Its diameter will appear about 1/32 of the diameter of the Sun. For safe viewing of the transit, the same rules apply as those for observing an eclipse of the Sun. Eclipse viewing glasses can be used, as long as they are undamaged and observing is limited to a few minutes at a time. Note that they must NOT be used with binoculars or a telescope. For Puma Velvet Joggers
world to observe the transits of 1761 and 1769. By measuring the change in location of the dot (Venus) on the Sun from location to location on Earth, Halley theory used simple geometry to calculate the distance from the Sun to Earth and from Venus to Earth.
ch us about discovery. Humans have used the transit of Venus to understand the solar system and even the universe. Although it just a dot crossing the disk of the sun from earth view, Edmund Halley (of the famed comet) determined that the distance from Earth to the Sun could be determined from a Venus transit. How did Halley theories lead to Puma Fenty Creepers Oatmeal
Unfortunately, the timing of the measurements taken at different places on Earth was not precise enough to Puma Velvet Shoes allow Halley to make the calculations. His theory, and his experimental measurements in the 1700s, allowed the next generation of observers (transits of Venus in 1874 and 1882) to accurately measure the distance from Earth to the Sun (called the "astronomical Unit" or "AU") to within 0. 20%!How can we safely observe the 2012 transit of Venus? It never safe to look at the sun. You must use a device or method to observe the transit indirectly. Venus is large enough for its "dot" to be visible to someone with normal eyesight, without the help of binoculars or a telescope.
an enlarged view, an image of the Sun can be projected onto a screen by a small telescope.
Pinhole projection, which worked well for the recent solar eclipse, will not.
the discovery of the distance from Earth to the Sun? Halley (pronounced like "valley", picture at bottom) knew that the position of the dot (Venus) on the Sun disk would be different from different places on Earth. He sent expeditions around the Puma Fenty Creepers Beige