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Combined display of all available logs of the change wiki. You can narrow down the view by selecting a log type, the username (case-sensitive), or the affected page (also case-sensitive).

00:45, 3 January 2023 Elie talk contribs created page Solar (Created page with "Solar power uses the sun as an energy source. ==Types== * Photovoltaics (PV) (solar panels) - generate electricity * Solar thermal panels - use sunlight to directly heat air or water, without involving electricity * Concentrated solar - produce high heat by focusing enough sunlight into one area. The heat can be then used for generating electricity or for industrial processes. <!-- TALK: maybe also mention here: * combined photovoltaic+thermal panels...")
22:37, 2 January 2023 Elie talk contribs created page New hydro (Created page with "How much new hydropower can be built? Where is it viable? This is a page for some answers. New hydro opportunities might be split into 2 general categories: # Places where hydropower hasn't been ''economically'' viable, even though it's ''geographically'' viable. This might be the case in some developing nations.{{rn}} # Places where hydropower is ''already'' built and powering the local grid, but ''more'' power would be needed if people switch to electric vehicle...")
22:09, 2 January 2023 Elie talk contribs created page Hydropower (Created page with "Hydropower uses the motion of water (typically rivers) to generate electricity. This is overall a green source of energy but is only available in ''some'' parts of the world.{{qn}} Most hydro power plants that can be built, already have been - with some exceptions.")
21:51, 2 January 2023 Elie talk contribs created page Baseload (Created page with "The term "baseload" refers to electricity that has to be available 24/7. This is a challenge for intermittent energy sources like solar and wind. ==How much baseload power do we need?== Most optimistically, only about 10% of global energy has to be baseload. The other 90% consists of ''industry'', ''road vehicles'', ''heating'', etc. In principle, these could run entirely on energy from peak-supply times of day. For example in a mostly-solar scenario...")
19:12, 30 December 2022 Elie talk contribs created page Electric vehicles/fossil fuel powered (Created page with "If electric vehicles are powered with electricity that was generated by fossil fuels, is it worse for the environment than just driving a gas car? {{dp |<nowiki>electric_car.efficiency</nowiki> |<nowiki>100 miles per 34.6 kWh</nowiki> |<nowiki>The "gas mileage" equivalent for an average electric car.</nowiki> |<nowiki>Average Electric Car kWh Per Mile [Results From 231 EVs]</nowiki> <nowiki> ecocostsavings.com › average-electric-car-kwh-per-mile </nowiki>...")
01:32, 28 December 2022 Elie talk contribs created page Heat pumps (Created page with "An electric heat pump is one way to heat a building. It works a lot like air conditioning but in reverse: The hot air goes indoors; the cold air goes outdoors. Heat pumps are '''more energy-efficient''' than electric heaters.{{qn}} ==Research needed for this page== * ''How much'' more energy-efficient can a heat pump be? ** How does this depend on outdoor temperature? * How much energy does it typically take to ''manufacture and install'' a heat pump? *...")
00:43, 28 December 2022 Elie talk contribs created page Rooftop solar (Created page with "Rooftops are a good place to put solar panels, because: * They are close to where the energy is typically used. * They need no extra land (unlike solar farms). That's an environmental footprint avoided. '''Summary:''' * In most cases, rooftop solar ''could'' provide enough energy for '''homes''', other '''buildings''', and '''charging''' electric vehicles. ** Exception: heating in cold parts of the world ** Exception: high-density cities * '''Ha...")
22:31, 27 December 2022 Elie talk contribs created page Solar panel minerals (Created page with "It takes minerals to make solar panels. Some minerals are scarce. This might be an issue if we want to scale up green energy enough to replace fossil fuels. What we need is a full chart of all minerals (and their quantities) involved in all solar panel technologies. Apparently this doesn't exist on the internet already, so we have to make it ourselves. The tables below are currently a work-in-progress. The 3rd column of the tables below is based on a sc...")
21:51, 27 December 2022 Elie talk contribs created page Template:Rn (Created page with "<nowiki>[</nowiki>research needed<nowiki>]</nowiki>")
05:40, 24 December 2022 Elie talk contribs created page Calc:If all vehicles were electric (Created page with "Suppose we keep the status quo of transportation, but make all vehicles electric. This raises some basic questions: * How much electricity would we need to power all the vehicles? * How much energy would it take to manufacture vehicles - both in the short term and long term? * Which critical minerals would we need, and how much of each? * Could the minerals be recycled from vehicles at their end-of-life? ==Powering the vehicles== Electric cars are...")
08:51, 30 November 2022 Elie talk contribs created page Code:fullscreen main.h (Created page with "C header for easy OpenGL programming. Gets rid of most boilerplate code. ==Code== <syntaxhighlight lang="c"> ** Elie's OpenGL wrapper Creates a fullscreen vsync'd context with game-style access to keyboard & mouse. Version 1.1 **: #pragma once // This header file implements main(). // Here are the functions you must define in your own code: void init(); void draw(); void done(); /** Notes: * * The init() function is called once at startup. This is the place...")
08:45, 30 November 2022 Elie talk contribs created page File:font.data-uint8-1004x19 (Bitmapped font file used by Code:text-quads.h)
08:45, 30 November 2022 Elie talk contribs uploaded File:font.data-uint8-1004x19 (Bitmapped font file used by Code:text-quads.h)
08:36, 30 November 2022 Elie talk contribs created page Code:text-quads.h (Created page with "<syntaxhighlight lang="c"> // text-quads.h // Functions for drawing text in OpenGL, using textured quads. #define TQ_TEXTURE_WIDTH 1004 #define TQ_TEXTURE_HEIGHT 19 #define TQ_TEXTURE_FILENAME "font.data-uint8-1004x19" // DEPENDENCY: This texture file. /* Copyright 2022, Elie Goldman Smith This program is FREE SOFTWARE: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either ver...")
08:34, 30 November 2022 Elie talk contribs created page Code:nodes.c (Created page with "<syntaxhighlight lang="c"> /*** This is my new graph nodes program. I don't know what to call it yet. To compile: gcc nodes.c -o nodes -ffast-math -O -lm -lGL -lglut -lpthread This program has runtime dependencies: File in working directory: "font.data-uint8-1004x19" Installed packages: 'zenity' and 'leafpad' Copyright 2022, Elie Goldman Smith This program is FREE SOFTWARE: you can redistribute it and/or modify it under the terms of the GNU General...")
20:45, 12 November 2022 206.253.78.9 talk created page Talk:Nodes (Created page with "==Start of something== <syntaxhighlight lang="html"> <html><head><script> function $(id) { return document.getElementById(id); } focus = 0; next = 1; nodes = 0,1,0.5; connections = []; function focusOn(i) { focus = i; } function newNodeFrom(i){ connections.push([i, next]); nodes[next++]=[nodes[i][0]+Math.random()*0.01, nodes[i][1]+Math.random()*0.01]; } function newNodeTo(i) { connections.push([next, i]); nodes[next++]=[nodes[i][0]+Math.random()*0.0...")
03:39, 11 November 2022 Elie talk contribs created page File talk:food-funnel.png (Created page with "==This diagram doesn't currently include fish.== Here's one way that fish could maybe be included in future versions of this diagram: * The top part would be renamed from 'crops harvested' to 'production primary', and would include ''wild-caught'' fish. * The 'animal feed' would include any human-edible calories fed to ''farmed'' fish. * The 'animal products' produced would include the ''farmed'' fish. To put things in perspective, seafood contributes about 12g protein/d...")
19:01, 9 November 2022 Elie talk contribs created page Minerals (Created page with "In pursuit of green energy technology, we need a significant amount of scarce metals. [https://www.iea.org/reports/the-role-of-critical-minerals-in-clean-energy-transitions/mineral-requirements-for-clean-energy-transitions This article] is a good start, but we should try to quantify the situation more rigorously for "full replacement of fossil fuel energy" scenarios.")
05:39, 8 November 2022 Elie talk contribs created page Zero food-feed competition (Created page with "Cows, goats and sheep can digest fibre and use it as calories. These animals can thus eat a few things that don't compete with food production: # Crop residues (also known as biomass waste) which are the fibrous leftover parts of food crops we have to grow anyway. # Grass from pasture lands. This feed can't be eaten by humans, chickens, or pigs. {{x|Except in very small quantities for roughage only. Humans, chickens and pigs can't extract any s...")
20:35, 4 November 2022 Elie talk contribs created page Why Bitcoin's energy usage is directly proportional to its price (Created page with "By design, bitcoin mining pays out exactly 6.25 BTC, every 10 minutes - to someone, somewhere in the world. {{x|In practice, this usually gets split between many people in a mining pool.}} The more "work" a miner does, the greater their chances of getting these bitcoins. The network automatically adjusts the mining difficulty. If mining is too hard, it would be so unprofitable that everyone would stop mining - this would cause the mining difficulty to automatically...")
20:33, 4 November 2022 Elie talk contribs created page Talk:Wind (Created page with "==Sulfur hexafluoride== wind power uses sf6? * what's it for: electrical switching apparently * how much is it currently using * how much more would it currently use if wind or solar powered the world * total ghg per terajoule: is it at least better than coal? * any alternatives? ~~~~")
05:42, 4 November 2022 Elie talk contribs created page the change wiki:Redesigns (Created page with "This page is for ways the wiki could be completely redesigned. ==Wiki engine== make a new wiki engine * use case ** ultra short "pages" that heavily link to each other ** the whole wiki as one gigantic directed graph (flow chart style) * text node ** displayed as a rounded square *** zooming in increases width but left-right-clamped to screen *** if (width clamped) height = whatever needed for text. but also adjusted so the text doesnt suddenly shift vertically when you...")
01:41, 4 November 2022 Elie talk contribs created page Drug legalization (Created page with "==Dilution== One method to legalize harder drugs (such as cocaine, MDMA, heroin, methamphetamine, etc) it to have them sold ''only'' in diluted form, in regulated drinks: * The dosage should be low enough that it's impossible to overdose without consuming at least 5 litres (which is impossible for any stomach to hold at once). * The drink should not be flavored or labelled in a way that appeals to children.  This is very similar to how...")
01:29, 4 November 2022 Elie talk contribs created page Energy storage/specs (Created page with "{|class="wikitable" | !Type !Specific energy (watt hours per kg) !Specific power (watts per kg) !Charge time (minutes) !Self-discharge (% per month) !Roundtrip efficiency (%) !Lifespan (charge-discharge cycles) !Lifespan (years shelf life) |- |Lithium-ion batteries |- |Lead-acid batteries |- |Iron-redox flow batteries |- |Flywheels |- |Hydrogen gas + fuel cell |- |Hydrogen gas + combustion engine |- |Hydrog...")
22:11, 31 October 2022 Elie talk contribs created page Energy demand categories (Created page with "==Electricity that must be available 24/7== * Home electricity usage ** Except for heating and cooling - those have other options (see below). * Commercial electricity usage (includes retail stores, restaurants, offices, and the service sector in general), except for heating and cooling (those have other options - see below). ** Except for heating and cooling - those have other options (see below). * Trains for public transit ==Electricity that does not have to...")
19:50, 27 October 2022 Elie talk contribs created page File:mont-royal-vs-quebec-scale.ogv (Understanding the scale of city greenspace vs country greenspace.)
19:50, 27 October 2022 Elie talk contribs uploaded File:mont-royal-vs-quebec-scale.ogv (Understanding the scale of city greenspace vs country greenspace.)
19:48, 27 October 2022 Elie talk contribs deleted page File:mont-royal-vs-quebec-scale.ogv (Gonna try reuploading because it still thinks it's audio)
19:48, 27 October 2022 Elie talk contribs moved page File:mont-royal-vs-quebec-scale.ogg to File:mont-royal-vs-quebec-scale.ogv without leaving a redirect (Mediawiki seems to think that any .ogg file is audio. Stupid.)
19:38, 27 October 2022 Elie talk contribs created page File:mont-royal-vs-quebec-scale.ogg (Understanding the scale of city greenspace vs country greenspace.)
19:38, 27 October 2022 Elie talk contribs uploaded File:mont-royal-vs-quebec-scale.ogg (Understanding the scale of city greenspace vs country greenspace.)
19:23, 27 October 2022 Elie talk contribs created page File:mont-royal-vs-quebec-scale.mp4 (Understanding the scale of city greenspace vs country greenspace.)
19:23, 27 October 2022 Elie talk contribs uploaded File:mont-royal-vs-quebec-scale.mp4 (Understanding the scale of city greenspace vs country greenspace.)
18:49, 27 October 2022 Elie talk contribs created page File:mont-royal-vs-quebec-scale.mkv (Understanding the scale of city greenspace vs country greenspace.)
18:49, 27 October 2022 Elie talk contribs uploaded File:mont-royal-vs-quebec-scale.mkv (Understanding the scale of city greenspace vs country greenspace.)
18:45, 27 October 2022 Elie talk contribs created page Montreal/Mont-Royal (Created page with "Mont-Royal is Montreal's main mountain and largest greenspace. ==Conservation policy== frame There's a recent trend of blocking off smaller trails "for nature conservation". This is a terribly misguided decision, when you consider the bigger ecological picture. The mountain needs trails of all sizes - not just big paved ones, but small organic ones too, for people to really feel close to nature {{x|also, walking ''only...")
22:52, 23 October 2022 Elie talk contribs created page Nuclear (Created page with "==Fission== Nuclear fission is what's currently used in all of today's nuclear power plants. Fission derives energy from heavy radioactive elements - in particular, uranium. ===Supply=== Uranium is a mineral that occurs naturally as ''a mix of two isotopes'': uranium-238 (99.3%) and uranium-235 (0.7%). The proportion does not vary in nature. Current nuclear reactors can only derive energy from the uranium-235 part. If the whole world was powered ''only'' by...")
04:54, 23 October 2022 Elie talk contribs created page Energy/labor (Created page with "How much labor goes into energy production? {{dp |energy_sector.employees |65 million people |How many people work in the energy sector, globally }} {{dp |typical_work_week |40 hours/week |Assuming this is what the typical energy-sector employee works }} {{dp |energy.tfc |9938 Mtoe/year |Total final consumption of energy (globally) |Key World Energy Statistics 2020 (IEA Report) }} {{calc |energy_sector.employees * typical_work_week / energy.tfc |(person hours/week)...")
23:27, 22 October 2022 Elie talk contribs created page Housing/electricity (Created page with "As always, the most easy-to-find data is based the USA (but still somewhat useful for the rest of the world). This table is copied verbatim from U.S. Energy Information Agency: ===How is electricity used in U.S. homes?=== <table class="basic-table"><caption>U.S. residential sector electricity consumption by major end uses in 20211</caption><tr><th scope="col">End use</th><th scope="col">Billion kilowatthours</th><th scope="col">Share of total </th></tr><tr><...")
15:42, 22 October 2022 Elie talk contribs created page Anarchist peace talks (Created page with "If governments refuse to have peace talks, what if we just do it ourselves? : Example for the Russia-Ukraine war: Schedule some online meetings and bring together anarchists from both Russia and USA (or any other NATO country). The meetings could start with picking apart the narratives of both governments. Then slowly piece together solutions that don't involve war. After the meeting is done, people in each country could go on and share those solutions locally and g...")
16:35, 19 October 2022 Elie talk contribs created page Exercise/mention (Created page with "This subpage is for more stuff that should probably mentioned somewhere: ==Things that mess up your ability to exercise properly== ===Clothes=== Restrictive clothing can mess up your running form or lifting form. * When wearing jeans in general, any proper lifting form would probably rip the crotch. People compensate for this by unconsciously rounding their backs more. * Sweat pants are much better for running & lifting, '''until''' you actually sweat in them. Once the...")
21:52, 16 October 2022 Elie talk contribs created page Housing/Canada (Created page with "Does Canada have enough housing? Let's do a housing supply analysis using census data. ==All of Canada== {{aip}} ==Custom region== Download the 2021 census data for that region. Do the following calculations: ===Supply=== {{aip}} ===Demand=== {{aip}}")
21:47, 16 October 2022 Elie talk contribs created page Calculator (Created page with "This wiki has a built-in calculator. https://olam.wiki/calc Calculations can also be embedded in pages. Tutorial coming soon.")
21:20, 16 October 2022 Elie talk contribs created page Calculator/known bugs (Created page with "When you're editing & previewing a section of a page, if your calculation depends on a datapoint from a previous section, it'll get an "Unknown unit" error. But when you hit 'save page', the error will disappear - the actual page should show the calculation properly. Tip: edit a big enough section of the page that you can test/preview your calculation without this error. When declaring datapoints that depend on other datapoints, the order matters. If you reference a d...")
21:07, 16 October 2022 Elie talk contribs created page Calculator/feature requests (Created page with "Non-logged-in users can also make feature requests in Talk:Calculator. ==Misc== Inline calculations (green sections on pages) need some kinda notice like "click a part of the equation for more details". I dont wanna manually say it every time. The 'from previous calculation' box could really benefit from having the numerical value in it (preferrably in the 'units wanted' of the previous calculation. Is this easy to implement?")
20:20, 16 October 2022 Elie talk contribs created page Housing/footprint (Created page with "How many resources does it take for people to have housing? This is a page for some estimates. ==Single-detached home== ===Labor=== We could estimate labor by looking at ''some'' costs: * labor costs, obviously * material costs, because these generally reflect the labor that goes into producing the materials We ''don't'' want to count ''other'' costs: * zoning permits and other bureaucracy - maybe these exist in our ''current'' society but they don't ''have to'' exist...")
14:01, 7 October 2022 Elie talk contribs created page Nutrition/todo (Created page with "* Add the nutrient targets. Be sure to speak about both the ''recommended daily allowance'' and the ''tolerable upper level''. ** Decision: should it be by gender? and by age? or just some general estimate for the average adult? ** Decision: should the targets go under the ''nutrient targets'' heading, or be incorporated into each subheading of ''nutrients''? A bit of both, perhaps? On one hand, adding numbers too early might overwhelm the reader; on the other hand, havi...")
11:36, 7 October 2022 Elie talk contribs created page Nutrition (Created page with "What makes food ''healthy'' or ''unhealthy''? Hopefully this page can clear up some misunderstandings. ==Nutrients== Healthy eating involves keeping every nutrient within some ''optimal range'' {{x|The range depends on your age, gender, physical activity level, etc. The exact numbers will be available in another part of this page.}} - in other words, "not too much, not too little". But it can be quite tedious to track every nutrient manually, so people typically re...")
09:38, 7 October 2022 Elie talk contribs created page Energy/units (Created page with "=Energy/units= ''Physicists'' measure energy in ''joules'', because a joule is based entirely on metric units {{x|kg * m2 / s2}}. But a joule is a bit too small for the kinds of calculations we do on this wiki. Here are some other energy units for comparison: {|class="wikitable" !Unit !Joules !Note |- |watt second |1 |Electrical ''power'' is often measured in ''watts''. A watt is the same as ''1 joule per second''. |- |calorie (lowercase) |4 |...")
10:44, 28 September 2022 Elie talk contribs created page Plant-based (Created page with "Plant-based food comes from plants rather than animals. ==Reasons== More environmentally friendly, due to * Eating food crops more directly, instead of feeding them to animals and eating the animals, which is inefficient. * Avoiding the methane emissions of cows. Less animal cruelty * Cows, chickens, and pigs suffer in factory farms, where conditions are far worse than the nice farms you see in children's storybooks. Factory farms exi...") Tags: Mobile edit Mobile web edit