The AZ-0001 Co2 meter. Vendor of a CO2 meter with zero to 2000 ppm co2, 30 or 50 ppm accuracy, serial data output, humidity, and temperature. The meter appears on a big name cheap sales website for a little under $200.
One problem with the yellow AZ-0001 CO2 meter is the meter has to be manually restarted if the 9 volt input DC power is interrupted. A second problem is the CO2 value is quite sensitive to my breath when the meter is running on the garage workbench. For outdoor readings the mechanical problem is to put the meter at least 8 feet away from passing humans and also have the meter accessible for restarting.
The same vendor sells a hockey puck device which I have also used. I stopped using the hockey puck due to it's humidity measure device. That was about 4 years ago.
Contact me for a copy of my Python CO2 meter software. The output of the software is lines of unixtime, GPS position, CO2, humidity, and temperature. leemck at gmail dot com.
My CO2 interest is in the global excess CO2 problem.
About fiften years ago I was reading child development books. I discovered this wonderful thinker Jean Piaget.
I think Piaget's first book translated into English caused a great deal of excitement, especially at the University of Chicago. Piaget's book "The Language and thought of the Child" I conjecture was the inspiration for organizing a school around a great books list and also for teaching mathematics by the demonstration and discussion method.
At St. John's the freshman math tutorial meant each student stood up, drew a triangle, lettered the corners, and recited the proof and discussed and explored the ideas and assumptions.
For myself at St. John's the great books seminar became a very slow process of analyzing and trying to restate writings. By the end of the Junior year, my final academic review called a Don Rag I can say It Did Not Go Well ("what happened Lee?").
Regarding the math side of things, a few years later I got a technician job at Cal Tech and I was allowed to enroll in Cal Tech a calculus class. By November I was dreaming of flying, I swooped on updrafts of assumptions and bold substitutions and clever identities.
I couldn't solve the winter mid term exam problem but to this day I am grateful that I saw and did the two extremes of math.
These days, I don't do much Calculus, but I do and think about knot theory and coiling. I keep stumbling across pi/2 as I coil or fold air hoses or ropes. Why must three utility pipes connecting to three houses cross? Why are the computer wires always a tangle"?
Regarding the Great Books, I recommend the Meno and then the Socratic big 5. These books are still a source of puzzlement to me.
A final question: What happens in the brain when a student stands up and does a proof at the black board? Why do opera singers stand up to sing? Why is standing up to walk a neurological milestone in the development of the child?
The genius of the printer business is printers can be programmed to fail and become unrepairable without breaking the law.
Once the warranty period of the printer expires, it is not illegal withhold the service manual for a printer. It is not illegal to withhold the electrical schematic or operating temperature specification of the fuser. It is not illegal to withhold the details of the toner chemistry. It is not illegal to withhold the printer programming language specification.
It appears to me that what is going on in the printer business (and the automobile industry too) is a deliberate push to make cars and printers consumer items.
The other side of the printer business is a inkjet or laser printer ought to be able to work for 40 years. A little distilled water soak ought to fix any clogged inkjet. A couple rollers ought to fix any paper feed problem.
One answer to Why is the printer industry so scammy is Consumerism in America is now in decline. Many commentors here, just like me have thrown a pile of printers in the trash.
The last 30 years of printers that turn in to garbage is an irretrievable waste of potentially beautiful machinery.
Good question you ask. Many good comments, thank you other posters.
First comment is allow more time for things you want to recall to appear.
Second comment is I got a small benefit by taking vitamin B12. Set up a note sheet, take some vitamin B12 the night before you want to remember something and write down the results.
Along those lines, I mention Daniel Khaneman's book Thinking Fast and Slow.
I suggest you study the phrase 'memory impairment'and until you find a much better phrase. A second book I recommend is Norbert Weiner in Cybernetics Command and Control in animal and machine". He proposed that the human brain differs from computers because the memory more or less lasts for the life of the human. In computers, the memory is reset.
His wife died, he is experiencing grief, he is a poet, he is already experiencing taking care of his kids without his dead love. I dislike the deceptive funeral home language regarding death. It hurts mightily, death is motionless with new problems pouring in from all sides for the survivor.
Regarding inflation, I recommend this book covering the 50 year inflation battle that began after World War II ended. "The Great Inflation and its aftermath." by Robert J. Samuelson.
In this time, May 26th, 2021 the economic environment is changing, Inflation, I see but what really concerns me is the Greta Thunberg Financial Event Horizon. The Date of the event horizon is Earth Day seven years hence. The event horizon is when disaster costs will rise and GNP will decline. Inflation affects both of those items, but in the wrong direction.
Finally, note he is inviting us to sign up and receive his book. Giving gifts is the stately, dignified and honorable way to survive. Best wishes to Curtis Yarvin.
I'll add this. I work with severely disabled kids as a classroom aide. I keep getting the impression that the difference in their thinking and mine is quite small. I am geting to be 73 years old and the medical fact is I am probably losing brain cells. But the illusion that I can think remains pretty complete. I see an increasing time delay in the process of summoning detail from old memories. I can also see an increasing fragility in the old memories.W With warmth, I can tell the student I work with "I'm getting a little slower now too.
Underlying the process of thinking is a flow of sensory data that comes into contact with memory. There is a matching process taking place. Laughter is an example of a mismatch between sensory input and memory. The mismatch triggers jerks in the motor control system. The matching process goes on for a while, giving rise to what has been described by Kahneman as fast thinking and slow thinking. A lot of the brain is incoming somatic sensory signals and outgoing motor control signals. Thinking with words and symbols is a tiny part of the brain's receptive and expressive ability. A baby pulls itself to stand and experiences an exhilarating thrill as the balance organs and muscle circuits fire away to hold her body upright. That is why opera singers stand up to sing, that is why the bailiff in a court says "All Rise". And we haven't even begun to do thinking in the academic sense.
"A Society Dies..." is a touching piece of writing.
"Touching" here means a chill from the alone-ness and menace of death invoked.
I recently tried to analyze the rhetoric of the radio talk show listener conservative I work for.
It turns out rhetorical analysis is harder to do than it looks, and you have to plug away for several days before the fallacies and manipulative techniques appear.
My sister died last week and she preceded her own death by developing a policy of withdrawing from happy activities or thoughts. When I visited her a month ago, she said no to every happy activity I proposed.
So here is a simple analysis: The writer of this article has taken pains to be inaccessible to those who wish to engage in dialogue. By accident, he is a member of the uncaring elite. To which I would say, what does "to care" mean?
The article title and headline sentence confuse the reader.
Proprioception is an interesting and exciting mental process that is important to artistic expression, human growth, mental development, and cultural communication.
Whew. The opera "Nixon in China" has an embedded ballet. The embedded ballet has the uncanny property that in a few minutes it retells the entire story of the opera.
Why is ballet so expressive? Why does the nation of Russia need ballet? Notice on youtube, the Russian dancers are extraordinary. A prima ballerina who came to New York, drew comments that "She dances in Russian." And the untutored viewer could see it too. The nation devotes considerable resources to the art.
What is happening when 1st through 5th graders in an American Elementary school run around and scream at the beginning of the school year? Were they running around to generate huge amounts of propriaceptive signals to the brain? Is the screaming part of the brain sending motor control signals every which way?
Finally, why do opera singers stand up to sing? Except when they are dying or portraying a special propriaceptive statement like kneeling (to pray or be beheaded).
To rephrase this article: The impact of direct air carbon capture will require enormous input of energy or enormous tonnage of materials such as limestone.
Another approach to reducing the human contribution to atmospheric carbon dioxide is to have each person adopt a low CO2 emission life style.
Just like a massive carbon capture technology, enabling individuals to adopt a low CO2 emission lifestyle is not a free proposition. How much to pay an individual to implement a specific low CO2 life style? Gasoline (the high emission variety 19.6 lb per gallon) at $3.50 a gallon produces a metric ton of CO2 for $393.
I have a website where I explore the idea of "not emitting fossil fuel CO2." www.lowco2america.com
Instead of thinking in terms of "cost of extracting CO2" I have sort of stumbled on the idea of "recapitalizing America around social systems that do not emit CO2."
My scheme has a payment of $394 per metric ton of CO2 not emitted. The payment from govt. funds is a prompt no bank account required electronic transfer payment. What it can purchase is a continuing free share of the electricity generated by the workplace parking lot, or an electric car, where the car is free is provided the driver carries 2 or 3 workplace commute riders. The car runs with an average load of 1 driver and 2 or 3 riders. The payment can pay for other things or be redeemed for cash, optionally.
The ancient Chinese Tao Te Ching poem Verse 80 describes a happy society that might sound a little bit like an America that figures out how to live well with 2 mt per person CO2 emissions, maybe in 40 years?
In 1973 I was 26 years old and for about ten years I tried to build a library that included the fundamental computer books. Your education needs to exceed the narrow field of computer reference books only.
First comment is I did get the Knuth books but I never got the college courses and problem solving work to use them. As Professor Marc Nicolet said: You have got to do the problems to master the subject (referring to his Caltech area of physics).
The second comment is computing is all binary. Go beyond that and learn about fractals, chaos, topology and knot theory. For instance, in Kaufman's Knot Theory, there are obviously true but rigorously unproven theorems in the first chapters of the book.
The third comment is after Turing's paper and Godel's uncertainty arguments, all real world computer programs, no matter how carefully they employ something from a fundamental book, must be tested.
I have been managing passwords for more than 12 years with an encrypted vi file. Inside the file, every login uses a unique password. I generate unique passwords in batches of 100 or so using a script that I list below.
This scheme has the obvious single point of entry weakness and a further keystroke logger vulnerability. I have never had any of the 360+ accounts and logins compromised.
It is very important to not use the browser for secure activity if one has been browsing Internet junk recently. I have no doubt that all kinds of keystroke logging scripts do get started. I occasionally run rkhunter and top looking for intrusions and compromises.
Script for making big batches of passwords:
File of passwords. First 99 are lettes usable for names, next 100 is pasword strings. 1-6-2008
Here is the command line:
(/usr/bin/apg -a 1 -n 99 -m 11 -x 13 -M CL; /usr/bin/apg -a 1 -n 100 -m 17 -x 23 -M NCL ) | cat -n
"The Unseen Threat to America..." is an magazine article that is a pile of claims and assertions that omits the appropriate background suitable for a thinking person to judge the claims.
The editing removed the author's disclosure of purpose, removed the methodology, removed the inquiry explanation, and removed the sources of data.
Also I found that the entire Time Magazine website is deliberately organized to prevent any reader from posting any comment.
In it's edited form, this article is the creation of yet another kind of insecurity, confusion and fear.
Regarding the basic thesis that "We Don't leave our hometowns." The author doesn't pay the slightest attention to demographics (we already moved 30 years ago) nor the outrageous rents and home prices of Northern California.
Here is the big puzzle. Why are the Editors of Time Magazine publishing such an article? I suspect that Time shares a view of it's readers that People Magazine has: It is a publication for sitting on the toilet and having a brief transient "wish I was one of the beautiful people" moment.
About 30 years ago, my VW and a thousand dollars of tools, having been stolen and stripped, I left my low budget Malibu bodysurfing, workbench with an oscilloscope, free Lincoln Heights cabin and moved to Berkeley and enrolled in the first UCB extension course for the holy grail (at the time) of learning Unix and C programming.
I started building the best library of computer programming books I could buy and about 1/4 of the books mentioned here were my choice then too.
My recommendation to you is extend your computer science interest by going to college and mastering the fundamentals and also in your junior and senior year join in on the most interesting academic or scientific programming projects you can find. These days a Degree is required and your employer is hoping to benefit from the esoteric work you did in college.
https://www.co2meter.com/collections/handheld/products/az-ha...
One problem with the yellow AZ-0001 CO2 meter is the meter has to be manually restarted if the 9 volt input DC power is interrupted. A second problem is the CO2 value is quite sensitive to my breath when the meter is running on the garage workbench. For outdoor readings the mechanical problem is to put the meter at least 8 feet away from passing humans and also have the meter accessible for restarting.
The same vendor sells a hockey puck device which I have also used. I stopped using the hockey puck due to it's humidity measure device. That was about 4 years ago.
https://lessco2essay.blogspot.com/2015/08/carbon-dioxide-met...
Contact me for a copy of my Python CO2 meter software. The output of the software is lines of unixtime, GPS position, CO2, humidity, and temperature. leemck at gmail dot com.
My CO2 interest is in the global excess CO2 problem.