We need to change our mindset. We speak of producing oil as if it were made in the factory. But only nature produces oil All we do is mine and burn it up.
We must turn to the SUN and seek elegant ways to live within the renewable energy income it bestows upon us.
The sun is..
the source of…
all energy…
..on earth.
Our ancestors…
..defined the sun
..treated it…
…like God !
they bowed…
and prayed to it.
Life on Earth evolved and was nurtured by the Sun. The Sun keeps delivering large amounts of energy to earth each second.
The Sun will keep doing this for the next 5 billion years.
Plants bend to catch the Sun and produce all their food using sunshine.
Kings in the olden age pegged their ancestors to the sun-some called themselves Suryavanshis- descendants of the sun.
The poet Rabindranath Tagore wrote of Konark
"Here the language of stone surpasses the language of man."
The 13th century Konark temple in Odisha, India is dedicated to the sun god-SURYA
This chariot shaped stone temple has twelve pairs of exquisitely decorated wheels drawn by seven spirited horses. The temple symbolizes the majestic stride of the sun god.
SUN IN DIFFERENT CULTURES
RA was the most important God of the Egyptians. He was considered the lord of all the gods and was depicted in human form with a falcon head, crowned with the sun disc encircled by a sacred cobra.
The Japanese sun goddess AMATERASU is said to have emerged out of a cave and brought sunlight to the world.and fold it, and fold it again, and again, and again.
If the Earth kept absorbing the sun's energy day-after-day it would become boiling hot Fortunately, the earth gets rid of the energy it gains during the day at night.
This balance between energy coming in by day and going out by night keeps the temperature just right on earth
The sun is 400 times wider than the moon. Why then do they look the same size from the earth?
two
By the 6th fold it will be 1-centimeter thick By the 11th fold it will be 32-centimeter thick, by the 15th fold - 5-meters. and At the 20th fold it measures 160-meters.
At the 24th fold - 2.5-kilometers, and by fold 30 it is 160-kilometers high. At the 35th fold it is 5000-kilometers. At the 43rd fold it will reach the moon. And by the fold 52 will stretch from here to the sun!
Take a piece of paper.
How many earths will fill the sun?
Because the sun is 400 times farther from the earth than the moon.
GREEK FREAK
Socrates said, "An ideal house should be cool in summer and warm in winter But this was not easy to achieve 2500 years ago. The Greeks had no artificial means of cooling their homes during summer or heating them during winter.
Forests in Greece were destroyed for wood needed for cooking and heating. Trees were also required to build homes and ships. By the 5th century B. C. there were hardly any trees in Greece. When wood became scarce the search for alternatives began.
Fortunately, the sun was free and plentiful. The Greeks learnt to warm their houses with the winter sun and avoided it during the summers The Greeks were pioneering solar architects.
The Greeks knew that the sun was low in the sky during the winters and overhead during the summers.
So, they built their houses such that the winter sunlight entered and warmed the houses. With eaves, and overhanging roofs they kept the houses cool during summers.
GLASS CLASS
The Romans used even more wood than the Greeks. Wood was in heavy demand for building houses and ships and for heating public baths and private villas.
Once the Romans ran out of wood they had no choice but to learn from the Greeks The Romans didn't just copy the Greeks. They used
even better and advanced solar technology
In the 1st Century AD, the Romans used transparent materials like mica to make windows. This let the sunlight in but kept out the rain, snow and cold.
They also positioned their houses to catch the sun.
The Romans were the first to use glass to increase solar heating. The sunlight got in through the glass and warmed the house in winter. The warm air couldn't get out and stayed in, raising the temperature inside the house
The Romans also built greenhouses and public baths. They were the first to enact sun rights in their laws.
Roman baths had large glass windows. They admitted plenty of sunlight and slowed the escape of warm air. Glass windows were made by pressing molten glass with a roller on a flat surface. The first transparent coverings of mica were made by splitting layers into thin sheets.
The Romans built Greenhouses (solar traps) to grow fruits and vegetables in winter
The Roman Emperor Tiberius loved cucumbers
and wanted them the whole year round. The
gardeners thought of a great idea. They mounte
cucumber beds on trolleys which could be whee
into the sun. In winter they covered them with
transparent material to hold the solar heat
The Romans respected the su
Doctors considered the sun good for many alime
Can the Sun's rays be concentrated into a small area? More energy thus pour into this small area raising its temperature. The Greeks that light reflecting from a curved polished metal that was concave kon kave = curved inwards) woul polished metal that was concep
This can be understood through a simple experiment. Fix 3
into an old rubber slipper. The pencils at right angles stand for
parallel rays of light striking a plane mirror. On bending the wom
inwards the pencils will meet at a point called the focus.
In 1909, an American engineer William J. Bailey designed a day-and-night solar water heater which eventually revolutionised the industry.) Bailey separated the collector and the storage tank.
As the water in the insulated tank cooled off very slowly there was always warm water for a wash in the morning.
During the day he let the warm water from the 'hot box' run into an insulated storage tank in the kitchen. No water was added at night.
Bailey also added fin-like ABSORBER PLATES to improve the efficiency of collector pipes.