When The Sun Is Directly On The Top Of Head It As Referred To?

What type of system for measuring solar radiation can measure 180 degrees of view?

pyranometerA pyranometer measures the solar radiation received by a plane surface from a 180 ° field of view angle..

Where is pyranometer used?

Thermopile pyranometers are frequently used in meteorology, climatology, climate change research, building engineering physics, photovoltaic systems, and monitoring of photovoltaic power stations.

What state has the best weather?

Which U.S. States Have The Best Climate Year Round?California. LA tops the list, and California has many other cities on the south and central coasts where the weather is pretty great all year round, such as Long Beach, Santa Barbara, Santa Maria and San Diego. … Hawaii. … Texas. … Georgia. … Florida. … South Carolina. … Delaware. … North Carolina.More items…•

What type of energy is the sun?

All of the energy from the Sun that reaches the Earth arrives as solar radiation, part of a large collection of energy called the electromagnetic radiation spectrum. Solar radiation includes visible light, ultraviolet light, infrared, radio waves, X-rays, and gamma rays. Radiation is one way to transfer heat.

What controls how much radiation the sun emits?

Q1: What controls how much radiation the Sun emits? Sunspots are not the primary control. The distance from the Sun to the Earth is approximately 150 million kilometers; at this distance, Earth intercepts a tiny amount of the radiation emitted by the Sun. The law that explains this is known as the Inverse Square Law.

Which type of device is used to measure solar irradiance on a planar surface?

pyrheliometerDirect solar irradiance is the rate of solar energy arriving at the Earth’s surface from the Sun’s direct beam on a plane perpendicular to it and is measured by a device mounted on a solar tracker called a pyrheliometer.

What state gets the most sunlight?

ArizonaYuma, Arizona tops the list of places in United States with the most sun. Generally it’s sunny in Yuma for 90% of the time from sunrise to sunset. In fact, with its typical 4300 sunny hours a year, Yuma achieves the world record for most recorded annual average sunshine.

In what form is solar energy is radiated from the sun?

Much of the energy from the Sun arrives on Earth in the form of infrared radiation. Sunlight in space at the top of Earth’s atmosphere at a power of 1366 watts/m2 is composed (by total energy) of about 50% infrared light, 40% visible light, and 10% ultraviolet light.

How many watts is the sunlight?

The Sun releases an estimated 384.6 yotta watts (3.846×1026 watts) of energy in the form of light and other forms of radiation. We are able to survive on Earth because the energy is spread over the area of a sphere with a radius of approximately 93,000,000 miles.

What is the instrument used to measure sunlight?

Sunshine is measured using either Campbell-Stokes sunshine recorders or modern sunshine sensors. A pyranometer is used for measuring global radiation.

What is the cloudiest state?

AlaskaMany consider Alaska to be the cloudiest state in the nation, but actually, the majority of Alaska gets just as much sun as the Great Plains. The shore along the Gulf of Alaska, however, is an entirely different story. Juneau, for instance, averages just 44 days of sun per year.

How is OTEC caused?

Ocean thermal energy conversion (OTEC) is a process or technology for producing energy by harnessing the temperature differences (thermal gradients) between ocean surface waters and deep ocean waters. Energy from the sun heats the surface water of the ocean.

What part of the earth receives the most sunlight?

the equatorThe sun’s rays strike Earth’s surface most directly at the equator. This focuses the rays on a small area. Because the rays hit more directly, the area is heated more.

Which is the angle made line joining the centers of the sun and the earth with the projection of this line on the equatorial plane?

Solar declination can also be defined as the angle between the line joining the centers of the Sun and the Earth and its projection on the equatorial plane. The solar declination changes mainly due to the rotation of Earth about an axis. Its maximum value is 23.45° on 21 December and the minimum is – 23.45° on 21 June.

What is the hour angle at 10 am?

EXAMPLE: 10 am local time has the sun 2 hours east of your local meridian. This is 22 hours west of that meridian hence the Hour Angle is 22 hours.

How much is the energy available in the winds over the earth surface is estimated to be?

Explanation: The energy available in the winds over the earth surface is estimated to be 1.6 X 107 MW which is almost the same as the present day energy consumption.

Which part of the Earth receives most?

the equatorEarth receives different amounts of solar energy at different latitudes, with the most at the equator and the least at the poles.

What is the least sunny state?

The absolute least sunny county in the lower U.S. is Island County, Wash. On an average day, it gets only about 60 percent of the solar radiation of a typical county in Southern California. The states bordering the Great Lakes — from Minnesota to New York — are all at the bottom of the sunlight distribution.