Radiation and health
Radiation is the emission of energy as electromagnetic waves or moving subatomic particles. Natural radiation comes from many naturally occurring radioactive materials found in soil,
Solar energy
OverviewPotentialThermal energyConcentrated solar powerArchitecture and urban planningAgriculture and horticultureTransportFuel production
The Earth receives 174 petawatts (PW) of incoming solar radiation (insolation) at the upper atmosphere. Approximately 30% is reflected back to space while the rest, 122 PW, is absorbed by clouds, oceans and land masses. The spectrum of solar light at the Earth''s surface is mostly spread across the visible and near-infrared ranges with a small part in the near-ultraviolet. Most of the world''s population live in areas with insolation
Radiation
Radiation is energy that travels in the form of waves or particles and is part of our everyday environment. People are exposed to radiation from cosmic rays, as well as to radioactive
Ionizing radiation and health effects
WHO fact sheet on ionizing radiation, health effects and protective measures: includes key facts, definition, sources, type of exposure, health effects, nuclear emergencies, WHO response.
Radiation: Ultraviolet (UV) radiation
Everyone is exposed to UV radiation from the sun and an increasing number of people are exposed to artificial sources used in industry, commerce and recreation. The sun is by far the
Radiation: The Chernobyl accident
Among those who survived radiation sickness, recovery took several years. Many of them developed radiation-induced cataracts in the first few years after the accident. Recent studies of the
Solar explained
People have used the sun''s rays (solar radiation) for thousands of years for warmth and
الإشعاع والصحة
يمكن أن يفاقم التعرض المفرط لجرعات الإشعاع خطر الإصابة بأنواع معينة من السرطان في الأمد الطويل. فقد يتسرب أثناء الطوارئ النووية اليود المشع الذي يؤدي استنشاقه أو ابتلاعه إلى تركزه في الغدة الدرقية وتفاقم خطر الإصابة
Enhancing radiation safety in health care
The medical use of ionizing radiation has expanded worldwide. Advanced technology has opened new horizons to diagnostics and interventional radiology, nuclear medicine and radiotherapy.
Radiation and health
We work to strengthen radiation protection of the public, patients and workers worldwide. We provide Member States with evidence-based guidance, tools and technical advice on public health issues
Radiation: The known health effects of ultraviolet radiation
UV radiation can cause short- and long-term health effects on the skin. In addition to the well-known short-term effects such as sunburn or allergic reactions, long-term effects like skin cancer
Radiation emergencies
Radiation emergencies can greatly impact human health and the environment. The impact will vary considerably, depending on the scenario, scale of the emergency, type of radiation and
How Does Solar Work?
Solar technologies convert sunlight into electrical energy either through photovoltaic (PV) panels or through mirrors that concentrate solar radiation. This energy can be used to generate electricity or be