Continued from part 1
The second form of quartz is known as Cryptocrystalline (or microcrystalline) Quartz. These are forms of quartz where the crystals are visible using a microscope or high powered magnifier. Usually the minerals formed by quartz being laid on from water sediment or other silica sources. The most common form of cryptocrystalline quartz […]
To remind you that it was 400 years ago this day (8/25) that Galileo first presented his telescope to the merchants of Venice.
This was just his public presentation, mind you. It was not when he actually observed the heavens or wrote his famous publications.
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Quartz! Its the second most abundant mineral in the Earth’s crust (#1 is Fedspar) making up some 12% of our little planets shell. Quartz is a combination of Oxygen and Silica (SiO2). Quartz comes in two versions: crystalline and cryptocrystalline. The former category is what most people are familiar with and most of the quartz […]
One item Spectrum has had in its inventory since it opened its doors is the 40 Rocket Balloons and Pump kit. We didn’t think too much of it at the time; it was a neat idea and a decent price.
But after a while we noticed that we seemed to keep running out of this item. […]
On August 11th, Saturn’s rings disappeared from Earth’s view. This is because from our perspective the rings appear to ‘wobble’ over the period of years; showing us their tops and bottoms from differing angles.
But part of that ‘wobble’ is that every 15 years or so the rings are edge-on the earth and disappear from […]
Very late tonight (8/11/09), or rather very early tomorrow morning the Perseid meteor shower will peak. Despite having a bright rising Moon washing out much of the sky. The meteors should appear in the Northeast Night Sky starting around 10PM and should give plenty of streaking stellar action until dawn.
At its Peak, you should get […]
