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TODAY IN HISTORY

    SOLAR-POWERED FLIGHT
    November 20, 1980 - English Channel

    Steve Ptacek in Solar Challenger piloted its first solar-powered flight. The aircraft was designed and built by AeroVironment, Inc. (founded in 1971 by ultra-light airplane innovator, Dr. Paul MacCready). An earlier, 71-ft wingspan, solar-powered design, the Gossamer Penguin, after test flights, flew about 1.95 miles at a public demonstration on 7 Aug 1980. Solar Challenger built upon this experience to be a piloted, solar-powered aircraft strong enough to handle both long and high flights when encountering normal turbulence. With only a 46.5-ft wingspan, it had a huge horizontal stabilizer and had enough wing area for 16,128 solar cells. After design modifications, Ptacek flew across the English Channel flight on 7 July 1981.

    BICYCLE
    November 20, 1866 - U.S.A.

    The first U.S. patent on a rotary crank bicycle was issued to Pierre Lallemont of Paris, France (No. 59,915). With pedals applied directly to the front wheel, this so called velocipede ("fast foot") was a major advance on the old hobby horse bicycle that had to be pushed with the feet. It soon came to be known as "the bone shaker" because being made of stiff materials, straight angles and steel wheels, it gave a stiff ride over the cobblestone roads of the day. Soon indoor riding academies, similar to roller rinks, could be found in large cities. He rode on it from Ansonia, Conn. to the green at New Haven, Conn.

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RANDOM QUOTES

  • Until a man duplicates a blade of grass
    by Earth Day, Thomas Alva Edison Inventor

    "...Until a man duplicates a blade of grass, Nature can laugh at his so-called scientific knowledge. Remedies from chemicals will never stand in favorable comparison with the products of Nature, the living cell of a plant, the final result of the rays of the sun, the mother of all life...."
  • All of us have a God in us
    by Earth Day, Kenya

    "...All of us have a God in us, and that God is the spirit that unites all life, everything that is on this planet. It must be this voice that is telling me to do something, and I am sure it'as the same voice that is speaking to everybody on this planet at least everybody who seems to be concerned about the fate of the world, the fate of this planet. Wangari Maathai-Noble Peace prize winner, Deputy Minister of Environment, founder Green Belt movement in Kenya...."

RANDOM FACTS

  • Cancer Facts & Figures
    about Besides Lung Cancer

    Besides lung cancer, tobacco use also increases the risk for cancers of the mouth, lips, nasal cavity (nose) and sinuses, larynx (voice box), pharynx (throat), esophagus (swallowing tube), stomach, pancreas, kidney, bladder, uterus, cervix, colon/rectum, ovary (mucinous), and acute myeloid leukemia. Harvard Medical School
    about Eyesight Myth and Fact

    Myth: Staring at a computer screen all day is harmful to the eyes. Fact: Spending the day staring at a screen can tire or strain your eyes, but it will not hurt them. Make sure lighting doesn't create a glare on your screen. When spending long periods at your keyboard, take a break now and then to rest your eyes to reduce fatigue. Also, don't forget to blink. Your eyes need to stay lubricated to feel comfortable.

Lighting Fixtures :

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Is it time to remodel or buy a new house? Do you need ceiling fixtures for your rooms? Will you need to have different light fixtures for each room? Also decide which of these bulbs best fits your needs.

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When you first buy a house, remodel, or redecorate your house, this will be a good time to change your lighting fixtures. When redoing a room, it may take a few fixtures to bring out the room to the way it should be. Each room has a purpose and your lighting should correspond with that purpose.

You can really bring out a room with a light fixture that is bold and striking. Ceiling fixtures come in all types of designs and can drastically change the feeling of your room. Lamps can be added to add contrast the ceiling lighting. If you do a lot of reading then you will need a high intensity reading lamp.

The best types of reading lamps are those that are full spectrum lamps. These are specialty lamps and produce white light similar to the sun. Unlike regular incandescent bulbs, they create white light by emitting light frequencies like the sun does. This type of white light is good for reading and easy on the eyes.

When looking for a ceiling lamp fixture, look for functionality. If the fixture has too many design features, it can block the light and provide very little general lighting to your room.

If you room is to have computers, then a ceiling lighting fixture with indirect lighting will be best to avoid computer monitor glare. If possible try to avoid using florescent lamps in your living area since they emit light in 60 cycles which fatigue your brain and body.

The ceiling lighting is not only for the kitchen but for the other rooms like the bedroom, stairway, hallways, and recreation room.

The type of bulb you can put into a lighting fixture is only limited to the type of bulbs that are available in the market. Each bulb has a function and a specific frequency and power output in watt. When using a halogen bulb, use a fixture that will enclose this lamp in case it explodes. Full spectrum light bulbs are also available and I favor these because they mimic natural light more than any other type of bulb.

Saving energy light bulbs are nice in concept, but don?t away put out the light intensity that you need in the room. If you have multiple fixtures and you can put these energy saving bulbs. Then again depending on the room's purpose, this will determine the wattage of bulbs you use.

When looking at ceiling fixtures, consider the efficiency of the fixture. Some fixtures are beautiful to look at, but absorb the light that should go to the room. Make sure that the lamp is easy to clean otherwise you will be wishing you had bought another type of lamp. Also look to install a rheostat to control the light. This manual light control will give your bulb long life and you can adjust the intensity of the bulb to give more or less light.

Using these tips will help you setup your lighting fixture so that you don't have to replace it later. Just make sure that you use the fixtures that will complement the purpose of your room.

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  • Affordable Lamps
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  • November 30, 2014Date Added :
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