228 reputation
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bio website lightandmatter.com
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visits member for 1 year, 11 months
seen Oct 4 at 0:22

I teach physics at Fullerton College, a community college in Southern California. I have an undergrad degree in math and physics from Berkeley and a PhD in physics from Yale. Back when I was doing research, my field was experimental low-energy nuclear physics.


Nov
6
awarded  Nice Answer
Sep
24
awarded  Autobiographer
Sep
15
awarded  Yearling
Sep
14
answered Efficiently backing up a folder with thousands of files/folders when only structure has changed
Sep
5
revised What does 'source' do?
remove linux tag; this is not specific to linux
Sep
5
suggested approved edit on What does 'source' do?
Aug
25
comment How to recover a removed file under Linux?
some more up-to-date answers: unix.stackexchange.com/questions/122305/…
Aug
23
revised In windows, filter and delete image based on dimension(or any search filters for that matter)
add windows tag
Aug
23
comment SMTP blocking a legit email, no way to contact yahoo or anyone about it?
Yahoo was at one time a leader in anti-spam technology. They were one of the originators of DKIM. They used to have a "Complaint Feedback Loop (CFL) program" where the owner of a domain that implemented DKIM could fill out a form and be whitelisted, but the form is now a broken link. They also used to have a form to report spam from a yahoo address, but that's now gone as well. They've been circling the drain, and I think they just don't have people or resources to devote to these programs anymore.
Aug
23
suggested approved edit on In windows, filter and delete image based on dimension(or any search filters for that matter)
Aug
20
awarded  Student
Aug
17
comment Hiding file in the directory from non-root users
This is a unix question, not an ubuntu question. It might be better suited to unix.stackexchange.com.
Aug
17
answered If my power supply is 700w, do I need a 700w UPS?
Aug
17
awarded  Citizen Patrol
Aug
17
comment my power supply is 400w, do I need a 400w UPS?
@LDC3: A volt-amp is a synonym for a watt.
Aug
6
revised Windows Explorer freezes when dragging files over mapped network drives
add windows tag
Aug
6
suggested approved edit on Windows Explorer freezes when dragging files over mapped network drives
Aug
4
revised How can I permanently remove a seemingly stealthy ad-ware installer?
add windows-7 tag
Aug
4
suggested approved edit on How can I permanently remove a seemingly stealthy ad-ware installer?
Aug
2
comment What is the relation between number of WiFi antenna and number of spatial streams?
In an antenna array like a Yagi, the elements are acting coherently. They're not independent of one another. You don't transmit one signal through one element and an unrelated signal simultaneously through another one.