Ventilation
The engineering control that captures and removes air contaminants from the source of emission.
What is local exhaust ventilation?
The amount of energy required to displace an electron.
What is ionization potential?
The founder of industrial hygiene who wrote the book On the Dangerous Trades.
Who is Alice Hamilton?
Light Amplification by Stimulated Emission of Radiation
What is a L.A.S.E.R?
Basic unit of matter in Chemistry; it is composed of a nucleus and electrons.
What is an Atom?
Typically measured in cubic feet per minute and is the product of the area of a duct multiplied by the velocity of air flowing.
What is volumetric flow rate (Q)?
The most common type of absorbent made from coconut shell or petroleum.
What is activated charcoal?
The father of toxicology: the dose makes the poison (paraphrased).
Who is Paracelsus?
The amount of time it takes 50% of the radioactive atoms to decay to a stable state.
What is half-life?
The number of protons and neutrons in the nucleus.
What is Atomic mass?
Includes a Hood, Duct, Air cleaner, Fan and Exhaust
A passive monitoring operation that relies on the movement of contaminant molecules across a concentration gradient.
What is Diffusion Theory sampling or Fick’s first law?
The father of medical microbiology, famous for treating milk and wine to stop bacterial contamination.
Who is Louis Pasteur?
Intensity is inversely proportional to the square of the distance.
What is inverse square law?
An element that has equal number of protons but different number of neutrons.
What is an isotope?
Fluid motion characterized by chaotic changes in pressure and flow velocity. For example, storing items in a hood negatively affects fume hood performance.
What is turbulence?
Glass tubes packed with inert, solid, granular material coded with a chemical agent that changes color when a vapor is pulled through.
What are colorimetric tubes?
First scientist to demonstrate that cancer may be caused by an environmental carcinogen, namely chimney sweeps' carcinoma.
Who is Percivall Pott?
Type of radiation that is best shielded by skin or paper but does the greatest internal damage.
What are alpha particles?
The total pressure of a mixture of gases is equal to the sum of the pressure of each gas.
What are partial pressures?
A device consisting of two concentric tubes: one measures the total or impact pressure existing in the air stream, and the other measures the static pressure.
What is a Pitot tube?
A calibration classification that involves movement of a bubbler piston, and a chamber of a known fixed volume.
What is a primary standard?
The amount of biological damage produced by a specific radiation and a given exposure.
Protium, deuterium, and tritium.
What are the hydrogen isotopes?