Calculating the angle of the sun from the horizon requires measuring tools and some mathematical calculations. This experiment works best on a bright day, when the sun creates a distinct shadow.Know More
Find a stick that can be driven into the ground sturdily enough to stand upright. Using a meter stick or a tape measure, measure the length of the stick and the length of the shadow it casts. Record length measurements in whichever system is easiest, just be sure that the same system is used for both measurements. Also, be sure to note the month and time of day. To calculate the sun's angle, divide the length of the stick by the length of the shadow. Next, find the inverse tangent of that value - use tan^-1 for the inverse tangent. If using a scientific calculator, be sure that it is set to degrees and not radians.
Repeating the above experiment multiple times a day, over a course of time, eventually yields a table of sun angle values. Use sun angle tables to provide sun angle calculators. Interested parties simply plug in data on location, time of day and time of year to find valuable information, such as sun height and angle.
Sun angle has a great impact on climate. When the sun's angle is low, the light is spread over a greater area. This is why midday, when the sun is directly overhead and its angle is high, is hotter than morning or evening. Sun angle is also helpful in positioning solar panels for optimum energy yield.Learn more about Our Sun
The sun appears to set when it vanishes over the western horizon as the Earth rotates away from the sun. Depending on the Earth's tilt at a particular time of year, the sun sets either slightly north or south of due west.Full Answer >
Shadows change length throughout the day because the angle at which the sun shines on stationary objects changes with the Earth’s rotation. For example, early in the morning, when the sun is near the horizon, it casts long shadows when an object blocks the light. Conversely, when the sun is high overhead during the middle of the day, the shadows become shorter, as the angle of the sun has changed.Full Answer >
The sun is mainly made up of 75 percent hydrogen and 25 percent helium by mass; the sun's is also composed of less than 0.1 percent various metals and elements, including neon, iron, oxygen and carbon. These atoms form hot plasma that is interwoven with the sun´s magnetic fields.Full Answer >
The diameter of the sun is approximately 864,938 miles, though there is a slight difference between its polar and equatorial diameters. As the sun is nearly in the shape of a perfect sphere, this diameter difference is only about 6.2 miles.Full Answer >