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A threshold value protecting the public from irreversible harmful effects of a chemical or physical agent.קרא עוד >

The federal agency responsible for regulating communications in the USA.קרא עוד >

An atom or molecule containing unpaired electrons.Free radicals are active and unstable.קרא עוד >

The number of waves per time unit, usually one second.  The unit of measurement is the Hertz (Hz).קרא עוד >

Continuous bands or groups of selected isolated frequencies in the electromagnetic spectrum.קרא עוד >

A type of brain tumor developing in the glia.These cells are the most common in the brain and serve as support for the neurons.קרא עוד >

A state of complete physical, mental and social wellbeing and not merely the absence of disease or infirmity.” (Source: WHO).קרא עוד >

Unit of measurement of frequency, named after the physicist Heinrich Rudolph Hertz.  It expresses the number of cycles of electromagnetic waves per given time unit, usually one second.  It is designated by the name Hz.קרא עוד >

The scientific branch of the World Health Organization that deals with research on cancer.The aim of the Agency, composed of 22 member states to date, is to advance research towards a better understanding of the causes of cancer, ways of preventing it and minimizing morbidity.In 2011 the Agency classified radio frequency radiation as a 'possible carcinogen' in humans.קרא עוד >

Independent scientific body that aims to examine and evaluate scientific knowledge relating to exposure to wave frequencies in the range of up to 300 GHz, and to provide information and guidance regarding possible health hazards of exposure to non-ionizing radiation.קרא עוד >

A medical phenomenon or a disease that develops spontaneously or is due to an unknown source.קרא עוד >

The number of new cases of a disease in a population during a defined period (usually one year).קרא עוד >

In Israel, a permit issued by the Ministry of Environmental Protection is required in order to install a source of radiation.  The permit refers to the source of radiation or a specific type of sources of radiation, and is subject to certain conditions.  Amongst these: measurement of maximal levels of exposure expected from the source of radiation based on technical data, operating the source of radiation for a defined period, and performing trial assessments over a period set by the law.קרא עוד >

Refers to the active capacity of energy, such as electromagnetic radiation energy, necessary for the removal of the electrons, which are negatively-charged, from atoms or molecules. Each basic physical element (atom) is characterized by the threshold level of ionizing energy specific to it.קרא עוד >

The high frequency range of the electromagnetic spectrum, whose lower limit passes through the range of ultraviolet light. Electromagnetic radiation in this frequency range is able to change the structure of atoms or molecules, by ionization.קרא עוד >

A segment of the electromagnetic spectrum in the range of wavelengths 1mm-1 micron, with a range of frequencies  from 300 GHz (Gigahertz) to 300 THz (Terahertz).קרא עוד >

A malignant progressive disease of blood cells. There are many different types of leukemia. קרא עוד >

Such a field is created when an electric current flows.  The stronger the current, the stronger the magnetic field formed around it.  The magnetic field is measured in units of amperes per meter (A/m) or in milligaus (mG), or micro Tesla( µT) .קרא עוד >

A tumor of the membrane that encloses the brain and spinal cord.  This is the principal and most frequent type of tumor in the nervous system.  Most of these tumors are benign.קרא עוד >

Microwaves are radio waves with lengths ranging between 1mm and 1m.The frequencies range between 300 GHz and 300 MHz respectively.Microwave radiation is non-ionizing and has numerous applications in technology.The more common uses are the mobile phone network and the mobile phones, the radars and microwave ovens.קרא עוד >

A technique to produce detailed images of the body tissues using strong external magnetic fields and radiofrequencyקרא עוד >

A combination of several alternating currents (*) operating in parallel at different time periods (phases) depending on the definite time offsets of the electric power source (AC power). Multi-phase systems are useful in industry and for high efficient long distance transportation of electricity via high-voltage lines. Multi-phase system can be of 2,3 or more phases.

(*) See definition - AC

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An alteration in the genetic material of a living organism. Mutations may give rise to cancer in a multi-stage process.קרא עוד >

A group of chemical elements that occur as gases under standard conditions.The six noble gases that occur naturally are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and the radioactive element radon (Rn). These six elements are found in the last column of the Periodic Table. Noble gases are very stable and therefore they have very low chemical reactivity. קרא עוד >

The lower range of frequencies in the electromagnetic spectrum, whose upper limit is ultraviolet light (not included).This radiation is unable to effect changes in the structure of atoms or molecules through ionization.קרא עוד >

Effects of non-ionizing radiation on the body or its components that are not directly related to a rise in temperature of the tissue (i.e. the heating effect).קרא עוד >

Defined and controlled exposure of an adult to electromagnetic radiation in the occupational context.Such persons are monitored and trained to be aware of the possible hazards involved in their work and are provided tools to take precautionary measures.קרא עוד >

A moderating derivative of the exposure threshold that applies to the general public.This leniency is allowed because it refers to defined and controlled exposure of adults to electromagnetic radiation in the context of the workplace.קרא עוד >

A measure for estimating risk in case-control studies.

In Israel, a permit issued by the Ministry of Environmental Protection is required in order to operate a source of radiation.This permit must be in accordance with the requirements detailed by law.Amongst these: site measurement of levels of exposure to the source of radiation.The permit is issued for a limited period, in accordance with the regulations.קרא עוד >

Living creatureקרא עוד >

Component of matter.It may be a formless basic element, or composed of clusters of formless basic elements. For example, the electron is a formless basic particle.קרא עוד >

The number of people under follow up multiplied by the number of years each individual contributed to follow up.

This is the way to take into account the fact that different individuals contribute different time periods to follow up.קרא עוד >

Addition of a specific chemical group, Phosphoryl – PO32-, to a molecule. Phosphorylation serves to transfer energy and to control processes in cells of living organisms (e.g. for activating or delaying a process).קרא עוד >

A process whereby matter emits light after absorbing photons of electromagnetic radiationקרא עוד >

A basic particle representing a unit of energy of electromagnetic power. The photon has the characteristics of a wave and a particleקרא עוד >