This article will describe how and why
sun exposure is dangerous especially when combined with a depleted
ozone layer. Our sun emits a spectrum of light. The visible light
spectrum which we can see are the colours of the rainbow with red
having the lowest frequency and violet having the highest frequency.
There are colours emitted by the sun with frequencies that the human
eye cannot detect. Ultraviolet or UV radiation is invisible to the
human eye and has a frequency higher than that of violet. Ultraviolet
radiation is divided in to three frequencies UVA UVB and UVC. UVC
radiation has the highest frequency of the tree and is almost
completely blocked by the ozone layer. Which leaves us primarily
exposed to UVA and UVB radiation. Lets first look at UVB radiation.
UVB radiation only penetrates the surface of the Skin superficially
and it is the main cause of Sunburns. It Damages the Carotinecites
which are the Cells that our skin is made of. Our immune system will
respond by increasing Blood flow to the damaged area and producing
enzymes that cause inflammation. UVB also contributes to skin cancer
and causes cataracts.
UVA radiation has a lower frequency and
penetrates deep in to the lower layer of the skin where it will cause
the release of enzymes that break up the collagen and the elastic
fibers. This will lead to rapid ageing of the skin. Because I know
you are not going to get this unless I am really going out of my way
to make a story of this. Many people tan because they want to look
good, but the truth is if you tan regularly you will not look good
for very long. Because UVA will almost literally age your skin
overnight. Skin will become slack and loose its elasticity. The
breakup of collagen will make you very wrinkly very soon. Your skin
is going to look like the skin of an orange quiet literally, and you
absolutely must understand that this damage is irreversible. But what
is perhaps even more alarming is the UVA radiations ability to cause
skin cancer such as melanoma, and you should be aware if you thought
the sun was dangerous and I'm telling you explicitly that it is,
Tanning booths are much more dangerous than the sun. Tanning boots
emit around 90% UVA radiation. Its UVB emission is therefore low in
relation which might make it seem as if you'd burn slower while the
UVA is doing extreme damage ageing your skin and making the
possibility of developing skin cancer a possibility.
Where is the Sun most dangerous.
The Sun is most dangerous when it
stands highest in the sky which is exactly halfway between sunrise
and sunset. The Angel at which the Sun hits the earth is a mayor
contributing factor to the amount of radiation that reaches the
earths surface, The closer the angel is to 90 degrees as in the sun
being right above your head, the thinner the layer of ozone and
atmosphere the sun has to pass trough which makes it more dangerous.
The angle is not only determined by what time of the day it is but
also by the latitude of your geographical location and the season.
The closer to equator you are the to higher the sun will stand and
the angle is always greater in summe than it is in winter. The final
factor is of course the condition of the ozone layer above you If
there is a gaping hole in the ozone radiation can be severe even if
the sun stands at a lower angel.
Sun Protection
Almost all sunscreens only block UVB
radiation which will give you falce security. The blocking of UVB
radiation will keep you from getting sunburned while UVA radiation is
still fully penetrating your skin breaking down your collagen which
ages your skin and increases your risk of skin cancer. SPF factors
are an indicator of how long it will keep you from getting sunburned
and is therefore only an indicator of UVB protection not UVA.
It is best if you Protect yourself by
covering up in long sleeve clothes and a sun hat or legionars hat.
And don't forget your forearms and hands also need protection.
Keep in mind If you are a white skinned
person evolution has not designed you to expose yourself to
equatorial sunlight. In the north where fair skinned people originate
there is a shallow angle between the earths surface and the sun.
This article was written for your own
good please take it seriously. The Kaiser
minding your healt. Am I not nice.
Where the sun gets its energy from for
the curious minds.
The Sun is 5 billion years old and will
burn for another 5 billion years before it runs out of nuclear fuel.
The Suns energy comes from a process called thermo nuclear fusion. It
is a sphere of superheated plasma. Under this high heat and pressure
in the core of the sun the plasma gets compacted to a density several
times that of lead. This causes the positively charged helium
nuclei's which would normally repel each other to smash together
with enough force to jump across the potential wall and fuse in to
helium atoms. In the world of quantum mechanics the classical
principal of conservation of mass appears to be violated. This means
that the constituent particles namely Protons and Neutrons of
different Elements do not have the exact same mass. This violation of
the conservation of mass is called the mass defect. Mass and energy
are the same thing, Einstains famous equation “Energy = Mass times
the speed of light squared” can be used to calculate exactly how
much energy is being generated by the mass defect during the thermo
nuclear fusion process. The mass defect between the hydrogen being
fused and the resulting helium is the exact amount of mass that is
turned in to energy. The sun converts approximately 600 million tons
oh hydrogen in to 595 million tons of helium every second. That is a
total mass defect of 5 million tons every second.