Manic of a panic is geopolitical

[kriesel]

Maybe some mandatory rotation off the front lines is in order for medical staff. https://nypost.com/2020/04/27/manhat...by-coronavirus

[kriesel]

Originally Posted by kladner

I guess a few younger people (along with other age groups) having sudden fatal heart attacks and massive debilitating strokes is

probably to some extent only a matter of timing, and to some extent out of our control. There's no reasonable prospect of driving the virus extinct. Confined to quarters and fearful is no way to live an entire adult life.

[kladner]

That is a feast of information to work through. Thanks for the links and explanations.

[Uncwilly]

Originally Posted by xilman

Is it? I would have thought that lenses would be used in rather a lot of the UV. We used to use quartz optics at the relatively long wavelengths but I have no experience down towards 100nm ("vacuum UV"), which includes the astronomically important Lyman lines.

It has been years since I ran the test for NO₃^- but we used (if memory serves) 220nm and 245nm. The lenses were quartz florite, (again if memory serves.)

[kriesel]

Found in the comments of https://pjmedia.com/instapundit/368862:
The web page with animation video of the UVA in trachea https://aytubio.com/healight/
The cure that time forgot https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6122858/

A Manhattan project https://www.wsj.com/articles/the-sec...an-11587998993
Described at https://www.foxnews.com/science/coro...project-report which is not behind a paywall.

[ATH]

https://www.beckershospitalreview.co...sis-finds.html

COVID-19 deaths in US likely much higher than reported in early weeks of pandemic, new analysis finds

https://www.ft.com/content/6bd88b7d-...9-0d5c6fac846c

Global coronavirus death toll could be 60% higher than reported

[Dr Sardonicus]

Originally Posted by kladner

Fascinating! Thanks for that outline. I resonate with depth of field as a photographer, even though visible light is probably focused differently.

There are a couple of considerations.

One is "dispersion," or variation of index of refraction with wavelength. Dispersion is what turns white light into a rainbow of colors as it passes through a prism.

Another is, ordinary glass absorbs UV. If you want glass that allows it through, it's got to be special glass. (Of course, there are any number of specialized cameral lenses.)

"Windows" that allow UV to pass through are sometimes made of quartz.

[Dr Sardonicus]

Organizer of North Carolina group protesting quarantine rules sidelined with coronavirus

An organizer of a North Carolina group calling on the state to ease its coronavirus restrictions was unable to attend two rallies because she tested positive for the disease, a report said.

Audrey Whitlock, who administers the Facebook page of ReOpen NC, was under quarantine for two weeks ending Sunday after testing positive for coronavirus, according to news station WFAE.

[kriesel]

Originally Posted by Dr Sardonicus

Another is, ordinary glass absorbs UV. If you want glass that allows it through, it's got to be special glass. (Of course, there are any number of specialized camera lenses.)

"Windows" that allow UV to pass through are sometimes made of quartz.

Not only the bulk lens material, but the coatings may be an issue. Antireflection coatings are commonly designed to pass 400-700nm or 350 - 750 or so. Some consumer lenses have some UVA transmission, and UV blocking filters are offered as accessories.
In a color camera, the filters overlaid on the sensing elements may leak UV into the longer wavelength elements as well as the shortest. A well filtered visible light color camera will detect UVA as dark, or as purple and display it as such on a monitor. Others will give a variety of faux color renderings.

[kriesel]

The wife of the man killed by fish tank cleaner containing chloroquine phosphate is now presumably the subject of a homicide investigation. https://freebeacon.com/coronavirus/p...ine-phosphate/

[retina]

I just took a peek at the current figures.

The number of identified cases now exceeds a mega-pi.