By marlow | Published: May 11, 2012
There are many ways to look at 10-15. This power of ten is: the scale of the atomic nucleus the length in meters of a proton and neutron the weight in kilograms of an E. coli bacterium the pressure in pascals of outer space between stars in the Milky Way the size or volume in [...]

Posted in Uncategorized | Also tagged 10-to-minus15, cubic meters, E. coli, femtosecond, kilograms, meters, Milky Way, neutron, nucleus, pascals, pressure, proton, quadrillionth, sand, scale, size, weight
By marlow | Published: December 12, 2011
Universe Today offers a few fascinating ways to consider the size of the moon: “The volume of the Moon is 2.195 x 1010 km3 [almost 22 billion km3]. That sounds like a huge number, but it’s actually only 2% the volume of the Earth. In other words, you could fit 50 moons inside the volume [...]

Posted in Uncategorized | Also tagged 10-to-plus10, 10-to-plus22, 10-to-puls07, Asia, Earth, kilometers, mass, moon, square kilometers, surface area, Universe Today
By marlow | Published: October 28, 2011
We can consider the power 10-12 from multiple perspectives. A few of many examples are listed below: Mass of an average human cell (10-12 Kg) Lowest pressure obtained in laboratory conditions (10-12 pascals) Surface area of an E. coli bacterium (6×10-12 m2) Kinetic energy of a D-T fusion neutron (2.26×10-12 joules) Wavelength of gamma rays [...]

Posted in Uncategorized | Also tagged 10-t0-minus12, cell, cubic meters, E. coli, frequency, gamma rays, half-life, joules, kinetic energy, mass, meters, microwave charge, neutron, nuclear magnetic ordering, pascals, pressure, quark, sand, surface area, temperature, watt, x-rays
By Llisa | Published: October 3, 2011
The International System of Units (SI) is founded on seven SI base units for seven base quantities assumed to be mutually independent, as given in Table 1. Here is the SI list from the NIST reference on Constants, Units and Uncertainty. Table 1. SI base units SI base unit Base quantity Name Symbol length meter [...]

Posted in Uncategorized | Also tagged 7, acceleration, amount of substance, amount-of-substance concentration, ampere, area, base, candela, Countdown to 10/10/11, derived quantity, electric current, kelvin, kilogram, length, luminance, luminous intensity, magnetic field strength, mass, mass density, mass fraction, meter, mole, second, SI, speed, thermodynamic temperature, time, units, velocity, wave number