A launch laser or mass driver powerful enough to boost huge masses into orbit can smash a combat starship like a sledge-hammer hitting a cockaroach. If there is a planetary disaster, spaceports will suddenly be thrust into the role of operational center. After all, it will be the source ...
The sphere that is circled represents one atomic unit (i.e., 1/12 th ) of that atom. This unit is the basis for determining the relative atomic weight for all other elements. A hydrogen atom is assigned an atomic weight of 1 (rounded from 1.008) because the mass of a hydrogen atom ...
Galactic a galaxy, most or all of its stars, up to all mass associated with it. Universal the entire universe, all or most galaxies within it, or all major galaxy filaments or equivalent highest-level structures. Multiversal multiple universes, or whatever that exists outside of the setting'...
The assembled FG phase showed essentially the same permeation selectivity as Mac98A FG phases: both FG phases excluded the inert probe mCherry protein (~30 kDa), but at the same time allowed strong partition (partition coefficients ~2000) of the nuclear transport receptor NTF2, which is ...
This concept involves a nuclear means of producing and focusing a high-density, extremely high-velocity gas (Nuclear Howitzer) or, by means of a second interaction, a mass of high velocity, solid pellets (CASABA) into an angle of about 2°-4°. The desired effect of this concept is a ...
One FH has a liftoff mass of 1,462,836 kilograms. It is assumed that one FH can put 53,000 kilograms into LEO, 17,216 kilograms into either a lunar or Earth-Moon L1 (EML1) orbit, and 5,739 kilograms onto the lunar surface. Mass doesn’t necessarily have to be lifted directly ...
Alpha : (kg/kW) power plant mass in kilograms divided by kilowatts of power. So if a solar power array had an alpha of 90, and you needed 150 kilowatts of output, the array would mass 90 * 150 = 13,500 kg or 13.5 metric tons Specific Power : (W/kg) watts of power divided by...
After a certain mission duration, it will be cheaper (in terms of mass) to use a CELSS instead of transporting consumables. With a primitive CELSS this happens at about 145 days, increasing the efficiency will bring the break-even duration point lower. The mass of the CELSS is constant rega...
The DREAM database is certainly the most comprehensive at present available for spectroscopic parameters related to the lowest ionization stages of lanthanide elements and it is expected that it will be updated in the light of the new atomic structure calculations we intend to perform in the future...
Impact rounds are made out of materials of much lower density than the lead normally used in bullets, are larger, and are fired at lower velocities. Rounds are designed with low mass, moderate velocity, and large surface area to prevent the rounds from penetrating the skin significantly or ...