Viewing profile — sornen
sornen
HN member- Joined
- Sat, Jun 28, 2014, 6:40 AM UTC
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- 8 items
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About sornen
Recent public activity
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Comment #40871478
Chalmers in point 2 is not saying to imagine such a world, but that such a world is logically possible. Chalmers gives as an example of a logical impossibility a male vixen since i…
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Comment #40436353
To illustrate what can be done with the BOSL2 library for openscad this can add 3 "diamonds" to the RIGHT, FWD, and TOP direction of a square, with the RIGHT and FWD diamond's corn…
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Comment #40435143
Another option is the BOSL2 library for openscad which has align, attach and anchor operations and many other useful operations and parts.
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Comment #39749805
In the case of sunlight exposure to UVB an equilibrium is reached where the amount vitamin D produced in the skin equals the amount destroyed by UVB. This does not happen if you po…
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Comment #36183211
This was about 10 years ago but here in New Zealand I found someone who could repair and replace the rubber so my 30 year old infinities are as good as new.
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Comment #27684147
The tiling window manager in popOS is well thought out, has intuitive key bindings. As a former i3wm user I find it a significantly better.
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Comment #20762196
The light that is required to increase vitamin D production is UVB. The Penn State researchers used a pulsed UVB source for their research. Lower frequency light will not activate …
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Comment #18893127
The problem here is that UVB levels, required for vitamin D synthesis, decrease dramatically before 9am and after 6pm, whereas UVA does not. The best option for vitamin D synthesis…