Earth Friendly Products

Written by Aaron Pratt

Earth Friendly Products and technologies are not just for those who live in grass huts and run to Canada during times of war. There are many really cool high tech and earth friendly products onrepparttar market today that just need a little exposure to becomerepparttar 136264 next biggest thing!

Think of an expensive, fully applianced home on a pristine lake with a gleaming metal rooftop covered with solar panels. If you look closelyrepparttar 136265 windows on this house are sensitive to light and turn in color like expensive sunglasses. You see rain barrels attached to downspout tubes that supply beautiful rain gardens and goldfish ponds with greywater. Go ahead, walk downrepparttar 136266 lush green lawn (that is naturally fertilized with compost) torepparttar 136267 waters edge.

Growing Plants with LED's

Written by Mihaela Lica

In some dictionaries life is defined, as a power that demonstrates a purpose to feed, process matter into energy, grow, and reproduce. Life means existence, a state of being. No matter how we look atrepparttar definitions, one thing is clear: life isrepparttar 136066 energy drivingrepparttar 136067 universe and all its happenings, and for humans and allrepparttar 136068 living organisms, life, or being alive, is a force entirely dependent on special factors such as air, water, light and much more elements that interact to support existence in all its forms and each of them is equally important forrepparttar 136069 survival ofrepparttar 136070 species...

All these resources are an abundant presence on Earth, but nothing can last forever. Polluted water is not usable, air is itself contaminated on many parts ofrepparttar 136071 Globe, mineral resources are non-renewable and light… natural light has its benefits but also it can constitute a danger forrepparttar 136072 species if we considerrepparttar 136073 UV emissions reaching Earth’s atmosphere.

Light influences all life on Earth directly or indirectly. Plants need light for photosynthesis, therefore for growing and in exchange they forward their energy torepparttar 136074 animals that consume them. Atrepparttar 136075 same time animals need light for a harmonious evolution and even nocturnal ones require some low level illumination. Lack of natural light causes various disorders by people andrepparttar 136076 same happens by plants and animals.

UV light can harm living organisms in several ways. For example plants overexposed to UV light reduce size and are more susceptible to specific diseases. The light coming direct fromrepparttar 136077 sun sends to earth three types of ultraviolet: UV-A (380-315 nm), UV-B (315-280 nm) and UV-C (280-10 nm). Due torepparttar 136078 absorption inrepparttar 136079 atmosphere's ozone layer, 99% ofrepparttar 136080 ultraviolet light that reachesrepparttar 136081 Earth's surface is UV-A.

While UV-A causes plants only a little harm, UV-B, which is a shorter wavelength, can damage plant tissue and in humans it can cause skin cancer. UV-C isrepparttar 136082 part fromrepparttar 136083 UV spectrum withrepparttar 136084 shortest wavelength and all bacteria and virus get deadly sunburn in an artificial UV-C filter system. Certainly UV light has its paradoxes: even if it is harmful in one way, it is useful in another. Medicine is using this artificial UV light to cure difficult skin conditions such as psoriasis eczema, lymphoma, acne, a-topic dermatitis, and so on.

Fact is that plants don’t need too much UV light, onrepparttar 136085 contrary. This is why crop production with artificial light means that will eliminaterepparttar 136086 dangerous UV emissions seems to berepparttar 136087 next logical step.

Growing Plants Technology - Crop Production Systems

The target of crop production systems is to develop innovative technologies that lowerrepparttar 136088 costs of harvest and ensure ecologically aware crop farming.

The crop production systems do not disregard important factors that influence plant development: temperature, humidity, light, carbon dioxide, water and nutrients. All these blend to createrepparttar 136089 ideal environment for a plant to grow and reproduce as well as they influence size, seeds, plant health and so on. Each plant will progress in its own manner, depending onrepparttar 136090 environment. Since a long time already biologists are studyingrepparttar 136091 factors that influence vegetation’s evolution. Light is a very important factor and researchers were able to determine exactly which wavelengths arerepparttar 136092 ones plants need for their growth. Some colours in light rays are essential for good plant evolution. Vegetation mirror and receive a small amount of energy from yellow and green emissions ofrepparttar 136093 visible spectrum. Howeverrepparttar 136094 red and blue fractions ofrepparttar 136095 light continuum arerepparttar 136096 most valuable energy resources for plant life, and plants necessitate more red (625 to 675 nm) than blue (400 to 470nm). Yellow (525 nm) triggers photosynthesis too, while IR influences seed spurring and UV colour and scent.

How Light Colour Influences Plant Growth

Blue light: plants react torepparttar 136097 intensity of blue light. Lesseningrepparttar 136098 blue light will cause poor growth –repparttar 136099 strength ofrepparttar 136100 radiation in any other part ofrepparttar 136101 spectrum is not as important asrepparttar 136102 intensity ofrepparttar 136103 blue, which shapes height and quality.

Red (660 nm) and infrared (730 nm) (also known as IR or far red) light: Intensifyingrepparttar 136104 total of IR in relation with 660 nm red makes plants grow tall and thin. Onrepparttar 136105 other hand if red is increased while IR diminished, plants will be short but thick. Plant reactions are not linear withrepparttar 136106 red/far red ratio and they can also vary in their response to red and far red light.

Ultraviolet light (UV): While overexposure is dangerous, small amounts of UV light can be beneficial forrepparttar 136107 flora. In many cases UV light is a very important cause for colours, taste and aroma. But UV-C and UV-B are believed to stop plant spread and this is why they have to be removed fromrepparttar 136108 light under which plants are developed in green houses by UV stabilisers or glass. Removal ofrepparttar 136109 UV up to 400nm is might be effective also in case of virus carrier insects (as insects see partly in UV).

Direct light fromrepparttar 136110 Sun distributesrepparttar 136111 useful wavelengths only on special times ofrepparttar 136112 day and in small quantum enough for a harmonious growth in some parts ofrepparttar 136113 Earth, yet not enough on others.

Crop production systems are dealing with such problems and find ways to replace natural light with artificial light. The idea of growing plants under artificial illuminators is not new at all. Long time ago NASA started to grow plants in space, andrepparttar 136114 results were astonishing. Nowadays we know that by usingrepparttar 136115 correct wavelength plants develop harmonious and healthy, sure if they have allrepparttar 136116 other conditions ensured. Yet getting light ofrepparttar 136117 correct wavelength is not an easy task, especially if one takes into accountrepparttar 136118 costs and efficiency of such light sources.

LED Lighting Technologies to Substitute Natural Light

To substitute natural light is quite difficult also if you consider how hard it is to obtain light nearrepparttar 136119 visible part ofrepparttar 136120 spectrum with traditional luminaries. Light emitting diodes are here to change that difficulty.

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