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...verns its emission of thermal radiation at a given temperature, and is the ratio by which the material emits less than a black body. The number is between 0

The ratio of the amount of [[Electromagnetic Radiation|electromagnetic radiation]] re

...required to replace all uses of copper. On Earth copper is extracted at a ratio of about 0,6% compared to Iron (1:150). And 1:3 compared to aluminum. ...million people the amount required might be about ten tonnes (hypothetical ratio of 100:1).{{Autostub}}

*The pyroxene/plagioclase ratio in mature soil increases with decreasing grain size. (6, pg 249) ...et’s keep it simple. Empirical formulas show the simplest positive integer ratio of atoms in the compound. This means that Fe₂Si₂O<sub

...and for larger than average people. The respiration quotient is the molar ratio of CO₂ generated to O₂ consumed.<ref><u>Designing For

...is found substituting for iron in various oxides, in approximately a 1:70 ratio <ref>Washington University in Saint Louis, Department of Earth and Planetar

...ith about 60% oxygen. In the event of an sudden [[depressurization]] this ratio means you do not have a hard transition to switch to your backup breathing

...is well known for corrosion resistance and for its high strength-to-weight ratio. Approximately 95% of titanium is consumed in the form of [[titanium dioxi

...ion people the amount required might be about one metric ton (hypothetical ratio of 100:1). So Lithium would likely be sourced from Earth for this use.

...bottom, Mission Control nixed the idea as having too high a risk-to-reward ratio (it was the first expedition using the Lunar Rover).<BR/>

...y two times that of the Saturn V, and still maintain the desired mass cost ratio.

...the two massive bodies in the circular case, implying that it has the same ratio of gravitational force to radial distance as they do. This fact is independ ...ultant]] acceleration is to the distance from the barycentre in the same [[ratio]] as for the two massive bodies. The barycentre being both the [[centre of

...area at the top and bottom end = the ribbon is tapered. The required taper ratio increases rapidly with slightly weaker material, quickly making the ribbon

...m/s (reference) will require 1 kg of propellant per kg launched, or a mass ratio (Mo/Mf) of two. ...0 MJ/kg. the chemical reaction of the aluminum oxygen rocket Al2+O3 has a ratio of 52(Al) to 48(O) so 1 kg of propellant includes 520 grams of aluminum. T

...rth's railroads, but the trend is that there is an increasing lift to drag ratio at higher speeds, so it should work better than on Earthly railroads.

The start of this high ratio of machine to human labor is the remote controlled equipment that builds th

...because an all-liquid chemical propellant gives a better thrust to weight ratio than a solar thermal rocket and it uses a less complex system overall.

...loyed, since they were all available since 1985. The low thrust to weight ratio for the orbital maintenance thrusters on the orbiting fuel depot would not

...has since been modified by volcanism). Further out, at a general spacing ratio, one comes to each successive ring. Beyond the outer rim, we find the usua

...verage specific gravity of JSC-1 particles is 2.9 g/cm3. This value is the ratio of particle mass to the mass of an equal volume of water measured at 4°C.