How to pronounce “reflectivity” in English

Traditional masks that allow light to pass through don't work because, well, they absorb all the light.Each mirror had a reflectivity of around 70%, which is close to the max, but after nine bounces, you are only left with 4% of the light,which means that out of every 100 photons, only four make it to the wafer.

So first of all, what is this idea?Solar geoengineering is the idea that humans could deliberately alter the reflectivity of the planet by some set of technicalmeans-- simple cartoon here-- in a way to reduce the climate change that comes from the buildup of greenhouse gases like carbon dioxide.

But we don't. Or we assume, for now, we don't.Well, the brightness will depend upon the overall reflectivity or albedo of the face.Is it white or black or gray or other color?

Fortunately, further researchers also looked at two other pairs, silicon and molybdenum, which had a theoretical maximum reflectivity of 70%for wavelengths around 13 nanometers, and molybdenum and beryllium with a theoretical maximum reflectivity of 80%for wavelengths around 11 nanometers.

So the choice seemed obvious, right?I mean, pick the shorter wavelength and the higher reflectivity.But it turns out that beryllium is extremely toxic and it's also difficult to handle.

- Underwood and Barbee had already made mirrors that could reflect light of around four nanometers.And since that wavelength is so small, it seems like the obvious choice, but the maximum reflectivity for those mirrors was only around 20%.So after hitting six mirrors and the reticle, you are just left with 0.00128% of the light,

which is way too low.Fortunately, further researchers also looked at two other pairs, silicon and molybdenum, which had a theoretical maximum reflectivity of 70%for wavelengths around 13 nanometers, and molybdenum and beryllium with a theoretical maximum reflectivity of 80%

the cooling and warming model a little bit. Because -- to me, who is sort of untrained in this -- ice and carbon seem like two different things.And if we factor out people, you know, you talked about reflectivity, and that completely makes sense. I can see that.But, if I apply that to the past Ice Age, it would seem like, "Oh, we'd never warm up again. Because as the ice got thicker and thicker,