imported from
A unit which is a standard measure of the distance between two points.
A unit which is a standard measure of the dimension in which events occur in sequence.
A unit which is a standard measure of the average kinetic energy of the particles in a sample of matter.
A length unit which is equal to the length of the path traveled by light in vacuum during a time interval of 1/299 792 458 of a second.
A time unit which is equal to the duration of 9 192 631 770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium 133 atom.
A thermodynamic temperature unit which is equal to the fraction 1/273.16 of the thermodynamic temperature of the triple point of water.
A length unit which is equal to one hundredth of a meter or 10^[-2] m.
A length unit which is equal to one thousandth of a meter or 10^[-3] m.
A length unit which is equal to one millionth of a meter or 10^[-6] m.
A length unit which is equal to one thousandth of one millionth of a meter or 10^[-9] m.
A length unit which is equal to 10 [-10] m.
A length unit which is equal to 10^[-12] m.
A temperature unit which is equal to one kelvin degree. However, they have their zeros at different points. The centigrade scale has its zero at 273.15 K.
A time unit which is equal to one thousandth of a second or 10^[-3] s.
A time unit which is equal to one millionth of a second or 10^[-6] s.
A time unit which is equal to 10^[-12] s.
A time unit which is equal to 60 seconds.
A time unit which is equal to 3600 seconds or 60 minutes.
A time unit which is approximately equal to the length of time of one of cycle of the moon's phases which in science is taken to be equal to 30 days.
A time unit which is equal to 12 months which in science is taken to be equal to 365.25 days.
A unit which represents a standard measurement of how much of a given substance there is mixed with another substance.
A unit which is a standard measure of the number of rotations in a given time.
A concentration unit which is a standard measure of the number of moles of a given substance per liter of solution.
A unit of concentration which expresses a concentration of 1 mole of solute per liter of solution (mol/L).
A unit of molarity which is equal to one thousandth of a molar or 10^[-3] M.
A unit of molarity which is equal to one millionth of a molar or 10^[-6] M.
A unit of molarity which is equal to one thousandth of one millionth of a molar or 10^[-9] M.
A unit of molarity which is equal to 10^[-12] M.
A unit of molarity which is equal to 10^[-15] M.
A rotational frequency unit which is equal to the number complete turn in a period of time that equals to 1 second.
A unit which is a standard measure of the number of repetitive actions in a particular time.
A frequency unit which is equal to 1 complete cycle of a recurring phenomenon in 1 second.
A time unit which is equal to one thousandth of one millionth of a second or 10^[-9] s.
A time unit which is equal to 100 years.
A time unit which represents the period over which the activity or concentration of a specified chemical or element falls to half its original activity or concentration.
Typically applied to the half life of radioactive atoms but also applicable to any other situation where the population is of molecules of diminishing concentration or activity.
A dimensionless concentration unit which denotes the mass of a substance in a mixture as a percentage of the mass of the entire mixture.
A concentration unit which is a standard measure of the mass of a substance in a given volume (density).
For units and further information look under the mass density unit. For a sample of a specific pure elemental substance, the concentration is directly proportional to the density. However, concentration is not proportional to density in general.
A unit which is a standard measure of physical quantity consisting of only a numerical number without any units.
A dimensionless ratio unit which denotes numbers as fractions of 100.
A dimensionless unit which denotes an amount or magnitude of one quantity relative to another.
A temperature unit which is equal to 5/9ths of a kelvin. Negative 40 degrees Fahrenheit is equal to negative 40 degrees Celsius.
In this scale, the freezing point of water is 32 degrees Fahrenheit and the boiling point is 212 degrees, placing the boiling and freezing points of water 180 degrees apart. -40 degrees Fahrenheit is equal to -40 degrees Celsius.
A dimensionless concentration notation which denotes the acidity of a solution in terms of activity of hydrogen ions (H+).
A concentration unit which denotes the average cell number in a given volume.
A unit of cell concentration which is equal to one cell in a volume of 1 milliliter.
A concentration unit which is a standard measure of the amount of the action of a catalyst in a given volume.
A catalytic (activity) concentration unit which is equal to 1 katal activity of a catalyst in a given volume of one cubic meter.
A catalytic (activity) concentration unit which is equal to 1 katal activity of a catalyst in a given volume of one thousandth of a cubic meter.
A unit of cell concentration which is equal to one cell in a volume of 1 microliter.
A unit of cell concentration which is equal to 1 cell in a well or discrete container of arbitrary volume.