18k gold Nine Planets ring with Meteorite and gemstones
This ring features a complete band of Gibeon Meteorite framed and mounted in an 18k gold band. The meteorite has been etched with nitric acid to reveal the characteristic patterns, or Widmanstatten figures, of iron meteorites, and set with 9 gemstones representing the planets of our Solar System. Mercury is represented by a rust colored Sapphire, Venus a golden Sapphire, Earth an irradiated blue Diamond, Mars a Ruby, Jupiter an Opal, Saturn a Cats Eye Chrysoberyl with an inlaid 24k gold ring, Uranus a green Sapphire, Neptune a blue Sapphire and Pluto a black Diamond. What really makes this ring special is that the band of meteorite spins independent of the gold ring, so when it is on, the planets rotate around the wearer’s finger. This ring weighs 26 grams, is 10 mm wide and is a size 11.5. It cannot be sized, but can be custom made in any size. There is also a narrower, 8.5 mm wide version available. The price of the ring is $4200.00 as shown, while the narrower version is $3600.00.
(Source: dduane)
How Much Does Fire Weigh?
Question: Since fire is a plasma, and plasma is a state of matter, and matter is defined as anything that has mass, would that then mean that fire has mass and weight to it? If so, is there a way to measure its weight? How much space would, say, a pound of fire take up?
Answer: It weighs more than nothing, but if you’re at the bottom of a pillar of fire, being crushed should be your second concern
Fires, putting aside details about plasma and chemicals or whatever, is just hot air. For a given pressure the ideal gas law says that the density of a gas is inversely proportional to temperature, in Kelvin. You can use this fact, the temperature and density of air (300°K 1.3 kg/m3), and the temperature of your average run-of-the-mill open flame (about 1300°K) to find the density of fire. For most “everyday” fires, the density of the gas in the flame will be about 1/4 the density of air. So, since air (at sea level) weighs about 1.3 kg per cubic meter (1.3 grams per liter), fire weighs about 0.3 kg per cubic meter.
One pound of ordinary fire, here on Earth near sea level, would take up a cube about 1.2 meters to a side. The reason that fires always flow upward is that its density is lower than air. So, fire rises in air for the same reason that bubbles rise in water: it’s buoyant. Enterprising individuals sometimes even take advantage of that fact.
If you were on a planet with no air at all, fire would fall to the ground instead of rise because, like all matter, it’s pulled by gravity. Also, it would be hard to keep the fire going (what with there being no air).
A Trip to the Moon (Le Voyage dans la Lune, Georges Méliès, 1902)
(Source: rainydaywomen12and35)
New IBEX data show heliosphere’s long-theorized bow shock does not exist
New results from NASA’s Interstellar Boundary Explorer (IBEX) reveal that the bow shock, widely accepted by researchers to precede the heliosphere as it plows through tenuous gas and dust in interstellar space (similar to the sonic boom made by a jet breaking the sound barrier), does not exist.
The latest refinements in relative speed and local interstellar magnetic field strength prevent the heliosphere, the magnetic “bubble” that cocoons Earth and the other planets, from developing a bow shock. The bow shock would consist of ionized gas or plasma that abruptly and discontinuously changes in density in the region of space that lies straight ahead of the heliosphere.
For about a quarter-century, researchers believed that the heliosphere moved through the interstellar medium at a speed fast enough to form a bow shock. IBEX data have shown that the heliosphere actually moves through the local interstellar cloud at about 84,000 km/h, roughly 11,000 km/h slower than previously thought — slow enough to create more of a bow “wave” than a shock.
While bow shocks certainly exist ahead of many other stars, we’re finding that our Sun’s interaction doesn’t reach the critical threshold to form a shock, so a wave is a more accurate depiction of what’s happening ahead of our heliosphere — much like the wave made by the bow of a boat as it glides through the water.
Above: The heliosphere is the region of space dominated by the Sun that cocoons Earth and the other planets. Inflated by the million-mile-per-hour solar wind, the bubble-shaped heliosphere pushes its way through the galaxy.
