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Comment: Plate tectonics unclear in Oklahoma (Score 1) 169

by peter303 (#49538767) Attached to: USGS: Oil and Gas Operations Could Trigger Large Earthquakes
It is not near any current modern plate boundaries.
But there an ancient boundary where the huge 1812 quakes occurred in Missouri.

Plate boundaries are a tautology (circular definition): they are defined by linear zones of seismic it's; in turn they define the most likely future quake locations.

Comment: Mars pictures often three versions (Score 1) 28

by peter303 (#49527701) Attached to: How False Color Astronomy Works
1) Raw B&W intensities through a non-filer or color filter.
2) "True color" processing to match the colors on a reference image painted on a probe wall. Took a while to confirm the Martian sky and sunsets are different colors than Earth counterparts.
3) "Enhanced color" contrast jacked up to reveal more details like cracks and nodules.

Comment: need super precision numbers? (Score 1) 157

by peter303 (#49511039) Attached to: Mandelbrot Zooms Now Surpass the Scale of the Observable Universe
Mandlebrot magnificiation blurs out when you use single-precision floating point. Double precession gets you about another 25 powers of two. I'd go for 128-bit precision to really explore Mandelbrot. Its rarely implemented in hardware or software.

Comment: liability for authors of misused apps? (Score 2) 234

by peter303 (#49486203) Attached to: Can Online Reporting System Help Prevent Sexual Assaults On Campus?
If someone loses their employment becasue this app is misused to punish someone, is the author liable? Common carriers are generally immune to the content passed through them. ISPs are partially immune. But DRM, drug trades, underage porn without due dilligence can get them in trouble. But what about software authors?

Comment: a ghostly gas inside us all (Score 2) 117

by peter303 (#49478473) Attached to: Hubble and the VLT Uncover Evidence For Self-Interacting Dark Matter
Electromagnetic force created chemical bonds and the illusion of substance in normal matter. Even though normal matter is 99.9999% "empty", EM chemical bonds keeps solids and liquids from interpenetrating each other. Since dark matter doesnt seem to have EM chemical bonds, it just difuses through the general emptiness of normal matter. It just may make us feel a little heavier than were really are from just normal matter.

Any given program will expand to fill available memory.