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A Sami measurement of distance; the distance a reindeer can travel before needing to stop to urinate. Today used to describe something that is at a very obscure distance away. Poronkusemaa kuukaudessa – (poronkusemas per month) similar to furlongs per fortnight, about 2.9 mm/s; tusina – 12 (from Swedish "dussin" = dozen) toltti – 12 (lumber)
Tortuosity calculation from an x-ray tomography reconstruction of a porous sandstone (the pores are shown): [9] the color represents the shortest distance within the pore space from the left limit of the image to any point in the pores. Comparing this distance to the straight-line distance shows that the tortuosity is about 1.5 for this sample.
There is no clear relationship between the size of soil mineral components and their mineralogical nature: sand and silt particles can be calcareous as well as siliceous, [18] while textural clay (0.002 mm (7.9 × 10 −5 in)) can be made of very fine quartz particles as well as of multi-layered secondary minerals. [19]
A suitable distance between rests when walking. Believed to be approx. 9 km before 1541. Kaffekok, a similar term to rast used in the north by the indigenous Sami people. steinkast – stone's throw, perhaps 25 favner, used to this day as a very approximate measure of a short distance.
The siriometer is an obsolete astronomical measure equal to one million astronomical units, i.e., one million times the average distance between the Sun and Earth. [13] This distance is equal to about 15.8 light-years, 149.6 Pm, or 4.8 parsecs, and is about twice the distance from Earth to the star Sirius. [14]
This is a list of units of measurement based on human body parts or the attributes and abilities of humans (anthropometric units). It does not include derived units further unless they are also themselves human-based. These units are thus considered to be human scale and anthropocentric.
The excluded volume of particles (the volume excluded to the centers of other particles due to the presence of one) is a key parameter in such descriptions,; [2] [3] the distance of closest approach is required to calculate the excluded volume. The excluded volume for identical spheres is just four times the volume of one sphere.
Note that since the particles in the ideal gas are non-interacting, the probability of finding a particle at a certain distance from another particle is the same as the probability of finding a particle at the same distance from any other point; we shall use the center of the sphere.