rule of thumb
principle with broad application that is not intended to be strictly accurate or reliable for every situation
Pareto principle
statistical principle about ratio of effects to causes
empirical statistical law
statistical tendency that occurs in a broad range of datasets
I before E except after C
mnemonic rule of thumb for English spelling
octet rule
chemical rule of thumb
Rock's law
Observation on semiconductor fab prices
rule of thirds
Rule of thumb for scuba gas management
Rule of three
rule in statistics
Benford's law
observation about the frequency distribution of leading digits in many real-life sets of numerical data
Andy and Bill's law
statement that new software consumes any increase in computing power that new hardware can provide
rule of three
a rule of thumb in C++ (prior to C++11) stating that if a class defines one (or more) of destructor, copy constructor, or copy assignment operator, then it should probably explicitly define all three
Bent's rule
rule in geometry of individual molecules
two-second rule
gap of two seconds between the rear bumper of the vehicle in front and the front bumper of the vehicle following in the same lane, regardless of the vehicles' speed(s)
eighteen antagonisms and nineteen mutual inhibitions
rules of thumb in TCM drug combination
Nelson rules
method in process control of determining if some measured variable is out of control
Metcalfe's law
empirical rule that the value of a telecommunications network is proportional to the square of its number of users
Fleming's left-hand rule for motors
Used to determine direction of the coil
lead room
compositional concept in visual arts about the space in front of the subject
Moscow Rules
Cold War era safety precautions, used by spies
Rule of thirds
composition technique
Clark's rule
medical term and rule of thumb
Rose's law
observation that the number of qubits on chips doubles about every 18 months
Moore's law
observation on the growth of integrated circuit capacity
Swanson's law
photovoltaic pricing observation
rule of the moving square
chess endgame rule of thumb about whether a king can prevent a pair of enemy pawns from promoting
"Yes, And" rule
Rule-of-thumb in improvisational comedy
rule of tincture
rule of color composition