Search found 266 matches

by Dan Knapp
Sun Apr 05, 2020 10:52 pm
Forum: Announcements and Site Administration Topics
Topic: Coronavirus pandemic
Replies: 55
Views: 2682

Re: Coronavirus pandemic

The mask was made from material I cut from a tee shirt I picked up at a physics meeting years ago. The remainder of the tee shirt didn’t say who was giving them away.
by Dan Knapp
Sun Apr 05, 2020 7:54 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Fusor V construction - the process long running
Replies: 29
Views: 2152

Re: Fusor V construction - the process long running

If you need a way to make really sharp tungsten tips, I suggest using the electrochemical etching method used to make scanning tunneling microscopy probes. I used this approach when I tried to make a sharp focus cold cathode electron source. I wasn't able to get the electron current I was seeking, b...
by Dan Knapp
Sun Apr 05, 2020 4:49 pm
Forum: Announcements and Site Administration Topics
Topic: Coronavirus pandemic
Replies: 55
Views: 2682

Re: Coronavirus pandemic

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72B2E5E3-2E25-439C-A4EF-80829DA689FD.jpeg (30.47 KiB) Viewed 63 times
If you’ve been wondering what to do with that box of old tee shirts you picked up at meetings and trade shows over the years......
by Dan Knapp
Sat Apr 04, 2020 3:22 am
Forum: Announcements and Site Administration Topics
Topic: Coronavirus pandemic
Replies: 55
Views: 2682

Re: Coronavirus pandemic

Sewage epidemiology has suddenly become a hot topic. This story just came out today in Nature: https://www.nature.com/articles/d41586-020-00973-x?fbclid=IwAR0ZPLGPICcxmi1-TGI8zd4S3ozNyvcmwuOnPcYI75RgcGDEmdFVjBZqwYA They say measuring virus in sewage could be key to early warning of a second wave of ...
by Dan Knapp
Wed Apr 01, 2020 9:08 pm
Forum: Announcements and Site Administration Topics
Topic: Coronavirus pandemic
Replies: 55
Views: 2682

Re: Coronavirus pandemic

We all have it.
by Dan Knapp
Tue Mar 31, 2020 4:52 pm
Forum: Announcements and Site Administration Topics
Topic: Coronavirus pandemic
Replies: 55
Views: 2682

Re: Coronavirus pandemic

Members of this forum, whom I regard as a group of amateur experimental physicists, will enjoy this quote from John Clauser, “To be an experimental physicist, you need to be able to make anything. You need a mill and a lathe. But, most of all, to be an experimental physicist, you need a junkyard.” (...
by Dan Knapp
Tue Mar 31, 2020 2:42 pm
Forum: Announcements and Site Administration Topics
Topic: Coronavirus pandemic
Replies: 55
Views: 2682

Re: Coronavirus pandemic

Frank, I would take issue with your statement that it was unexpected. Take a look at Bill Gates 2015 Ted Talk (https://www.ted.com/talks/bill_gates_the_next_outbreak_we_re_not_ready?language=en). He and others have been trying to ring the alarm bell for years. Those who study these things fully expe...
by Dan Knapp
Tue Mar 31, 2020 11:48 am
Forum: Announcements and Site Administration Topics
Topic: Coronavirus pandemic
Replies: 55
Views: 2682

Re: Coronavirus pandemic

I have been giving thought to how we can get a handle on asymptomatic disease penetration into areas that are not yet hot spots. It has been said that officials in hot spots are all saying “we should have done something sooner,” while those in areas not yet hot spots are saying “we don’t need to tak...
by Dan Knapp
Sun Mar 29, 2020 11:48 am
Forum: Announcements and Site Administration Topics
Topic: Coronavirus pandemic
Replies: 55
Views: 2682

Re: Coronavirus pandemic

For those interested in the hydroxychloroquine issue, the report of the study in France that prompted it Is available online without a paywall (Hydroxychloroquine and azithromycin as a treatment of COVID-19: results of an open-label non-randomized clinical trial - https://www.sciencedirect.com/scien...
by Dan Knapp
Fri Mar 27, 2020 2:35 am
Forum: Announcements and Site Administration Topics
Topic: Coronavirus pandemic
Replies: 55
Views: 2682

Re: Coronavirus pandemic

We need to vastly increase our testing capacity to get a handle on where we are. Areas that appear to be relatively unaffected are likely to have significant infection that just hasn’t manifested itself yet. It was interesting to hear Bill Gates on TV tonight. I was surprised to learn that it was hi...