** May be caused by mass effect or venous dilatations.

** Macroevolution: adaptive radiation — convergent evolution — extinction — mass extinction — fossil — taphonomy — geologic time — plate tectonics — continental drift — vicariance — Gondwana — Pangaea — endosymbiosis

** Techniques: electrophoresis — His tag — affinity chromatography — x-ray diffraction — Proteomics — mass spectrometry

** The breech refers to the mass of solid metal behind the bottom of the bore extending to the base of the breech and including the base ring ; it also generally refers to the end of the cannon opposite the muzzle, i. e., the location where the explosion of the gunpowder begins as opposed to the opening through which the pressurized gas escapes.

** Rock mass classifications

** Metric ton, a measurement of mass equal to 1, 000 kg

** Reduce muscle mass

** Forces, weight, and mass

** Black mass

** Radio Maryja-a radio station that is centered around religious observances, such as mass, and prayer, in Polish.

** The final fighting in Croatian and Bosnian wars ends in 1995 with the success of Croatian military offensives against Serb forces and the mass exodus of Serbs from Croatia in 1995 ; Serb losses to Croat and Bosniak forces ; and finally the signing of the Dayton Agreement which internally partitioned Bosnia and Herzegovina into a Republika Srpska and a Bosniak-Croat federation.

** In San Diego, California, 39 Heaven's Gate cultists commit mass suicide at their compound.

** Howard Unruh, a World War II veteran, kills thirteen neighbors in Camden, New Jersey with a souvenir Luger to become America's first single-episode mass murderer.

** Mark Essex, American mass murderer ( d. 1973 )

** The Ford Motor Company introduces the first moving assembly line, reducing chassis assembly time from 12½ hours in October to 2 hours, 40 minutes ( although Ford is not the first to use an assembly line, his successful adoption of one sparks an era of mass production ).

** WWII: Over 500 Japanese prisoners-of-war attempt a mass breakout from the Cowra POW Camp.

** In the last mass lynching in the United States, a mob of white men shoot and kill two African-American couples near Moore's Ford Bridge in Georgia.

** Charles Whitman, American mass murderer ( d. 1966 )

** Bosnian War: Serb troops, following a mass rebellion of Serbs in Bosnia and Herzegovina against the Bosnian declaration of independence from Yugoslavia, besiege the city of Sarajevo.

** Soviet Armed Forces suppresses mass demonstrations in the Georgian Soviet Socialist Republic, reacting to Nikita Khrushchev's de-Stalinization policy.

** Marc Lépine, Canadian mass murderer ( b. 1964 )

** An ice mass breaks the Oder Dam in Breslau.

** The CIA admits that there was no imminent threat from weapons of mass destruction before the 2003 invasion of Iraq.

** 0. 1 m³ -- water of mass 100 kg

** an amount of water of mass 10 kg

** Path loss, the attenuation undergone by an electromagnetic wave in transit from a transmitter to a receiver

** For notch filters, the degree to which unwanted signals at the notch frequency must be rejected determines the accuracy of the components, but not the Q, which is governed by desired steepness of the notch, i. e. the bandwidth around the notch before attenuation becomes small.

** For high-pass and low-pass ( as well as band-pass filters far from the center frequency ), the required rejection may determine the slope of attenuation needed, and thus the " order " of the filter.

** The attenuation coefficient, which is sometimes but not always synonymous with the absorption coefficient

** The absorption cross section and scattering cross-section are closely related to the absorption and attenuation coefficients, respectively.

** Pearson product-moment correlation coefficient

** Spearman's rank correlation coefficient

** Molecular diffusivity ( often called " diffusion coefficient ")

** Torsion coefficient

** Beta coefficient

** Context-adaptive variable-length coding ( CAVLC ), which is a lower-complexity alternative to CABAC for the coding of quantized transform coefficient values.

** The correlation coefficient of a population parameter

** K < sub > f </ sub > is the filtration coefficient – a proportionality constant

** σ is the reflection coefficient

** Spearman's rank correlation coefficient, a non-parametric test statistic

** Molar absorptivity, also called " molar extinction coefficient ", which is the absorption coefficient divided by molarity ( see also Beer – Lambert law ).

** with indices denotes the number of combinations, a binomial coefficient

** the sample correlation coefficient r,