PV Gap

Marion Said:

According to the conservation of energy, where does the solar energy from summer go when winter comes?

We Answered:

According to the conservation of energy, where does the solar energy from summer go when winter comes?
The ENTIRE earth receives the same total amount of solar energy from the Sun all year long!!

In the winter, the Earth is tilted away the Sun, and in the summer, the Earth is tilted toward the Sun. In the northern hemisphere, the shortest day, middle of winter, occurs on December 21; and the longest day occurs on June 21.

IN THE NORTHERN HEMISPHERE:
The axis of rotation of the Earth is tilted 23.5°.

As the Earth moves around the sun ½ of its yearly orbit, the intensity of the solar energy received by the Northern hemisphere increases as the time of the year changes December 21 to June 21.

As the Earth moves around the sun the other ½ of its yearly orbit, the intensity of the solar energy received by the Northern hemisphere decreases as the time of the year changes June 21 to December 21.

On 2 days of the year, March 20 and September 23, the day and night = 12 hours. These days are called Equinox. This means the land receives solar energy for 12 hours.

The intensity increases from 0 to maximum, from sunrise to noon; then the intensity decreases from maximum to 0 at sunset.

In the northern hemisphere, Christmas is cold day in summer.

IN THE SOUTHERN HEMISPHERE: THE OPPOSITE OCCURS!!!

In the Southern hemisphere, Christmas is warm day in summer.

Winter in Southern hemisphere is happening at the same time as summer in the Northern hemisphere.

In the winter, the Earth is still tilted away the Sun, and in the summer, the Earth is still tilted toward the Sun. But, in the southern hemisphere, the shortest day, middle of winter, occurs on June 21; and the longest day occurs on December 21.
The Southern hemisphere is receiving less than ½ of solar energy on the same day when the Northern hemisphere is receiving more than ½ of solar energy.

On the equinox days, the Southern hemisphere is receiving the same amount of solar energy as the Northern hemisphere.

The result of the axis of rotation of the Earth, 23.5°; and the orbit of the Earth around the Sun in 360 days; causes the total amount of solar energy to SHARED UNEQAUALLY by each hemisphere!!

One any day, the total solar energy coming from the Sun to the Entire Earth is the same!

One any day, the sum of solar energy received by the Northern hemisphere and the Southern hemisphere equals the total solar energy coming from the Sun to the Entire Earth!!

Conservation of Solar energy:
Solar energy in Southern hemisphere + Solar energy Northern hemisphere = Total solar energy from Sun


The following web site has a great video to illustrate the effect of the tilt and rotation around the Sun!!

http:
www.
Youtube.com/watch?v=DuiQvPLWziQ

Maxine Said:

does law of conservation of energy hold good for this case?

We Answered:

Eventually, al energy goes to heat. with the sound waves, the friction absorbs the energy and converts it to heat.
With the sun, the heat energy is still there, it has either been absorbed by the microparticles of space or it has decayed into empty space. In a finite universe, eventually the temperature would rise. but, as far as we know this is an infinite universe, so the temperature will remain the same.

Roger Said:

Home energy conservation... Thinking about adding solar screens?

We Answered:

ya...........totally....i agree with you...