beakergordon

3 yıl öncediscuss

On this note, does anyone know the tentative plan for the upcoming Artemis missions? Looks like they're slated for 30 days, but at least a few of those will probably be spent in transfer orbits. It makes me wonder if that timeline is configured to line up to an exact day-only time window on the surface.

beakergordon

3 yıl öncediscuss

If the goal was isolation from natural disasters and the like, then why not just build it in a facility like Yucca Mountain?

beakergordon

3 yıl öncediscuss

I think the implied comparison was: do we launch panels to the moon or build them in-situ? The increased solar exposure should boost both of these cases by the same percentage, but if the Earth-manufactured panel is (e.g.) 3x as efficient, it might still make more sense to ship them.

beakergordon

3 yıl öncediscuss

The core constraint is the ability of any particular monitor to product light at these wavelengths. In simple terms, LCD panels often shine a white backlight through a panel with separate red, green, and blue filters for every pixel. A fully-white image, then, should have the broadest spectrum possible for a specific screen. Apply a pure red image, e.g. 0xFF0000, will selectively filter the spectrum to mostly eliminate the green and blue wavelengths, but depending on the filtering material may also eliminate longer wavelengths too.

Edited to add: This graphic [1] illustrates the spectrum produced by common light sources. Old LCD panels used fluorescent backlights like the bottom example. More recent LCD panels often use an array of LED backlights. The bottom line is that, if you're trying to maximize red light exposure, you're much better off with: sunlight >> incandescent bulb light > a very "warm" LED light.

[1] https://www.waveformlighting.com/img/full-spectrum-graphic.p...

comments