Electromagnetic radiation, such as light, is composed of particles called photons that travel through space in a wave motion (Fig. Figure 2: The electromagnetic spectrum, showing relative wavelengths and frequencies, with visible light expanded. As you can see from Figure 2, white light is not one of the colors that are a part of the visible spectrum. A transmission diffraction grating is made up of a transparent material with regularly spaced grooves cut into it so that a beam of light passing through is separated out. When white light strikes an object, usually some of the radiation is reflected off of the object and some is absorbed. If instead of shining white light on a solid object, we shine it through a transparent solution, we will see a similar effect. Spectrophotometers are instruments that measure which wavelengths of light have been transmitted and absorbed by solutions, and also tells how much of the light has been absorbed.
White light from the light source will pass through the sample and some of the light will be absorbed. For example, at the bottom of the spectrum radio waves have photons with low energies, so their wavelengths are long with peaks that are far apart.
UVA rays have the longest wavelengths, followed by UVB, and UVC rays which have the shortest wavelengths. Certain oral and topical medicines, such as antibiotics, birth control pills, and benzoyl peroxide products, as well as some cosmetics, may increase skin and eye sensitivity to UV in all skin types. Exposure to UVB radiation helps the skin produce a type of vitamin D, (vitamin D3), which plays an important role - along with calcium - in bone and muscle health.
UV radiation, in the form of lasers, lamps, or a combination of these devices and topical medications that increase UV sensitivity, are sometimes used to treat patients with certain diseases who have not responded to other methods of therapy. Phototherapy involves exposing a patient to a carefully monitored dose of UV radiation on a regular schedule.
UV exposure is also greater in areas of snow, sand, pavement, and water due to the reflective properties of these surfaces. UV is most intense at noon when the sun is at its highest point in the sky, and UV rays have the least distance to travel through the atmosphere. Many people believe that you cannot get sunburned on a cloudy day; this is simply not the case. Some surfaces, such as snow, sand, grass, or water can reflect much of the UV radiation that reaches them. The Ultraviolet Index (UVI) is a rating scale, with numbers from 1 to 11, which indicate the amount of skin-damaging UV rays reaching the Earth’s surface during the day.
The daily UVI forecasts the amount of UV reaching your area at noon when the sun typically reaches its highest point in the sky. The Environmental Protection Agency (EPA) offers UVI forecasts by ZIP code on their UV Index page. Many illustrations of the UVI use a system of colors to designate levels of UV exposure for a particular area on the map.
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The Ritz-Carlton in Qatar presidential suite has a private elevator, four guest baths and captivating terrace views in every direction. The Fairmont Kea Lani located on the Southern part of Maui in Wailea has the best sunsets on the entire island.
Pow Wow Hawaia€™i is a gathering of contemporary artists that engages with the broader community in the process and creation of art in the streets, For the second annual event. Boundary pushing architectural firm Zecc Architects breathed a decidedly modern life into an old world cathedral in the Netherlands by redesigning it from the ground up, turning an antiquated house of worship into a stunningly beautiful home.

Hanging Out With LionsBrave man hanging out with lions on a Zebra striped car in South Africa. When checked, Shutterstock's safe search screens restricted content and excludes it from your search results. Ever since Edison threw the switch on the first commercial power plant in 1882, mankind has been increasing the use of electric energy.
The electromagnetic spectrum consists of energy vibrating at various rates from a single vibration per second to billions of vibrations per second. All life began and evolved in this relatively constant and low level radiation environment over the past 3 billion years. It seems reasonable to assume that basic body and brain functions are likely regulated by naturally occurring ELF radiations. This work with mice has shown a pattern of changes in hormones, body weight, and blood chemistry similar to those found in animals under stress. A recent pilot study into the effects of grounding humans showed that most subjects produced too much cortisol at night and too little during the day. The stress adaptation mechanism described by stress authority Hans Selye activates certain brain areas in preparation for maximum effort to meet the challenge at hand. In mice or humans the continuation of such stress could be expected to yield an increase in conditions like hypertension and behavioral abnormalities. The pragmatic response to these and other findings should be to methodically search for and re-duce sources of stress. The bedroom should designed to be a healing place because sleep is when the greatest healing and rejuvenation of the body takes place.
Building Biologists in the US and Europe have been investigating homes for environmental health problems for over the last 30 years. The house electrical system vibrates at 60 cycles per second in the Extra Low Frequency (ELF) part of the electromagnetic spectrum. The thousands of measurements have shown that people are sleeping with a body voltage of 2000 to 10,000 milliVolts AC. The International Institute for Baubiologie and Ecology (IBE) has developed sleeping room guidelines. As a precaution and especially with regard to sensitive and ill people, remediation should be carried out whenever it is possible. As you can see in almost all cases people are sleeping with a body voltage above 1000 milliVolts in Extreme Concern range. Dirty Electricity is produced by every one of the billions of electronic devices that are plugged into the wall outlets of or homes, offices and factories. One of the unfortunate results of the unprecedented, monumental increase in man-made radiations that surround us is the development of electromagnetic hypersensitivity syndrome.
You can take the following steps to reduce your exposure to AC Electric, Magnetic Fields and DE while in bed. UV radiation is only one form of radiation and it is measured on a scientific scale called the electromagnetic (EM) spectrum. All EM radiation (also called EM energy) is made up of minute packets of energy or 'particles,' called photons, which travel in a wave-like pattern and move at the speed of light. The photons of microwaves have higher energies, followed by infrared waves, UV rays, and X-rays. While UVA and UVB rays are transmitted through the atmosphere, all UVC and some UVB rays are absorbed by the Earth’s ozone layer. Sunburn is a sign of short-term overexposure, while premature aging and skin cancer are side effects of prolonged UV exposure.
However, the amount of UVB exposure needed to obtain a benefit depends on several factors, such as: the amount of vitamin D in your diet, skin color, sunscreen use, clothing, where you live (latitude and altitude), time of day, and time of year.

Also known as phototherapy, this method of UV exposure is performed by a trained healthcare professional under the supervision of a dermatologist. In some cases, effective therapy requires that a patient’s skin is first treated with a prescription drug, ointment, or bath that increases its UV sensitivity. Because the sun is directly over the equator, UV rays only travel a short distance through the atmosphere to reach these areas. Exposure is also decreased because UV rays must travel a greater distance through ozone-rich portions of the atmosphere to reach the earth’s surface. Higher altitudes have greater UV exposure because there is less atmosphere to absorb UV rays.
During the summer months the sun is in a more direct angle, resulting in a greater amount of UV radiation. Especially in the hot summer months, it is a good idea to remain indoors during the peak sun hours of 10am and 4pm. Even under cloud cover it is possible to damage your skin and eyes, and cause long-term damage. Sunglasses rated for 100% UV protection, a wide-brim hat, and broad-spectrum sunscreen can help protect your eyes and skin from reflected UV rays. The World Health Organization (WHO) has developed an internationally recognized system of colors corresponding to levels of the UVI. Suspended 192 metres high is the 1.2 metre wide ledge that circles the widest part of Aucklanda€™s Sky Tower.
Today we live in a sea of electromagnetic radiation (EMR) that did not exist during our biological development.
Becker did his research has concentrated research on the effect of man-made 60 Hertz EMR using field strengths similar to those found near high voltage transmission lines, in buildings with wiring errors, and near many appliances. Likely sources are polluted indoor air due to chemicals and molds, polluted drinking, cooking and bathing water, processed and other devitalized foods and electromagnetic radiation particularly in the bedroom. It reflects the unexposed natural conditions or the common and nearly inevitable background level of our modern living environment. In this category international guidelines and recommendations for public and occupational exposures may be reached or even exceeded. This terrible affliction is increasing at a disturbing rate and is now responsible for much pain and suffering. At the top of the spectrum, gamma rays have photons with very high energies and short wavelengths with peaks that are close together. Also, the FDA has not cleared or approved any indoor tanning device for producing Vitamin D. While this type of therapy does not eliminate the negative side-effects of UV exposure, treatment is carefully supervised by a doctor to ensure that the benefits outweigh the risks. UV radiation is also the strongest near the equator because ozone in these areas is naturally thinner, so there is less to absorb the UV radiation. Becker, MD, research professor at the Upstate Medical Center, Syracuse, NY, suggests that this enormous sea of EMR may be producing stress and disease by interfering at the most basic levels of body functioning.
These ranges describe the activity level, or how energetic the photons are, and the size of the wavelength in each category.
In addition to numerous case histories, scientific studies indicate biological effects and health problems within this range.

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