greenhouse covering that is exceptional greenhouse cover

Many of us are routinely advised by our dermatologists to put on our sunscreen before we go outside and to even add more sunscreen in the middle of the day when the sun’s UV rays are most intense. Wouldn’t it be nice if our bodies could sense how much UV is reaching our skin and then automatically adjust our natural sunscreen protection (in our case the pigment melanin) so as to avoid the negative effects of high UV exposure, such as skin cancer? Well, it seems that many green plants do such a thing on a regular basis. Plants have their own natural UV sunscreens (colorless pigments called flavonoids), which accumulate in their skin (epidermis), and these chemicals filter out much of the detrimental UV before it reaches sensitive photosynthetic tissue inside their leaves (Fig. 1.).

This tutorial introduces electromagnetic radiation in physics

Other sections include motion, heat, electricity, magnetism, and modern physics.

Do Indoor Plants Really Clean the Air? - Live Science

Ozone is a gas consisting of three oxygen molecules (O3) instead of two (O2) like the oxygen we breathe. Generally, ozone is present in the atmosphere in small amounts, in a layer 10 to 60 kilometres above the earth (ozonosphere) and in close proximity to the ground. The ozone layer serves as protective shield against ultraviolet (UV) rays. The formation of ozone at low altitudes is mainly due to two factors: In the ozonosphere, ozone is formed when a molecule of oxygen (O2) is split by UV rays so that oxygen atoms can combine with another molecule to make a molecule of ozone (O+O+O = O3), which, in turn, is split by UV rays in one molecule of oxygen and one free molecule (O2+O), which, back in circulation, pass through this process forever absorbing UV rays. The layer where these reactions are more likely to happen is 25 km above the earth, in the stratosphere. When ozone is missing or reduced, the UV light reaches directly the earth surface causing damages to flora (inhibiting the photosynthesis) and fauna, including human beings (skin cancer, eye injuries, weakening of the immune system etc). The explanation is simple: UV rays are harmful to living creatures because with their low wavelength they have high radiant energy.

Vastu Factors | Sun And It's Effects | Architecture Ideas

The Exo Terra Reptile UVB150 has a very high UVB output similar to sunlight in deserts. These locations receive more direct sunlight, therefore desert reptiles are more exposed to UV radiation than any other type of reptile. This bulb can also be used on terrariums with denser screen covers to ensure sufficient UVB penetration. Dense screens can filter out up to 50% of the UVB rays. The high Vitamin D3 yield index ensures vitamin D3 photosynthesis to aid calcium absorption and prevent metabolic diseases.

Sure, that potted fern is pretty, but can it really spruce up the air quality in your home
Learn about the importance of UV light, calcium, and vitamin D for the health of your reptile.

09/02/2010 · Annals of Applied Biology, ..

Electromagnetic Radiation, Radio Waves, Energy, Photons and Radio Communications

What Is Ultraviolet (UV) Radiation? - American Cancer …

How Does UV Exposure Affect Plants & Animals? | Hunker

How Does UV Exposure Affect Plants & Animals