What is Photosphere?
Fotosphere is a visible layer of the star, most often raises discussions about the sun. Although the sun seems to have a solid outer layer, as well as the Earth, in fact it is made up of extremely hot gases and has no solid surface. The photosphere indicates a boundary where light can penetrate the gases, allowing it to become less opaque and therefore visible. What one sees when looking at the sun is a photosphere.
The atmospheric layer density is not always consistent in all places, but it tends to be about 248.5-310.6 miles (400–500 km) thick. The temperature is between 5,000 and 6,000 degrees Kelvin, or about 8 540-10 340 degrees Fahrenheit. It is the lowest layer of the atmosphere of the Sun, which sits under a much stronger chromosphere and a huge corona. Under the photosphere lies solar convections and radiation zones and below, a powerful nucleus.
Looking at the photosphere from a distance, this may seem a simple yellow or orange disk with several dark spots known as sun spots. Close, however, the photosphereRa has a textured look that is often referred to as granulated. Even if you do not necessarily look, the bubbling texture of the Fotosphere is proof of exactly how the sun works: bubbles and buttons are signs of convection process. The convection in the sun works in the same way as a boiling pot of water; The heated photons rise to the surface, while the colder fall, except for the bubbling surface on the pot of boiling water, the convection of the sun produces granulation on the photosphere.
The sun, dark spots that are often seen in the pictures of the Sun are the spots of the atmosphere where it is noticeably cooler, sometimes more than 1,000 Kelvin (1340 F). Sun spots are not constant features, and within a few weeks they tend to rise and fall. Despite their comparison, these stains were exceptionally strong magnetic forces. Although they often look slight, the sun spots on the photosphere are often tens of thousands of kilometers across.
Interestingly, observation of the photosphere led to the discovery of one of the most abundantElements in space: helium. Although the credit is given to various English scientists Norman Lockyer and French astronomer Pierre Jansen, both observed the special yellow spectral lines around the Sun, which could not be replicated by well -known elements. Helia confirmation on Earth did not occur only more than twenty years later, making it a single element discovered by an alien than to be identified on Earth.