This release covers a progress payment for the work, materials or equipment furnished by the. undersigned to the Property or to the Undersignedâs Customer which are the subject of the Invoice or. Payment Application, but only to the extent of the Payment Amount or such portion of the Payment.
In contrast, visible light and longer-wavelength electromagnetic radiation, such as infrared, microwaves, and radio waves, consists of photons with too little energy to cause damaging molecular excitation, and thus this radiation is far less hazardous per unit of energy.
Generally, ionizing radiation are high energy waves and are all harmful, even in low amounts, such as gamma rays, x-rays, and ultraviolet waves. These types of radiation cause ionization of atoms and molecules, leading to destruction of the molecules in cells and DNA. If DNA is destroyed in a cell, that cell can be cancerous. Lower energy waves, such as visible light, infrared radiation, and radio waves are not harmful (again, except in extreme cases). Exposure to high levels of visible or infrared radiation (for example from a powerful laser) can cause blindness and can burn the skin. Microwaves are a low energy wave that are in fact fairly harmful. Exposure to intense microwaves can cause intense heating of the tissue, potentially causing severe burning.