Chem Engg
Two or more controllers working together to control a process.
Cascade Control
A heat treatment process used to relieve internal stresses in ferrous and nonferrous metals.
Annealing
One of a number of statistical techniques used to resolve and observe the variance between sets of statistical data into components.
ANOVA
This philosopher is known for his work "The Republic," which outlines his vision of an ideal state.
Plato
A straight line that is closely approached by a curve so that the perpendicular distance between them decreases to zero at an infinite distance from the origin.
Asymptote
A type of bubble column reactor into which air is sparged at the bottom as bubbles to promote oxygen transfer and cause circulation of the liquid.
Air Lift Reactor
A valve used to control the flow of process material through a pipe by controlling the flow area through the valve by way of an applied air pressure signal.
pneumatic control valve
The SI unit of radioactivity corresponding to one disintegration per second
becquerel
This Renaissance sculptor created the marble statue of David, which stands in Florence, Italy.
Who is Michelangelo?
An instrument used to measure the speed of a gas such as air. It comprises cups or vanes that rotate freely and are linked to a tachometer.
anemometer
A number used as a measure of diesel fuels that represents the percentage of hexadecane (i.e. cetane) in a mixture with 1-methylnaphthalene that has the same ignition characteristics as a diesel fuel being tested in a standard diesel engine
Cetane No.
A point on a triangular diagram used to represent ternary liquid systems. where two conjugate phases are mutually soluble and where there is no tie line.
Plait Point
A process used to join metal in which a filler metal is heated to a melting temperature and is then distributed between close-fitting parts to be joined together by capillary action
Brazing
This French philosopher is known for his statement "Cogito, ergo sum" ("I think, therefore I am") and his contributions to rationalism.
Who is René Descartes?
A tube inserted into a vessel to obtain a measure of its pressure or to allow the discharge of its contents.
Adjugate
A process used to make solid pellets from a molten material or solution. The liquid is poured under gravity into an upward flow of air. It is used in the manufacture of fertilizers such as ammonium nitrate.
Prilling
An empirical equation used to describe the surface tension between two liquids in equilibrium being equal to the difference between the surface tension of the two liquids when exposed to air.
Antonov's Rule
A Latvian-born German physical chemist noted for his work on chemical reactions and electrolytes. He was awarded the Nobel Prize for Chemistry in 1909 for his work on catalysis, chemical equilibria, and reaction velocities.
Ostwald, Friedrich Wilhelm
This Irish playwright wrote "Waiting for Godot," a seminal work of the Theatre of the Absurd.
Samuel Beckett
A British Imperial volumetric unit of measure equal to two pints and is a quarter of the volume of a gallon
Quart
A type of frequency response diagram used for analysing the behaviour of a controlled system to a disturbance signal particularly in terms of assessing the stability with feedback.
Nyquist Plot
The ratio of successive peaks or troughs of the signal in an underdamped controlled system above or below the final steady-state value equal to 4:1
quarter damping
A process used for the production of magnesium developed by a Canadian scientist. It involves the high temperature reaction of silicon and magnesia to form silica and magnesium.
Pidgeon process
This Colombian author won the Nobel Prize in Literature in 1982 and is famous for his novel "One Hundred Years of Solitude".
Who is Gabriel García Márquez?
Used to calculate the thermal radiation heat transfer exchange between surfaces, it is the sum of the emissive power and the portion of the radiation that is reflected by a surface.
radiosity