powder-magazine definition: a location where dust is stored, as a bombproof building in strengthened locations, etc.; A specially built place on board a man-of-war for the storage space and issue of explosives.â¦
In a white light photo, the part of the Sun that we see is called the photosphere. It has a temperature of about 6000 degrees Celsius, much cooler than the corona. Sometimes there are notable dark spots.These sunspots come and go, so look at the Sun again in a few days to see how its appearance has changed.n a white light photo, the part of the Sun that we see is called the photosphere. It has a temperature of about 6000 degrees Celsius, much cooler than the corona. Sometimes there are notable dark spots. These sunspots come and go, so look at the Sun again in a few days to see how its appearance has changed.
Note how the Sun emits the most radiation in the visible range (with some overlap in the UV and IR) while the Earth emits mostly infrared radiation. The incoming energy from the Sun to Earth is mainly visible sunlight, called the visible portion of the spectrum of electromagnetic radiation.We perceive visible sunlight as colors from violet (short-wave radiation) to red (long-wave radiation).raph showing the mostly visible radiation spectrum emitted from the Sun as seen from the surface of the Earth (left curve) and the IR radiation emitted Earth as seen from space (right curve). Compared it to Figure 1 this graph shows the wavelengths that are absorbed by atmospheric gases, causing gaps in the spectrum.