Differences

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--- 2024lctgmeetingchats [2024.05.08 08:55] – Steve Isenberg
+++ 2024lctgmeetingchats [2024.11.20 09:36] (current) – Steve Isenberg
@@ Line 4: / Line 4: @@
 These are a record of the chats that were passed during meetings in 2024.  They have been edited to a small extent.\\
 To find chats for a given day, for example January 10, 2024, search for datecode 20240110 (2024, month 01, day 10).
+====20241120====
+===Potpourri===
+<WRAP prewrap>
+<code>
+:19:42 From Barry Kort to Everyone:
+	QC3.0 stands for Quick Charge 3.0. It's a fast-charging technology developed by Qualcomm that allows for rapid charging of compatible devices. It works by intelligently adjusting the voltage and current levels during the charging process to optimize charging speed and efficiency.
+:20:14 From Barry Kort to Everyone:
+	Key features of QC3.0:
+	Faster charging: It can charge devices significantly faster than standard charging methods.
+	Intelligent charging: It adapts to the specific needs of the device being charged, ensuring optimal charging performance.
+	Improved efficiency: It reduces charging time while minimizing heat generation.
+	If your device supports QC3.0 and you use a compatible charger, you can expect faster charging times and a shorter wait between charges.
+:21:21 From Rich M to Everyone:
+	For what it's worth, USB-C PD has pretty much overtaken Qualcomm QC.
+:27:23 From Rich M to Everyone:
+	Maybe don't place a MagSafe phone on top of your old floppy disks :)
+:48:13 From tedpk to Everyone:
+	https://www.youtube.com/shorts/K6i9cwLtA3c
+:06:10 From Harry Forsdick to Everyone:
+	Here is a video of the Lex250 show from firefly.com:  https://www.youtube.com/watch?v=EH5VksSzdRU
+</code>
+</WRAP>
+[[lexingtoncomputergroup|return]]
+====20241113====
+===Passwords and Passkeys===
+<WRAP prewrap>
+<code>
+:09:09 From Steve Isenberg to Everyone:
+	Secret questions work if answer is not related to the question
+:10:01 From Bob Primak to Everyone:
+	I think the point is, we don't want to be using the same communication channel for a login and the password reset process.
+:24:10 From Adam Broun to Everyone:
+	Replying to "Secret questions wor..."
+	..and as long as you don’t reuse the answers
+:26:39 From Carl Lazarus to Everyone:
+	Replying to "Secret questions wor..."
+	A prime number has no factors.
+:37:28 From Barry Kort to Everyone:
+	For a while, LCC had an expired certificate, and the browser detected this and put up a warning message.
+:43:00 From Mitch Wolfe to Everyone:
+	Examples of bad certificates: https://badssl.com/
+:09:20 From Steve Isenberg to Everyone:
+	There is no mathematical difference between a “Public” key and a “Private” key.  Your system makes up two keys that work in a PKI system. Then it picks one as “Private” and the other as “Public” and shares the Public one.
+:20:23 From Dan Silber to Everyone:
+	I don't understand. If a password manager generates a different password for each application/server, how can compromising one password affect any other application/server?
+:25:03 From Steve Isenberg to Everyone:
+	In short, those password hint questions are also used as passwords (as they can bypass your secure password and reset it).  Best to use a random response to the password hint questions (or generate another secure password for the answers).
+</code>
+</WRAP>
+[[lexingtoncomputergroup|return]]
+====20241106====
+===OBS screen recorder and Using AI to write code===
+<WRAP prewrap>
+<code>
+:08:38 From Steve Isenberg to Everyone:
+	Why MKV and not other choices like MP4
+:11:47 From Bob Primak to Everyone:
+	MKV is known to support lossless video compression, which can result in larger file sizes but better video quality preservation.
+	https://cloudinary.com/guides/video-formats/mkv-format-what-is-mkv-how-it-works-and-how-it-compares-to-mp4#mkv-vs-mp4-4-key-differences
+:17:22 From Adam Broun to Everyone:
+	Once you’ve recorded something can you edit it in here or would you use some other software?
+:40:34 From Barry Kort to Everyone:
+	LexMedia videos typically require a technical staff of three to six technicians on duty during a live session.
+:43:42 From Steve Isenberg to Everyone:
+	If anyone is interested in touring LexMedia let me know.
+:44:29 From Steve Isenberg to Everyone:
+	We can arrange a tour for a number of us to see the facility and discuss its technology.
+</code>
+</WRAP>
+[[lexingtoncomputergroup|return]]
+====20241030====
+===QR Codes and Drone Sky Shows===
+<WRAP prewrap>
+<code>
+:02:13 From Barry Kort to Everyone:
+	That’s Derek Muller on the video.
+:04:54 From Bob Primak to Everyone:
+	BTW, Ukraine has been building their own drones locally, using parts from the US and EU countries. China won't knowingly supply parts to Ukraine. But the country of origin may ultimately be China, via US and EU importers.
+:07:04 From Carl Lazarus to Everyone:
+	I thought SOS stood for Save Our Ship
+:07:51 From Barry Kort to Everyone:
+	That’s  a “backronym.”
+:10:37 From Bob Primak to Everyone:
+	The bar code "check digit" digit is not independent -- it's a "parity bit".
+:35:52 From Barry Kort to Everyone:
+	Gemini, what does 'QR' stand for in "QR Codes"?
+	Gemini responds:
+	«QR stands for Quick Response.
+	It's a type of barcode that can store a lot more information than traditional barcodes. This is why they're often used for things like product tracking, website links, and payment information.»
+:49:12 From Steve Isenberg to Everyone:
+	But can satellite GPS info provide enough accuracy to position the drones so closely?  Hopefully he’ll explain.
+:50:07 From Bob Primak to Everyone:
+	See last week's discussion. The ground control units are not straightforward GPS units. There's one central processing ground unit which provides the detailed location info needed ot control the drones.
+:53:46 From Bob Primak to Everyone:
+	One amazing thing about the Wonder Woman premiere video: The music was performed live.
+:55:21 From Mitch Wolfe to Everyone:
+	My neighbor said that there have been drone shows in Asia starting 4 years ago.
+:58:20 From Barry Kort to Everyone:
+	Half the current members of Lexington Toastmasters do not have English as their first language.
+:58:53 From John Rudy to Everyone:
+	I am a master at making toast
+:59:09 From Mitch Wolfe to Everyone:
+	Identity politics bleeds into everything...
+:59:33 From Bob Primak to Everyone:
+	In the early days, programmers were on a par with secretaries -- not considered professionals. I know this was not accurate, but that was the perception. after WWII, most of the women in STEM went back to being stay at home wives.
+:59:38 From John Rudy to Everyone:
+	and I was once proficient in both English and FORTRAN
+:00:05 From tedpk to Everyone:
+	As is telling the truth! -- your phone is millions of times more CPU and memory than AGC -- remember that you could see the individual transistors in the 2X 3input NAND gates
+:00:26 From Judy & Mike Alexander to Everyone:
+	In the *early* days, programmers were often mathematicians.
+:01:32 From Bob Primak to Everyone:
+	That was a bit earlier, but well within the WWII era. There was still a shortage of men in these fields.
+:02:44 From Steve Isenberg to Everyone:
+	Do drones ever crash during a show?  Do any ever run out of power and drop to the ground, during a show?
+:03:04 From Judy & Mike Alexander to Everyone:
+	My 'knowledge' of that relates to the early 1950s.
+:03:16 From Bob Primak to Everyone:
+	A recent drone show had a couple of injuries as drones did crash. Not from power loss, but from some sort of navigation errors.
+:04:20 From John Rudy to Everyone:
+	"navigate the regulatory climate".  wow
+:05:17 From Bob Primak to Everyone:
+	Mike -- so early in thew postwar period? Still a shortage of men for civilian work and academic programs.  John -- Yes, this is a common issue in science and technology.
+:06:34 From John Rudy to Everyone:
+	some years ago there were reports of birds getting sucked into jet engines.  I suppose the same could happen with drones
+:09:41 From Bob Primak to Everyone:
+	Drones are a bit small, and they don't have the rapid, large volume of airflow which would endanger birds. Though, collisions are certainly possible.
+:10:02 From John Rudy to Everyone:
+	it was rare to see a female programmer in the 60s.  I started seeing them in the mid 70s.  In 1980 about 30% of the incoming were woman, most right out of college.  To generalize, about 50% of MITs undergraduate population is female
+:11:58 From John Rudy to Everyone:
+	Overall, more than 50% of college graduates are woman as more men drop out
+:12:22 From Bob Primak to Everyone:
+	John -- The 1960's through the 1980's was the real postwar period. Women left the workforce generally. More technical fields lost more women than less technical professions.
+:15:19 From Judy & Mike Alexander to Everyone:
+	Here are some names of early female computer folks I knew of:  Ida Rhodes, Margaret R. Fox, Ethel Marden.  Yoou might find them on Wikipedia.
+:16:52 From Harry Forsdick to Everyone:
+	I think one of the more amazing things here is that Intel seems to have developed this organization generate much less income than their normal business.  Normally I would have expected them to only be doing this to illustrate their product lines — chips etc.
+:17:26 From Bob Primak to Everyone:
+	Interesting list, Mike. But how many of these women are as well-known as their male colleagues who were involved in computer development?
+:19:16 From Judy & Mike Alexander to Everyone:
+	They were well known among computer experts.
+:19:41 From Bob Primak to Everyone:
+	Harry -- public relations and building brand awareness are important parts of surviving as both a business and a consumer tech company. So this is PR at work here.  Building the brand presence among consumers. How many drone shows has AMD done? Or NVidia?
+:20:33 From Mitch Wolfe to Everyone:
+	https://www.forbes.com/sites/aarontilley/2016/01/04/intel-acquires-ascending-technologies/ also invested $60M into Chinese drone company.
+:21:13 From Bob Primak to Everyone:
+	China is a huge market, as well as a major source for components and technical experts.
+:23:46 From S David Kahan to Everyone:
+	ok guys how expensive are these shows as compared to Fireworks shows?
+:27:08 From Bob Primak to Everyone:
+	Much cheaper, potentially. Remember, the drones themselves are fully reusable.
+:27:22 From Larry Wittig to Everyone:
+	How do they look from different perspectives -- like the opposite sides of a football stadium?
+:27:54 From John Rudy to Everyone:
+	plus less dangerous, despite the recent crashes
+:28:40 From John Rudy to Everyone:
+	and they can do things, like the running reindeer, that explosions cannot do
+:28:59 From Bob Primak to Everyone:
+	Last week we saw several views of drone shows over stadiums, including a rock concert venue. The displays are fully 3D and can be enjoyed from many different perspectives. Some of the video footage used wristbands instead of drones.
+:30:02 From Harry Forsdick to Everyone:
+	Sure, I guess the impact for Intel impressing people with their drone shows, results in people thinking of Intel as better than other providers of components, but … I still wonder how long these people we have been seeing will be in this business.  I guess by the time Intel get tired of spending money and personal on this publicity,  they will spin out the drone show organization to some of the current employees.  It turns out that there are already many different developers and presenters of drone shows.  There are other good videos on YouTube about this same topic presented by other companies who offer their services for developing through presentations.  For the Lexington drone show, one of these other organizations were involved.
+:33:58 From Harry Forsdick to Everyone:
+	Although the host for this video started out kind of lame, I will give him credit for covering a lot of different topics needed to pull off these drone shows.  I would love to find a really good video on how drone show developers/operators use computer tools to design a set of instructions for controlling drones in such a show.  Perhaps looking at some of the programs that are available and showing how they work.  Hmm, subject of a new presentation???
+:34:49 From John Rudy to Everyone:
+	why the receivers in his ears?
+:35:25 From Harry Forsdick to Everyone:
+	He’s actually one of those Disney animatronic thingies…
+:36:00 From John Rudy to Everyone:
+	this was apparently done for HS students
+:36:05 From Bob Primak to Everyone:
+	Harry -- OK, if you get started now, when can you get a presentation and maybe a speaker for us on this topic? Seriously, anyone in the group, I would be interested in such a presentation.
+:36:10 From Harry Forsdick to Everyone:
+	Oh, high school students: This is a marketing film to attract new employees
+:36:24 From Mitch Wolfe to Everyone:
+	There are drone choreographing companies and other considerations as explained https://www.sunco.com/blogs/sunco-blog/could-led-drones-replace-your-fourth-of-july-fireworks?srsltid=AfmBOorP8GX4jwG9pSd7rjPBzWvuuEwKNCiFDX2oltrTbZD2q3Edb4B9
+</code>
+</WRAP>
+[[lexingtoncomputergroup|return]]
+====20240904====
+===AI and the Dead and Covid Update===
+<WRAP prewrap>
+<code>
+:22:22 From Barry Kort to Everyone:
+	Ignoble 2024 https://www.youtube.com/watch?v=ukBwV9Lap2A
+:23:32 From Seth Silverman to Everyone:
+	Hi all. This is Seth Silverman.  I’m one of the “new guys”. I am double booked and have to drop. I am happy to help with the previous 10/2 NAS topic if you end up not being able to fill another topic and the speaker is Ok keeping the previous date.
+:07:09 From Barry Kort to Everyone:
+	https://www.sci.news/astronomy/2024-pt5-earth-mini-moon-13280.html
+:07:24 From Barry Kort to Everyone:
+	https://www.npr.org/2024/09/21/nx-s1-5121914/mini-moon-earth-asteroid
+:08:19 From Larry Wittig to Everyone:
+	Re Inter net speed: Most folks use Wi-Fi which may cut the speed at your viewing device in half.
+:14:21 From Larry Wittig to Everyone:
+	Sabrina is now very down on on Physics on how it is praticed at universities. Too much emphasis on turn out a large number of published papersvs. doing useful projects. She has a video on this.
+:15:13 From Barry Kort to Everyone:
+	https://www.youtube.com/watch?v=06-iq-0yJNM&pp=ygUbYnJpYW4gZ3JlZW4gYWkgY29uc2Npb3VzbmVz  and  https://www.youtube.com/watch?v=06-iq-0yJNM&pp=ygUbYnJpYW4gZ3JlZW4gYWkgY29uc2Npb3VzbmVz   both are 45 minutes on consciousness
+:16:00 From Barry Kort to Everyone:
+	That’s Brian Greene World Science Festival episodes with different guests.
+:17:29 From Barry Kort to Everyone:
+	Sabine is mostly a critic and debunker of problematic science news.
+:22:09 From Barry Kort to Everyone:
+	Also, two from Brian Greene on AI ~ https://www.youtube.com/watch?v=EGDG3hgPNp8&t=815s&pp=ygUbYnJpYW4gZ3JlZW4gYWkgY29uc2Npb3VzbmVz  and https://www.youtube.com/watch?v=7wznuB0sKlw&pp=ygUbYnJpYW4gZ3JlZW4gYWkgY29uc2Npb3VzbmVz  Both about 40 minutes.
+</code>
+</WRAP>
+[[lexingtoncomputergroup|return]]
+====20240904====
+===AI and the Dead and Covid Update===
+<WRAP prewrap>
+<code>
+:11:14 From John Rudy to Everyone:
+	so i assume that in 10 years it [ability to deep-fake your ancestors] might be pretty good
+:14:48 From Drew King to Everyone:
+	MS-DEFCON 4: Side effects for dual booters
+:17:06 From tedpk to Everyone:
+	https://www.cell.com/action/showPdf?pii=S2666-3864%2824%2900436-3
+:20:23 From Barry Kort to Everyone:
+	Language is a tool for encrypting information.
+:31:37 From Bob Primak to Everyone:
+	This summer I had COVID, and was up and around. Not even testing positive for a day or two.
+:38:13 From Judy & Mike Alexander to Everyone:
+	Bob - How do you know it wasn't a "flu"
+:40:47 From Bob Primak to Everyone:
+	Because I did test positive on Day Two or Three, and remained positive for 14 days thereafter. I also got very run down on Day Three, and had classic COVID cymptoms, including respiratory difficulties.
+:04:24 From Mitch Wolfe to Everyone:
+	HHS Paxlovid: https://aspr.hhs.gov/COVID-19/Therapeutics/Products/Paxlovid/Pages/default.aspx [article on Paxlovid, a preferred oral antiviral drug to treat COVID-19]
+</code>
+</WRAP>
+[[lexingtoncomputergroup|return]]
+====20240828====
+===Euclid Telescope===
+<WRAP prewrap>
+<code>
+:14:22 From Barry Kort to Everyone:
+	As the universe expands, the interstices between galaxies become increasingly vacant and distant from receding galaxies, so that time speeds up in those interstices.
+:16:29 From Barry Kort to Everyone:
+	Time also runs faster on the moon than on the earth.
+</code>
+</WRAP>
+[[lexingtoncomputergroup|return]]
+====20240807====
+===Metcalfe: Connectivity===
+<WRAP prewrap>
+<code>
+:08:55 From Bob Primak to Everyone:
+	What they did not list was that Bob co-invented ethernet.
+:48:09 From Judy & Mike Alexander to Everyone:
+	My friends from Xerox say that it was uncompetitive in computers because top management was wedded to COPIERS.
+:50:11 From Carl Lazarus to Everyone:
+	When AT&T tried to get into computers, it failed miserably.  Perhaps it was also a case of a monopoly having the wrong mindset for a competitive industry.
+:50:29 From Tim O'Neal to Everyone:
+	I saw you explain Ethernet at the PA HomeBrew Computer Club.  At what point in your career did you appreciate the analogy between numbers of connections to a device as contrasted to the speed and size of a device, i.e. Moore's Law vs. Metcalfe's Law?
+:52:21 From Steve Isenberg to Everyone:
+	Note that this is a recording and not a live presentation.
+:58:11 From Harry Forsdick to Everyone:
+	Re his new work — let’s remember he is getting close to 80.  Astonishing…
+:08:31 From Barry Kort to Everyone:
+	From Boolean Logic to “Fuzzy” Logic (Continuous-Valued Logic) to Combinatorial Logic.
+:20:14 From Steve Isenberg to Everyone:
+	From Wikipedia: In automata theory, combinational logic is a type of digital logic that is implemented by Boolean circuits, where the output is a pure function of the present input only. This is in contrast to sequential logic, in which the output depends not only on the present input but also on the history of the input.
+:21:33 From Barry Kort to Everyone:
+	Isn’t that a Markov Model?  The current state is all that is available, and not the history of how we got to the current state.
+:23:01 From Barry Kort to Everyone:
+	The company, Y-Combinator, takes its name from the fundamental unit of Combinatorial Logic, called a Combinator.
+:23:41 From Barry Kort to Everyone:
+	As I understand it, a Combinator is a species of Function.
+:25:04 From Barry Kort to Everyone:
+	See the introductory book by Raymond Smullyan, “To Mock a Mockingbird” for a beginner’s guide to Combinatory Logic.
+:33:00 From Barry Kort to Everyone:
+	“The Inner Game of Tennis”
+</code>
+</WRAP>
+[[lexingtoncomputergroup|return]]
+====20240731====
+===History of Computers 1969-1994===
+<WRAP prewrap>
+<code>
+:03:02 From Jerome Slate to Everyone:
+	What is the origin of the word byte?
+:05:23 From Barry Kort to Everyone:
+	Gemini sez …
+	«The term "byte" was coined by Werner Buchholz in 1956.
+. Werner Buchholz - IEEE Computer Society www.computer.org
+	He was working on the IBM Stretch computer at the time and wanted a term for a group of bits. He originally considered "bite" but changed it to "byte" to avoid confusion with "bit".
+. Werner Buchholz Coins the Term "Byte", Deliberately Misspelled to Avoid Confusion with Bit www.historyofinformation.com
+	Interestingly, the number of bits in a byte wasn't initially fixed, but it eventually standardized to eight bits. »
+:06:01 From Steve Isenberg to Everyone:
+	Bit is a contraction of Binary Digit.
+:06:19 From Bob Primak to Everyone:
+	First use of the word "byte" by Werner Buchholz in June 1956:
+	http://archive.computerhistory.org/resources/text/IBM/Stretch/pdfs/06-07/102632284.pdf
+	And yes, this was an IBM Stretch computer.
+:08:17 From Bob Primak to Everyone:
+	The name [bit] is a portmanteau of binary digit. (Wikipedia)
+:11:50 From Barry Kort to Everyone:
+	Analog Computers were entirely programmed with patch panels.
+:13:47 From Bob Primak to Everyone:
+	My brother and I had the "digicomp" toys, which were programmed with metal rods.
+:20:26 From Stan Rose to Everyone:
+	https://multicians.org/thvv/7094.html
+:23:14 From Carl Lazarus to Everyone:
+	A T1 was 1.5Mbits/sec
+:24:27 From Bob Primak to Everyone:
+	Al Gore was the first political leader to recognize the importance of the
+	Internet and to promote and support its development.
+	Al Gore and the Internet
+	By Robert Kahn and Vinton Cerf
+	https://web.eecs.umich.edu/~fessler/misc/funny/gore,net.txt
+:25:24 From Carl Lazarus to Everyone:
+	Amazon was originally named "Cadabra".  Some people thought it was "Cadaver", not so good.
+:28:12 From Carl Lazarus to Everyone:
+	The first proposal for a survivable military network was done at the RAND corporation, by Paul Baran.  This was separate from DARPA.
+:32:36 From Judy & Mike Alexander to Everyone:
+	Modems were (I think) used as early as World War II.  MODEm stands for modulate/demodulate.
+:33:58 From Bob Primak to Everyone:
+	In 1941, the Allies developed a voice encryption system called SIGSALY which used a vocoder to digitize speech, then encrypted the speech with one-time pad and encoded the digital data as tones using frequency shift keying. This was also a digital modulation technique, making this an early modem. (Wikipedia)
+:43:47 From John Rudy to Everyone:
+	I remember now, the T1 was 1.544 megabits/sec and was quite expensive, hundreds of dollars/month
+:56:41 From Barry Kort to Everyone:
+	How many voice channels does a T1 line carry?
+:57:37 From Adam Broun to Everyone:
+:57:52 From Barry Kort to Everyone:
+	Gemini sez…
+	«A T1 line can carry 24 voice channels.
+. What is a T1 Line? - GoTo www.goto.com
+	It's important to note that one of these channels is typically used for signaling information (like caller ID), leaving 23 channels for actual voice communication.
+. What is a T1 Line and How Fast is T1 Internet? - One Ring Networks oneringnetworks.com»
+:14:03 From Barry Kort to Everyone:
+	BBN developed the Interface Message Processor (IMP) for packet switching.
+:17:06 From Barry Kort to Everyone:
+	DECnet, Ethernet, AppleTalk, and UUNET.
+:19:07 From Barry Kort to Everyone:
+	The press release for the BBN IMP was misreported as the Interfaith Message Processor.
+:19:28 From Mitch Wolfe to Everyone:
+	OSI model
+	by layer
+.  Application layer
+.  Presentation layer
+.  Session layer
+.  Transport layer
+.  Network layer
+.  Data link layer
+.  Physical layer
+:25:36 From Bob Primak to Everyone:
+	Paul Baran and Donald Davies independently invented the concept of digital packet switching used in modern computer networking including the Internet.[1][2][3]
+:25:45 From Bob Primak to Everyone:
+	(Wikipedia)
+:27:05 From Barry Kort to Everyone:
+	Packet Switching was an evolutionary advance based on Time-Division Multiplexing.
+:29:26 From Barry Kort to Everyone:
+	Captain Crunch (toy whistle) imitated the tones of In-Band Signalling.
+:33:23 From Bob Primak to Everyone:
+	Another spoofing of the universal signaling tones involves creating a voice-mail message which begins with the three-tone signal that the number is out of service. This disconnects most robo-dialers for spam calls.
+</code>
+</WRAP>
+[[lexingtoncomputergroup|return]]
+====20240717====
+===Developing the Abiocor total artificial heart===
+<WRAP prewrap>
+<code>
+:10:59 From John Rudy to Everyone:
+	In 1971 my brother worked for GE. They developed a unit to oxygenate blood during an operation when the body couldn't do it.  Thy were 3 times as successful as alternative devices.  But it turned out that one of the  pieces of the machine was built using a piece of material built in a machine that has asbestos.  No asbestos in the part, but the process got shut down and his machine came off the market.
+</code>
+</WRAP>
+[[lexingtoncomputergroup|return]]
+====20240703====
+===Buying a Computer===
+<WRAP prewrap>
+<code>
+:41:51 From Bob Primak to Everyone:
+	CPU-X works like CPU-Z for Linux. Mac is still in its own world, as far as I can tell.
+:42:17 From Bob Primak to Everyone:
+	https://thetumultuousunicornofdarkness.github.io/CPU-X/
+:43:30 From Bob Primak to Everyone:
+	Mac system info is in the Mac interface itself.
+:03:34 From Drew King to Everyone:
+	https://www.neowin.net/news/windows-10-will-get-five-years-of-additional-support-thanks-to-0patch/
+:04:53 From Drew King to Everyone:
+patch is a yearly subscription that costs 24.95 EUR (~$27)
+:28:53 From Larry W. to Everyone:
+	Usb-c is 40 GB/s; hdmi2 is 18 GB/s
+</code>
+</WRAP>
+[[lexingtoncomputergroup|return]]
+====20240619====
+===5G & Beyond Update===
+<WRAP prewrap>
+<code>
+:15:36 From Steve Isenberg to Everyone:
+	Would these frequencies be the ones your phone would need to cover to use 5G?
+:31:26 From Stan Rose to Everyone:
+	What is the advantage of having the label "advanced broadband", other than faster is better
+:42:19 From Stan Rose to Everyone:
+	Just like the rollout of 5g last year was delayed by the fear of airport interferwnce
+:12:52 From Mitch Wolfe to Everyone:
+	Is China participating in IMT-2030? In what role?
+</code>
+</WRAP>
+[[lexingtoncomputergroup|return]]
+====20240529====
+===Oppenheimer===
+<WRAP prewrap>
+<code>
+:52:25 From Judy & Mike Alexander to Everyone:
+	I had read that Ernest Lawrence proposed and lobbied for Oppenheimer as the chief at Los Alamos.
+:57:14 From Judy & Mike Alexander to Everyone:
+	Oppenheimer had created a theoretical physics group at UCal Berkeley and thus developed a modicum of leadership/managerial skills.  He was one of the best-known American-born theoretical physicists in the US.
+:07:27 From Barry Kort to Everyone:
+	Emma Noether.
+:10:07 From Barry Kort to Everyone:
+	Noether’s Theorem established a relationship between Symmetry and Conservation.
+</code>
+</WRAP>
+[[lexingtoncomputergroup|return]]
+====20240515====
+===Spacecraft Technology===
+<WRAP prewrap>
+<code>
+:17:23 From Judy & Mike Alexander to Everyone:
+	"Design lifetime":  Please explain how that number has been arrived at.
+:18:55 From Steve Isenberg to Everyone:
+	Has any thought been given to Space Elevators?
+:19:06 From Bob Primak to Everyone:
+	While the program never actually lofted a crewed space station, those nearly six years were quite eventful, featuring the selection of 17 MOL astronauts, the remodeling of NASA's two-seat Gemini spacecraft, the development of the Titan-3C launch vehicle and the building of an MOL launch site at Vandenberg Air Force Base in California.
+	Cancelled in June, 1969.
+	Declassified: US Military's Secret Cold War Space Project Revealed
+	https://www.space.com/31470-manned-orbiting-laboratory-military-space-station.html
+:28:48 From Carl Lazarus to Everyone:
+	Needham has an elementary school named after Suni Williams
+:29:10 From Stephen Quatrano to Everyone:
+	https://en.wikipedia.org/wiki/Sunita_Williams
+:34:57 From Adam Broun to Everyone:
+	Is “up” the same direction throughout the ISS?
+:38:19 From Steve Isenberg to Everyone:
+	Would it be possible (availability, permission, technology) for us to have an astronaut on the space station present to our group?
+:43:44 From Larry Wittig to Everyone:
+	How do you provide water, is some of it from fuel cells?
+:51:01 From John Rudy to Everyone:
+	see info on Gary: https://www.nasa.gov/people/dr-gary-kitmacher-nesc-academy-biography/
+:53:29 From Larry Wittig to Everyone:
+	Is NASA looking into non-chemical propulsion?
+:54:49 From Barry Kort to Everyone:
+	It looks like the Sci-Fi writers completely missed the boat with their concept of “flying saucer” geometry for spacecraft design..
+:01:26 From Judy & Mike Alexander to Everyone:
+	Since the moon's surface is rough, how will such a long rocket be stabilized upright when it lands?
+:04:18 From Adam Broun to Everyone:
+	For the gateway station, isn’t getting into a rectilinear orbit very expensive? Or is there some neat trick to get there?
+:08:09 From Adam Broun to Everyone:
+	Replying to "For the gateway stat..."
+	Next slide partially answered it- assembly in moon orbit
+:23:16 From John Rudy to Everyone:
+	Frank Herbert had it right with Dune for water reclamation
+:25:36 From Stephen Quatrano to Everyone:
+	What have you learned about public/private collaboration over the course of your career?  How do private entities vs public entities manage risk differently?  How has collaboration changed over time if at all?
+:33:42 From Stephen Quatrano to Everyone:
+	Replying to "What have you learne..."
+	Quality and trust are other dimensions of collaboration that interest me.
+:33:56 From tedpk to Everyone:
+	AMS -- Alpha Magnetic Spectrometer --- has been on ISS and Billions of Cosmic Rays have been observed -- No statements about Very High  Energy Cosmic Ray  Exposure for extended  duratiuons
+:45:35 From John Rudy to Everyone:
+	how can you bring something so huge down safely
+</code>
+</WRAP>
+[[lexingtoncomputergroup|return]]
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