-
Posts
7862 -
Joined
-
Last visited
-
Days Won
26
Content Type
Profiles
Forums
Events
Everything posted by Sensei
-
Strange message when logging in.
Sensei replied to studiot's topic in Suggestions, Comments and Support
Try clearing your browser cache and cookies. Perhaps something from the previous version of the forum remained there and is interfering with the newer version. ..or the forum software (most likely JavaScript) has problems with your browser version (which is a very common problem).. If you don't want to flush the cache and cookies, just create another profile (URL: about:profiles in Firefox). And use it instead for a few days to see if it misbehaves too. -
Strange message when logging in.
Sensei replied to studiot's topic in Suggestions, Comments and Support
If these messages have been sent and you have email notifications set up at https://www.scienceforums.net/notifications/options/ , copies of private messages should also be in your mailbox. Try the spam folder? They cannot be deleted by the forum mods or antispam bots automatically.. -
A particle at rest cannot be detected by measuring equipment that is in the same reference system as the said particle. A particle is detected if it - emits photons, rarely other particles, with well-known signatures (i.e., frequencies/wavelengths) - reflects photons sent toward it - absorbs photons and ejects photons with lower energies sent toward it - hits the detector by itself (which undermines "being at rest") - produces an electric or magnetic field that causes some reaction inside the detector, such as induction. etc. In classical physics, "being at rest" is often used to refer to very slow-moving objects, with a Lorentz factor close to 1.0.
-
B AR GA IN => HANGOVER..
-
If you don't mind an application with a GUI, there is an application written by Microsoft engineers FileMon: https://learn.microsoft.com/en-us/sysinternals/downloads/filemon Later replaced by ProcessMon: https://learn.microsoft.com/en-us/sysinternals/downloads/procmon Such an application installed on your computer can tell you if someone has used your computer without your permission or if someone has hacked into your computer, even if anti-virus applications find nothing. I don't think it's interesting to monitor file activity to spy on someone (unlike keyboard presses and mouse movements). It is an anti-spyware application, not a spyware application....
-
Of course. You can always write it yourself. Then it will meet all the tight requirements. Source code on MSDN: https://learn.microsoft.com/en-us/dotnet/api/system.io.filesystemwatcher?view=net-8.0 This type of operation is widely used by legitimate applications to monitor changes in configuration files. When you open a text file in editor X and editor Y, and save in one of them, you click another, and it complains that the file needs to be reloaded, this is due to the use of this API..
-
No. The Sun does not rise. That's a premature, childish version of ancient people who didn't understand how the world works. The Earth rotates, causing the illusion that "the Sun rises" and "the Sun sets", when in fact it emits light all the time, just to a different part of the Earth.. Hydrogen fuel burnout.. ..do people know about the future when they prepare supplies for the winter.. ? (In Africa, Central and South America, and the Islands, they don't do that.. year-round fresh fruits and vegetables).
-
..progress is failing miserably so far.. ..with money as the driving force behind any human activity, God doesn't have much faith in this project.. ..that is the beauty of restart option.. you don't remember..
-
Why is there so much pain and suffering in the world?
Sensei replied to nec209's topic in The Lounge
..which will lead to an increase in food prices.. and poor people will have even more trouble buying them than they do now.. In 2022, after the attack on Ukraine, grain prices rose due to the blockade of Ukrainian exports (which is/was a significant global market participant in several areas, such as sunflower oil, 42% of global market share in 2019. It was the oil I used most often, every day before the war. Approximately 1L per month. Its price has doubled). Farmers were "uberhappy".. When everything "calmed down," prices fell to almost "normal" pre-war prices and.. farmers began to complain, go on strike, etc. etc. What is a PITA for some (customers) is heaven for others (farmers, sellers, stock market investors, investment banks playing on commodity exchanges).. Capitalism. -
Why is there so much pain and suffering in the world?
Sensei replied to nec209's topic in The Lounge
...sometimes highly educated and rich people lose touch with the reality that is the reality of most of the rest 8 billions.. ..soon (with growing population and side effects of global warming) you can have a completely new level of "war for resources" e.g. for a fresh clean water.. ..only those who will pay.. This is how capitalism works.. "We"? Who is "we"? Rich Westerners? 70% of Americans who have $1000 or less savings? 1) construction industry is significant industry in the world. The less developed the country, the higher the percentage of GDP. 2) agricultural industry is significant industry in the world. The less developed the country, the higher the percentage of GDP. 3) The whole reason they have problems with shelter, food and water is because they have no money to buy them.. This is how capitalism works.. -
If it is a mechanical toy, it may use the same technology as vintage mechanical clocks.
-
Why is there so much pain and suffering in the world?
Sensei replied to nec209's topic in The Lounge
Meat or plants are a source of food, i.e. a source of stored energy created by autotrophs. Humans can become autotrophs through genetic manipulation of DNA or technology (CO2+H2O+N2+little others-> organic matter) and stop killing other animals and plants to survive. Overpopulation will force such solutions sooner or later.. -
Seeking Clarification on VAT Calculation
Sensei replied to Kiwn Jey's topic in Analysis and Calculus
AFAIK, companies only receive the gross amount, not the net. Even if the b2b catalogs have a net amount. If you receive 200 EUR gross, with 25% VAT, your company has a net 200/1.25 = 160 EUR income, and 200-160 = 40 EUR VAT it will have to send to the government. When a company creates a product catalog, it does the opposite, i.e. 160 EUR net x 1.25 = 200 EUR gross or 200 EUR net x 1.25 = 250 EUR gross. In reality, it is a bit more complicated. A company sells something with VAT to its customers/companies, and has to pay other companies for something (the ingredients to make the product) also with VAT. Sometimes these VAT taxes are different, e.g. food has a low VAT, but a finished meal in a restaurant is taxed differently than the ingredients. Only the difference is sent to the government. The company that sold the ingredients/components also has to pay VAT, but at a different rate. The company that sells the ingredients/components does not know whether the buyer is a retailer or another company and whether it is a VAT taxpayer or not (company can opt-in or opt-out in some industries to some level of income) -
Why is there so much pain and suffering in the world?
Sensei replied to nec209's topic in The Lounge
"Life feeds on life".. You are eating a great meal, but someone died to become your meal.. -
When you buy something for $106 gross, $100 is the net amount and $6 is the tax amount. Then, from this $100, the seller must subtract CIT ("corporate income tax") https://en.wikipedia.org/wiki/Corporate_tax , the rest must be used to purchase goods in the warehouse or to production, employee salaries and other bills.
-
Sustainable and Energy-Efficient Heating System for Remote Villages
Sensei replied to Atabek's topic in Engineering
https://en.wikipedia.org/wiki/Geothermal_gradient "temperature rises in about 25–30 °C/km (72–87 °F/mi) of depth near the surface in most of the world." Reduce the cost of drilling, and everyone can benefit from the heat.. -
certificate error today at SFN
Sensei replied to TheVat's topic in Suggestions, Comments and Support
Procedure for disabling SSL certificate verification errors in Chrome: https://superuser.com/questions/27268/how-do-i-disable-the-warning-chrome-gives-if-a-security-certificate-is-not-trust How about --ignore-certificate-errors in command-line? -
"Color" is a poor human perception of the wavelengths of visible light. When you look at the color "yellow" on an LCD, LED, CRT, smartphone screen, it is simply a mixture of red and green light at maximum values. A human perceives it as the color "yellow". But there is no yellow wavelength there at all! Some screens have three LEDs: red, green and blue. They form pulses. If the end of the pulse is at the beginning of the pulse, it is equivalent to a continuous signal, and we have the light of a given wavelength (R, G and B) on all the time. If the pulse on time is equal to the pulse off time, it is half bright, and so on. Everything else is created in the human brain. All the gray scales, all the intermediate colors. It is simply in the brain. It is called PWM (Pulse-Width Modulation): https://en.wikipedia.org/wiki/Pulse-width_modulation You create it with 0, 1, on time and off time signals.
-
certificate error today at SFN
Sensei replied to TheVat's topic in Suggestions, Comments and Support
@TheVat SFN is certified by Let's Encrypt, so it's free. But you can configure it to renew automatically or manually. If it is configured automatically the script receives too much data about the server it is installed (admin privileges, ability to alter Apache server configuration etc.). It can be used to hack the server and/or install a backdoor. Commercial pro SSL is quite expensive. More expensive than a domain. More expensive than a VPS.. -
certificate error today at SFN
Sensei replied to TheVat's topic in Suggestions, Comments and Support
https://www.google.com/search?q=ssl+certificate+checker "TLS Certificate expiration The certificate expires January 28, 2024 (62 days from today)" "Certificate Name matches scienceforums.net scienceforums.net Valid from 30/Oct/2023 to 28/Jan/2024 IssuerR3 R3 Valid from 04/Sep/2020 to 15/Sep/2025 IssuerISRG Root X1 ISRG Root X1 Valid from 20/Jan/2021 to 30/Sep/2024 IssuerDST Root CA X3" https://www.google.com/search?q=configure+firefox+ssl+ignore https://stackoverflow.com/questions/20088/is-there-a-way-to-make-firefox-ignore-invalid-ssl-certificates Try: "enter about:config into the firefox address bar and agree to continue. search for the preference named security.ssl.enable_ocsp_stapling. double-click this item to change its value to false." -
There are special sprays that protect against water and dirt, but they should be used immediately after buying shoes or washing them: https://www.google.com/search?q=Water+Repellent+and+Dirt+Protection+Spray
-
In India, Pakistan and Bangladesh, it's the dirty water in the Indus and Ganges. People flush leftovers from toilets without sewage treatment plants into it, and then other people (poor majority) wash their clothes in it, bathe in it, drink it, wash their plates, etc. etc. I would not use their water even to flush the toilet..
-
I used to often put my sport shoes in the washing machine.. One, two or three months of daily use per wash. Depends on how often they are dirty.. Depends on where you live..
-
Would you pay for an App that was a very specific AI bot?
Sensei replied to DeckerdSmeckerd's topic in Computer Science
Reread it again. Dune is a sci-fi.. So we will have recursion.. https://en.wikipedia.org/wiki/Recursion_(computer_science) (this can lead to stack overflow ) -
Online Java Compiler Issue: Code Not Executing as Expected
Sensei replied to WalidKhan's topic in Computer Science
.. try using different Java online compiler.. ? I tried this: https://www.programiz.com/java-programming/online-compiler/ And it showed: java -cp /tmp/gCdTYn4aQ5 Main 5 66 But this 66 is simply a lack of EOL.... After changing the code to: System.out.println(""+fruit.length()); all is fine.. java -cp /tmp/gCdTYn4aQ5 Main 5 6 6 ps. Report the problem to the developers who created the online compiler, along with a code snippet, and it will be fixed.