For example, dopamine plays a big role in starting movement, and the destruction of dopamine neurons in an area of the brain called the substantia nigra is what produces the symptoms of Parkinsonâs disease. Dopamine also plays an important role as a hormone, inhibiting prolactin to stop the release of breast milk.
Why are sunspots darker than the rest of the Sun? Sunspots appear dark (in visible light) because they are much cooler than the rest of the surface of the Sun. However, even though they appear dark, they are still very hot. Sunspots have temperatures around 6,300 Fahrenheit (~3,500 Celsius) while the surrounding surface of the sun has a temperature of about 10,000 Fahrenheit (5,500 Celsius). If a sunspot was alone in space, it would glow brightly.
Sunspots and Solar Rotation The Problem: When Galileo first pointed his telescope at the Sun he found dark spots on its surface (But he also may have ruined his eyes - there are better ways to look at the Sun). Sunspots and phenomena related to them can affect the Earth in a number of ways. They can also be used to derive the rotation period of the sun. The goal of this project is to track the movements of sunspots for several weeks to prove that the Sun rotates and to derive its period of rotation. Since this is ``real'' data, this is also an excellent