Magnifying Optical Solar

Science HELLLPP!!!?

1. Geothermal energy occurs naturally in the Earth. The hot steam and water brought to the surface usually contain salt. Why are these salts an unwanted part of this energy source?

2. In the equation, E=mc2, wat does "c" represent?

3. If you were to design an airplane's wing, how would you attempt to shape it?

4. Which type of optical telescope uses lenses to bend light from distant objects to form a magnified image?

5. What celestial objects might have formed a planet if they had gained enough mass during the formation of the solar system?

6. What is terminal velocity? If a stone, a lead pipe, and a feather are dropped from the same height, which will reach its terminal velocity first?

Really needz help...it would much appreciated

Here are my guesses:
1) Boiling point elevation (colligative properties of electrolytes) ??
2) the speed of light, 3.0 x 10^8 m/s
3) streamlined, with the top part having more surface area than the bottom so the air pressure could be lower up there, causing the higher pressure below to push the wing up.
4) Raleigh-----diffraction gratings???? It's gotta be a concave lens though.
5) I have no idea;i don't even understand hte question...
6) Terminal velocity is the free-falling speed of an object where air resistance is acting on the object with teh same force as gravity, thus keeping the object falling at a constant speed. The feather, the object with the largest surface area/mass ratio, would reach terminal velocity first, and therefore fall to the ground last.

I hope some of that helped..

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A Brief Introduction to Telescopes

What's a telescope? Generally speaking, a telescope is a device that magnifies the degree of visibility of far away objects, making these objects more amenable to observation. The telescope was first used by the early astronomers to observe the sky, and to discover new celestial bodies. Telescopes were instrumental in the advancement of science and in the development of newer and more efficient ways of observing celestial phenomena, such as the sun's activities, the planets' movement around the solar system, and the moon's waxing and waning. It took a long time before modern science was able to device technologies that would supersede the usefulness of the telescope. Even upon the advent of the Hubble Space Telescope, refracting telescopes are still very useful for astronomers and budding scientists, in their quests to understand the nature of the universe, and the Earth's place in it.

Now, there are two general categories for telescopes that are optical- first is the refracting-type telescope, and the second is the reflecting-type telescope. What is a refracting telescope? A refracting telescope has three general parts (which means, no matter how modern a refracting telescope is, it would still have these main parts as foundation for other parts): the telescope tube, the objective lens and the eye piece lens. The simplest explanation for a refracting telescope would be this: a refracting telescope is composed of two lenses that are convex, which are generally more thick in the very center than at the edges. This design allows colors and light to be focused more clearly and transmitted more efficiently to the eye piece lens.

The part of the telescope that is more near to the object being observed (may it be a turtle, a star or someone in a far away window) is called the objective lens. What happens technically is that this particular lens collects the color and light from a particular source, and takes focuses this as an image that is upside down inside the tube of the telescope. In simpler telescopes, the images remain inverted; but in the more modern versions, the images can be righted by special lenses inside the telescope. Other modern versions of the telescope also have recording devices located near the eye piece lens, so you may be able to record the things that you are observing. These types of telescopes are useful especially if you like observing meteor showers, and other types of celestial phenomena that don't visibly happen very often in the world's open skies.

Reflecting telescopes, on the other hand, utilize a different type of lens. Instead of having a convex lens, reflecting telescopes have a curved lens that were specifically crafted to bring back and magnify images. The power of a reflecting telescope to gather and focus light from a source can be achieved by increasing the area of the reflecting telescope's mirror. Large reflecting telescopes that may be found in astronomical installations were built specifically to observe the skies twenty four hours a day.

About the Author

Jesse McKenna is an telescope enthusiast of 12 years. For more information on telescopes, check out the
telescope buying guide
and
stargazing tips
at
The Telescope
.