BIOL 2905 Chapter Notes - Chapter 4: Gonorrhea, Coccobacillus, Foodborne Illness
Document Summary
Identify the two primary metric units used to measure the diameters of microbes. One tenth of a centimeter is millimeter(mm) So one-thousandth of a millimeter is a micrometer. One thousand of a micrometer is a nanometer. ** discuss the relationship between wavelength and resolution. Beams of radiation may be referred to as either rays or waves. These various forms of radiation differ in wavelength,- the distance between to corresponding parts of the wave. Ex the human eye discriminates among different wave lengths of visible light and sends patterns of nerve impulses to the brain ex we see violet at 400nm and red at 650. 1) the wavelength of the electromagnetic radiation. 2) numerical aperture (ability of the lens to gather light) Resolution distance = 0. 61/numerical aperture iscuss the relationship between contrast and staining in microscopy. Contrast difference in intensity between two objects or between an object and its background.
