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( X-ray) X-radiation (composed of X-rays) is a form of electromagnetic radiation. X-rays have a wavelength in the range of 10 to 0.01 nanometers, corresponding to frequencies in the range 30 petahertz to 30 exahertz (30×10¹⁵Hz to 30×10¹⁸Hz) and energies in the range 120 eV to 120 keV. They are longer than gamma rays but shorter than UV rays. In many languages, X-radiation is called Röntgen radiation after one of its first investigators, Wilhelm Conrad Röntgen.

X-rays are primarily used for diagnostic radiography and crystallography. As a result, the term "X-ray" is metonymically used to refer to a radiographic image produced using this method, in addition to the method itself. X-rays are a form of ionizing radiation and as such can be dangerous.

X-rays span 3 decades in wavelength, frequency and energy. From about 0.12 to 12 keV they are classified as soft x-rays, and from about 12 to 120 keV as hard X-rays, due to their penetrating abilities.

The rem is the traditional unit of dose equivalent. This describes the energy delivered by ?- or X-radiation (indirectly ionizing radiation) for humans. The SI counterpart is the sievert (Sv). One sievert is equal to 100 rem. Because the rem is a relatively large unit, typical equivalent dose is measured in millirem (mrem) - 1/1000 rem, or in microsievert (µSv) - 1/1000000 Sv -, whereby 1 mrem equals 10 µSv.

X-ray Subcategories Exercise > Aerobics > Exercise > Weight Training > Exercise > Yoga, Pilates, Stretching & Balance > Rest, Recovery and Relaxation > Gardening > Sexual Fitness > Sexual Fitness for Aging Men > Sexual Fitness > Sexual Fitness for Aging Women > Sexual Fitness for Aging Men > > Sexual Fitness for Aging Women > > X-ray Articles Teeth around the World by Bharat Book Bureau Bharat Book.com is glad to promote a new report, Global Dental/Dentistry Devices Industry Report: Detailed Analysis of the Medical Equipment & Medical Devices Market Covering Dental Equipment, Dental Supplies, Orthodontic Products, Dental X-Ray Equip... No Need to Burn Your Way into a Great Tan - Spray Tanning is the Safest Way to Tan Today by Melanie Vasseur Skin cancer is just as prevalent today as it has been for the last several years. Given the amount of news coverage sun damaged skin gets, it is still on the rise. People still don-t head the warnings of the possible dangers of over-exposure to the s... Beach Ready Skin - do you have it? by Melanie Vasseur Your skin is vulnerable whenever you go outside of the house. Can you imagine the potential for skin problems when you bare it all in a bikini? With a few precautions you can minimize the damage done to your skin that you can spend years trying to re... Hair Removal - Pros and Cons of Waxing by Melanie Vasseur For us women, there seems to be more pressure about removing body hair than their used to be. The traditional method of shaving just isn't good enough for us anymore. Excellent results can be obtained by using hot wax hair removal. Increasing numbers... Acne Treatments Explained, Making Sense of the Array of Choices for Treatment Options by Melanie Vasseur Many people suffer with the skin condition known as acne or Zits; but there are now many treatments available which can help the condition so it is more bearable. Scientific research into this area is intense; this is good news with the range of effe... Bariatric Surgery Texas - New Rays of Hope for the Obese by Suzanne Macguire Laparoscopic Adjustable Gastric Band (LAGB) is creating ripples in the world of medicine. It is the latest weapon in humanity’s battle against obesity. Weight loss surgery has historically been considered as a solution that only came as a last resort... You Don't Have to Swim with Sting Rays to be Healthy by Dr. Doug Fullington Why I Am Afraid of the Ocean When I was 10 years old, I was vacationing with my family in St. Augustine, FL. My brother and I were lounging in the ocean on blow up plastic floats. I was lying prone on the faded orange ra... 10 Tips To Minimize Stress and Make Time For You by Tameka Alexander With all that goes on in our everyday lives, its a wonder sometimes how we make it through the day. The stress from our jobs, providing for our families, and making sure the bills get paid on time are all a part of the day to day cycle called life. S... Why I believe prayer helps to create miracles. by Ralph Morton I'd like to tell a true story of how I believe prayer helps to create miracles.I am so grateful to God for His help He has given to our family, I feel this story must be passed to others. God and the Doctors who used His gift of healing, the... Breast Cancer - In Denial after finding a Lump in the Breast by Kacy Carr Why is it that when the topic of breast cancer crops up in conversation some women tend to shy away in belief that they personally are exempt from contacting the disease? Listen up ladies breast cancer is serious and can affect any one of us at any t...