about Venus went as far as saying that its atmosphere was made up of the same gases as that of earth, and one day on Venus was about the same length as a day on earth.

The picture we had of Venus was of a planet similar to earth except for something of a “murky jungle” spanning the entire globe. The impression scientists gave was that astronauts landing on Venus would need little more than London Fog coats.

As exploration of Venus proceeded, facts began replacing completely erroneous theories. Not only were conditions on Venus not what we had anticipated, but the data returned by the Venera and Mariner missions showed Venus to be so different that it appeared highly unlikely that earth and Venus could have evolved from the same gas clouds. We found Venus to be a far more hostile environment than the “murky jungle” we had envisioned.

So much so, that Venus’ climate is probably more hostile than any other planet in our solar system. The only ones more disappointed than scientists were Bangladesh tigers — they were convinced that after death they went up to the jungles of Venus.

Here’s an idea of what it’s like on Venus: the temperature is around 900 degrees Fahrenheit — that’s great vacation weather, if you happen to be a tube worm with poor circulation. The atmosphere is about 97 percent carbon dioxide, as compared to earth’s atmosphere of about 90 percent nitrogen and oxygen.

Bright sunny days on Venus are nonexistent — every day is like a heavy overcast. And if the sun did come out, you could never go to the beach on Venus because there are no oceans. Venus is so dry that the relative humidity rarely reaches one percent — forget about “raindrops fallin’ on your head.” But then, on Venus, the last thing you’d want is rain. Rain on “earth’s twin” consists of sulfuric acid. Such a rain would dissolve sulfur, mercury, lead, tin, and most rocks. To go out in weather like that your Totes hat would need a lining made of tempered steel, and Tarzan would have to wear a lot more than “Fruit of the Loom.”

If you still think conditions on Venus are similar to those of earth, I strongly suggest you move to different neighborhood — your current one has completely deteriorated.

Venus has a surface pressure of about 90 times that of earth, which is the equivalent of going about a half mile down into the ocean. The sun rises in the west and sets in the east.

One day on Venus takes approximately eight earth months — a couple living on Venus could have a baby almost every “day.”

AGAIN, CONTRADICTIONS

Of all the great differences between earth and Venus, one in particular poses a very strong and obvious question: if earth and Venus formed of the same gas clouds, how can 70 percent of earth’s surface be covered with water yet the only trace of water on Venus is a relative humidity of about one percent? What happened to all the water on Venus? Or, where did all the water on earth come from?

AND THEN, THE THEORIES

One theory, and perhaps even the only one, about where all the water on Venus went is this: millions of years ago, the greenhouse effect of Venus’ atmosphere caused its temperatures to soar above 2000 degrees Fahrenheit. This caused water to break up into hydrogen and oxygen. The hydrogen escaped into space and the oxygen mixed with molten rock forming the Venusian crust.

Then why is there a large volume of water on earth?

Scientific studies suggest that earth, during its alleged formation, was hot enough that to this day it retains a molten core. So, if earth also went through extreme heat during its infancy, why didn’t water on earth take the same course as water on Venus? By the time earth cooled, there should have been about as much water left on it as there is on Venus today — practically none.

Furthermore, there is no evidence indicating that there was ever any large volume of water on Venus. There are no gullies, trenches, or craters left vacant by oceans, lakes, or rivers. If all the waters on earth were to disappear, they’d leave some unmistakable natural landmarks behind.

The answer given by some is that perhaps Venus’ high temperatures never allowed water to even reach a liquid state.

Then why is there no water on Mars? Mars is cooler and farther away from the sun than Venus and even earth — it has no scorching atmosphere, but it is an extremely dry planet. That is, Mars does not have the kind of atmosphere which might have kept water from condensing or might have caused water to disappear as it allegedly did on Venus. Yet, Mars has only some ice at the poles and small traces of water vapor in the atmosphere. No oceans, rivers, glaciers, or even ponds. Where did all the water on Mars go? Or why wasn’t any there to begin with?

So, you see, no matter what your vantage point, earth’s surface being 70 percent covered with water is, from an evolutionary standpoint, an inexplicable phenomena. Did the planets really evolve of the same stuff in space? Did they evolve at all? It certainly does not seem that way. How do you explain three planets right next to each other, one is a dry oven, one is an arid desert, and the one in the middle is flooded with water? Evolution? Think again.

And while you’re thinking, try explaining why earth has a magnetic field while Venus does not. And why Venus revolves differently from the other planets. And why most of the planets are flat at the poles while Venus is round. And why the surface of Venus is smooth in comparison to that of earth and Mars. Because the planets in our solar system were formed by the same evolutionary process? There is no better proof than the planets themselves that presently held theories of planetary evolution do not “hold water.”

A BETTER THEORY

Maybe what we need is simply another imaginative theory concerning the disappearance of water on Venus: About 648 million ago, 7 billion little aliens with big bladders landed on Venus in a spaceship the size of Krakatoa. They drank up all the water, then flew to earth and went to the men’s room. (The women stayed home to take care of the babies — with bladders like that, babies need a lot of attention.)

THEORIES DO NOT CHANGE FACTS

The question of whether scientific accounts of the origin and evolution of the planets actually occurred is premature at this point. There’s a more fundamental question here: do theories of planetary evolution make any sense? In spite of the onslaught of “scientific” theories, which sometimes give the impression of being designed to make sense out of the irrational, our space explorations seem to indicate that these theories make no sense.

Strangely, here on earth, accurate weather predictions are limited to a matter of days. The course of such commonplace weather conditions as storms and hurricanes sometimes cannot be accurately predicted a mere twenty four hours in advance. But somehow, there are “experts” who can state with astonishing certainty how the weather patterns on Venus over alleged billions of years caused entire oceans to go up into space and down into rocks. Maybe we ought to send some scientists to live on Venus so they can give us better weather predictions here on earth?

NEW TOOLS

The problem apparently is that scientists are trying to solve new puzzles — puzzles brought about by space exploration — with outdated “tools” — old theories. It’s time to stop bending and twisting these tools in a futile attempt to make them fit the facts. It’s time to get new tools. What we need are theories which fit the facts and do not pretend to explain that which they do not. We need theories which do not become obsolete every time science takes another step forward. Perhaps such theories will come when we finally realize that although every physical phenomenon must have an origin, not every origin must necessarily be of a physical nature. Is it possible the Solar System was actually Created, or Directed to form, in its current state? You have a better explanation?

by Josh Greenberger This has been an excerpt from his free book on evolution at EvolutionDead.com

Eriani Doyel asked:




In 1975, the Orion Telescope Company began as a mail order catalog company offering telescopes for both new and seasoned astronomers. They joined with the Imaginova Company in 1999 to better serve their customers and market their product.

Orion offers telescopes but they also sell binoculars for all types of outdoor enthusiasts. If you visit their site you will find customer support, same day shipping service, binoculars and telescopes to fit every budget and need, and information to help you to make your Orion Telescope purchase. Orion offers five different types of telescopes for your viewing pleasure:

1. The reflector was one of the first telescopes invented. It was originally called the Newtonian, after Sir Isaac Newton who produced the first model. It uses a series of mirrors to focus and reflect the image back to the eye. The reflector is generally better for deep sky viewing.

2. Orion Telescope also produces another good beginner scope in the refractor scope. This scope uses curved glass lenses to reflect images in the night sky. It is ideal for looking at individual planets, stars, the moon, etc. and gets crisp, clear detail.

3. The Cassegrain telescope is known for its portability and its ability to look at images both on the ground and in the sky. It is one of the Orion Telescope line that is most adapted to be taken out on hiking or camping trips.

4. Spotting scopes are a product which is similar in nature to binoculars. They are much like the telescopes you might have seen on the old pirate movies except they are not usually made in gold anymore. This is another highly portable member of the Orion Telescope family and the images are seen upright unlike many telescopes that invert images. They are great for horizon level viewing.

5. Dobsonian scopes are refractor telescopes that have a very low base and can be used on a table top, on the ground or any other fairly flat, even surface. They are good for beginners who may prefer the point and view method of using an Orion Telescope.

Take a look at the Orion Telescope line. Not only do they offer a wide variety of products with accessories to help you, and enhance your viewing experience, they have information that will help you to decide which if any of their products is right for you. Professionals and beginners alike may find something that may appeal or interest them.

cloudsfullofcharm asked:

video of me unboxing my first refractor telescope part 1 of 2. this is only an unboxing video, it is not a review video. also, i am not going to do a full review video on this telescope because i am a beginner (noob) at astronomy, therefore, i am not knowledgeable on telescopes. however, i can offer you this advise. that i believe, telescopes are no different than how cameras are in the market. for x amount of money, you’re going to get that much qualities on your lens, features and cameras. thus, for this price range telescope and by the feel of it, i would not recommend this for advance and expert astronomy. however, for beginners, i think this is a good “refractor” telescope because you can always upgrade to a better telescope if one chooses to continue with astronomy or ditch it without spending too much. thanks for watching this video and reading this selection of my advice. specs and info below : CELESTRON Powerseeker 50 Refractor Telescope Technical Details Optical Design – Refractor Aperture – 50mm Focal Length – 600mm F-Number – 12 Finderscope – 5×24 Product Details Item Weight: 7 pounds # ASIN: B0000UMLYI # Item model number: 21039 Product Description The CELESTRON Powerseeker 50 will bring out the stargazer in each of us, and even serves the astronomical yearnings that lead us to search for heavenly bodies in nearby apartment building windows! Star Diagonal -. 96 Mount – Altazimuth Eyepiece -. 96 (30x) Includes dedicated aluminum tripod for immediate use with …

asked:




The Solar System

 

The Solar System or solar system consists of the Sun and the other celestial objects gravitationally bound to it: the eight planets, their 166 known moons,[1] three dwarf planets (Ceres, Pluto, and Eris and their four known moons), and billions of small bodies. This last category includes asteroids, Kuiper belt objects, comets, meteoroids, and interplanetary dust.

 

In broad terms, the charted regions of the Solar System consist of the Sun, four

terrestrial inner planets, an asteroid belt composed of small rocky bodies, four

gas giant outer planets, and a second belt, called the Kuiper belt, composed of icy objects. Beyond the Kuiper belt is the scattered disc, the heliopause, and ultimately the hypothetical Oort cloud.

 

In order of their distances from the Sun, the planets are Mercury, Venus,

Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Six of the eight planets

are in turn orbited by natural satellites, usually termed “moons” after

Earth’s Moon, and each of the outer planets is encircled by planetary rings

of dust and other particles. All the planets except Earth are named after

gods and goddesses from Greco-Roman mythology. The three dwarf planets

are Pluto, the largest known Kuiper belt object; Ceres, the largest object in

the asteroid belt; and Eris, which lies in the scattered disc.

 

Terminology

Objects orbiting the Sun are divided into three classes: planets, dwarf planets, and small Solar System bodies.

A planet is any body in orbit around the Sun that a) has enough mass to form

itself into a spherical shape and b) has cleared its immediate neighborhood of

all smaller objects. There are eight known planets: Mercury, Venus, Earth,

Mars, Jupiter, Saturn, Uranus, and Neptune.

 

On August 24 2006 the International Astronomical Union defined the term

“planet” for the first time, excluding Pluto and reclassifying it under the new

category of dwarf planet along with Eris and Ceres.

A dwarf planet is not required to clear its neighbourhood of other celestial

bodies. Other objects that may become classified as dwarf planets are

Sedna, Orcus, and Quaoar.

 

From the time of its discovery in 1930 until 2006, Pluto was considered the

Solar System’s ninth planet. But in the late 20th and early 21st centuries,

many objects similar to Pluto were discovered in the outer Solar System,

most notably Eris, which is slightly larger than Pluto.

The remainder of the objects in orbit around the Sun are small Solar System

bodies (SSSBs).

 

Natural satellites, or moons, are those objects in orbit around planets, dwarf

planets and SSSBs, rather than the Sun itself.

A planet’s distance from the Sun varies in the course of its year. Its closest

approach to the Sun is called its perihelion, while its farthest distance from

the Sun is called its aphelion.

 

Astronomers usually measure distances within the Solar System in

astronomical units (AU). One AU is the approximate distance between the

asked:




As we all know, there has been recent speculation of what constitutes a planet and what doesn’t. The target of this mystery was Pluto. Yet the IAU (International Astronomical Union) says that a planet is “a celestial body that is in orbit around the sun, has sufficient mass for its self gravity to overcome rigid body forces so that it assumes a nearly round shape and has cleared the neighborhood around its orbit.”

In addition to Earth and its moon Luna, there are eight other planets within our solar system that also contain their own orbiting satellites, or moons. The first of these planets, and the closest to the sun, is Mercury. You would think that this planet being so close to the sun would mean the entire thing is rather toasty, but that is not true. Only the side closest to the sun is the fried side. The side away from the sun can actually drop hundreds of degrees below zero.

John B Mayall asked:




Lenses and mirrors are the elements used to collect and view focused light in telescopes. Mirrors are the medium for focusing in reflector telescopes, while lenses are the medium in refractors. Each type has its own distinct advantages and disadvantages. Refractor type telescopes use lenses. These lenses bend the light when it enters the telescope from the distant object being viewed through it. Because of this refraction it is possible to closely view a distant object. The telescope has two lenses, with one slightly larger.

The eyepiece in the telescope is generally a small lens. Some telescope however, may not use lenses for the eyepiece at all. The eyepiece, in any case, is the most important element of a telescope. It is the element which lets you see correctly whatever it is that you want to focus on. These eyepieces are adjustable and are of a low power. Adjusting the eyepiece allows you to change the magnification factor. What kind of lens you use for the eyepiece is a personal choice. In today’s age, several different kinds of eyepieces are available in the market. Because of this motley available, choosing the correct eyepiece fro your requirement may be a difficult task. As a result, you should concentrate on defining the criteria you think are important for your choice. The depth of field, optical quality, sharpness, clarity, brightness, market price, barrel size and how it affects your eyesight are some of the major points of concern. However these criteria always remain individual prerogatives.

Lens designs used in older telescopes go by the name of Huygens and Ramsden. Professional astronomers are advised to not use these lenses anymore as they are not of superior quality, even though they are comparatively less expensive than other market lenses. These lenses also do not provide correction for chromatic aberration or the light circles that form around brighter objects when they are viewed.

Professional astronomers use orthoscopic lenses that are designed specifically for professional stargazing. Even amateurs will find these lenses good for their telescopes. The orthoscopic telescopes use four lenses in the eyepiece, and have a 45 degree field of vision (FOV). Since the eyepiece is the element most important to the quality of a telescope, this design is a winner. The lenses do not strain the user’s eyes, and can be used even for viewing closer objects like planets.

For a person with a moderate budget, a Barlow lens is a viable option. The design provides average quality but is a good bargain. It does not burn a hole in one’s pocket, and yet is not of inferior quality because of its cost. The range at which this lens is available starts at a low $30 and goes up to $70. The magnification factor is generally not enough for professional use, however for amateurs it should be enough. For hobbyists, it is an ideal lens.

When you’re looking for lenses for a telescope, it is important that you determine criteria that most comprehensively fulfill your needs from the lens. Adjustable lenses is a good option as it means you can view objects which are not too far, as well as distant stars with it, and thus obtain the best deal your money can buy you.

CumputerPhysiscsLab asked:

4 inch refractor Takahashi FS-102 2011-02-06 Canon EOS 450d (Rebel XSi) DSLR camera capturing video with eos_movrec Post-processing with Registax 5.1 and Fitswork4 Good seeing, no turbulence, good transparency More astrophotography pictures here: www.awesky.com If you want to play with Registax, Avistack or AutoStakkert you may use my Jupiter raw footage; download it here: www.mediafire.com This video is not about Ufo Sightings nor Nasa Imagery. It is just about what an astronomy amateur can depict through a backyard telescope looking at a clear night sky. Planet Jupiter through amateur telescope, Solar System, stacking, apochromatic refractor, Registax, Fitswork, Takahashi FS-102, Astronomy, Astrophotography, Backyard, Photo, Image, Shot, Noise, 2011-02-06, Canon EOS 450d, Rebel XSi, video, picture, DSLR, 2011

supernick345 asked:

From 02.02.11 www.youtube.com YouCan Find The Channels Here: (UK Only) Bid TV: Freeview Channel 23 Sky Channel 654 Virgin Channel 745 Freesat Channel 802 Online www.bid.tv & http www.twitter.com Price-Drop TV: Freeview Channel 37 Sky Channel 645 Virgin Channel 741 FreeSat Channel 801 Online www.price-drop.tv & http www.twitter.com Speed Auction TV: Sky Channel 665 Virgin Channel 746 Freesat Channel 814 Online www.speedauction.tv & http