Xkcd energy density

54: Science - explain xkc

y-axis: Energy Density Along the x-axis: 0 160.4 GHz [Above the graph to the right is the following formula, with the last inner parentheses only included to make the formula clear, since in the drawing the fractions are written above and below horizontal lines:] I(f) = (2hf 3 /c 2)(1/(e hf/kT-1)) [Below the graph is written the following:] Science What is the energy density of gasoline if it undergoes nuclear fusion? (please sign your comments with ~~~~) This is similar to the iterated logarithm function, right? -- 21:28, 18 January 2015 (UTC

1162: Log Scale - explain xkc

  1. xkcd.com is best viewed with Netscape Navigator 4.0 or below on a Pentium 3±1 emulated in Javascript on an Apple IIGS. at a screen resolution of 1024x1. Please enable your ad blockers, disable high-heat drying, and remove your device. from Airplane Mode and set it to Boat Mode
  2. This comic depicts a sex scene with Cueball in bed together with Megan, and a sentence being spoken by Cueball. The sentence's overt meaning suggests Megan doesn't wish to become pregnant, but Cueball has prematurely or unintentionally ejaculated inside her. The sentence contains five popular (at the time) memes
  3. The hand isn't the fattiest part of the body, but if burned completely, it would probably give off about 500 watt-hours of energy, give or take. That's 50 times the energy content of the phone battery, and almost 10 times that of the Zippo. It's also about as much as a car battery

I waive all copyright to this chart and place it in the public domain, so you are free to reuse it anywhere with no permission necessary The comic shows the gravitational potential (energy transferred per unit mass due to gravity) for the positions of each planet in the solar system — including some moons and Saturn's rings. An object traveling along an upward slope loses energy, while an object traveling along a downward slope gains energy It's the amount of stored energy in a cargo van full of AA batteries or 90 kg of gasoline. Four gigajoules times seven billion people gives us \(2.8 \times 10^{18}\) joules, or 8 petawatt-hours. This is about five percent of the world's annual energy consumption. A lot, but not impossible. But this is just a minimum So, I've always been interesting in the xkcd type of figures only because IT'S FUN.. My goal here is to make density plots of the most common probability functions using the xkcd style A McDonald's Big Mac contains 540 (dietary) calories of energy, or about 2,250,000 joules. The Sun's output is 382,800,000,000,000,000,000,000,000 joules per second. [1] Also known as watts. This is a rare case of a common-in-America unit which is secretly SI-friendly

xkcd: Densit

It's like 10 50 stronger. That means that instead of adding as much binding energy as gravity, it is providing 10 50 times as much energy. What you are saying is, instead of straining gravity providing a bunch of energy, I'm straining field that is 10 50 stronger. It's going to produce a result that is 10 50 stronger First, let's get a few things out of the way: In real life, we can't put a metal pole between the Earth and the Moon.[1]For one, someone at NASA would probably yell at us. The end of the pole near the Moon would be pulled toward the Moon by the Moon's gravity, and the rest of it would be pulled back. In physics, energy density is the amount of energy stored in a given system or region of space per unit volume. It may also be used for energy per unit mass, though a more accurate term for this is specific energy. Often only the useful or extractable energy is measured, which is to say that inaccessible energy is ignored. In cosmological and other general relativistic contexts, however, the energy densities considered are those that correspond to the elements of the stress. An escalator waterwheel could extract significant amounts of energy, but that also means it would cost the escalator owners significant amounts of money. If you force an escalator to exert an.

That should be manifest to even the most committed semanticist. I assert: For all fuels composed of normal matter (not antimatter, neutronium, bose einstein condensates, etc) the correct value for their energy density is precisely 9×10 10 MJ/kg. See here for the proof of this statement Bokeh Menu Menu. About; Gallery; Docs; Github; 0.11.0. 0.10.0; 0.9.3; 0.8.2; Installation; User Guide; Galler Specific energy and energy density are useful measures of the energy that will be released from a given weight or volume of fuel when it is burned. This article provides a quick reference for common values of specific energy and energy density Hydrogen has one of the highest energy density values per mass. Its energy density is between 120 and 142 MJ/kg. This means that for every 1 kg of mass of hydrogen, it has an energy value of 120-142 MJ. It is highly flammable, needing only a small amount of energy to ignite and burn. Hydrogen burns cleanly File:Energy density.svg. Size of this PNG preview of this SVG file: 800 × 500 pixels. Other resolutions: 320 × 200 pixels | 640 × 400 pixels | 1,024 × 640 pixels | 1,280 × 800 pixels | 2,560 × 1,600 pixels | 1,080 × 675 pixels. This is a file from the Wikimedia Commons. Information from its description page there is shown below

Energy density is 0a great method of measuring energy capacity not only for diesel fuel, but alternate fuels as well. By definition, energy density is the amount of energy stored in a given system or region of space per unit volume (MJ/L) or mass (MJ/kg). The energy density for diesel fuel ranges from 32 to 40 megajoules per liter (MJ/L) Why can't we just replace fossil fuels with renewables at the touch of a button? The answer is simple: energy density, or the amount of land it takes to gene..

Av Randall Munroe - Låga priser & snabb leverans https://anaconda.org/malev/xkcd_density/badges/latest_release_date.sv Energy Density Comparison of Size & Weight. The below battery comparison chart illustrates the volumetric and specific energy densities showing smaller sizes and lighter weight cells. Specifications by Battery Chemistry. Specifications Lead Acid NiCd NiMH Li-ion; Cobalt Manganese Phosphate; Specific Energy Density (Wh/kg) 30-50: 45-80 Radiation Energy Density. When the electromagnetic radiation in a region of space is at equilibrium with its surroundings, it can be described by the Planck radiation formula.The total energy radiated from an area in this region of space is given by the Stefan-Boltzmann law and the energy density associated with the radiation can be related to that law

550: Density - explain xkc

  1. Using this design, the team says it's achieved a massive increase in volumetric energy density. Where similar fast-charging commercial technology tends to offer around 5-8 watt-hours per liter.
  2. Energy Density Within Solenoid Energy is stored in the magnetic field inside the solenoid. • Inductance: L = m0n2A' • Magnetic field: B = m0nI • Potential energy: U = 1 2 LI2 = 1 2m0 B2(A') • Volume of solenoid interior: A' • Energy density of magnetic field: uB = U A' = 1 2m0 B2 tsl27
  3. Energy density is a term used to describe the amount of energy stored per unit volume, often expressed in MJ/m 3 or BTU/ft 3. Figure 2 is a graphical representation of common volume ratios for unprocessed material, with the cubes representing the volume of material required for equal energy, 16:4:1 for straw to wood to coal
  4. The energy content of biofuel is a description of the chemical energy contained in a given biofuel, measured per unit mass of that fuel, as specific energy, or per unit of volume of the fuel, as energy density.A biofuel is a fuel, produced from living organisms.Biofuels include bioethanol, an alcohol made by fermentation—often used as a gasoline additive, and biodiesel, which is usually used.
  5. Although the total density is equal to the critical density (exactly, up to measurement error), the dark energy does not lead to contraction of the universe but rather may accelerate its expansion. Therefore, the universe will likely expand forever
  6. ant of energy intake. This is not a new suggestion, but it has gained considerable support recently. Studies aimed at understanding why dietary fat is overconsumed have indicated that the high energy density of fat plays an important role
  7. Photon Energy Density The behavior of a collection of photons depends upon the distribution of energy among the photons:. Since photons are bosons, the distribution function is the Bose-Einstein distribution. where the normalization constant A=1 for photons

Energy content or calorific value is the same as the heat of combustion, and can be calculated from thermodynamical values, or measured in a suitable apparatus:. A known amount of the fuel is burned at constant pressure and under standard conditions (0°C and 1 bar) and the heat released is captured in a known mass of water in a calorimeter. If the initial and final temperatures of the water. Objective: This study examined whether isoenergetic substitution of MCT for LCT in HF, HE diets (639 kJ/100 g) limits the excess energy intakes frequently observed on high-fat diets of high energy density (HF, HE). Subjects: Six healthy male volunteers [mean age (SD) = 27.17 (4.17 y) mean weight = 63.33 (7.33 kg), mean height = 1.72 (0.05 m)] In that case, the energy density gets even better. That puts energy density by weight for one Tesla 18650 P100D cell at 11.9/.0475= 250 watt-hours/kg. And volumetric energy density at 11.9/.0165. The density of the asteroid Ida has been measured to be about 2.7 g/cm 3. So all the dark energy in the solar system would amount to about 2.2 x 10 9 m 3 of the material of Ida, or a sphere of about 800 m radius

Purpose: To assess the diagnostic accuracy of phantomless dual-energy computed tomography (DECT)-based volumetric material decomposition to assess bone mineral density (BMD) of the lumbar spine for the detection of osteoporosis compared to Hounsfield unit (HU) measurements with dual x-ray absorptiometry (DXA) as reference standard. Method: A total of two hundred lumbar vertebrae in 53 patients. A team of researchers at the Massachusetts Institute of Technology and other organizations have found a novel electrolyte that could make it possible for lithium-ion batteries, which now typically can store about 260 watt-hours per kilogram, to store about 420 watt-hours per kilogram.Researchers worldwide are continuing to push limits to achieve ever-greater energy densities — the amount of. energy density batteries, such as those using lithium-ion based electrodes and electrolytes. Staff has identified three key factors to address for high energy density battery safety: (1) battery management systems (BMSs) to monitor and manage charging current, discharging current

Zippo Phone - xkc

Energy density and the cost, weight, and size of onboard energy storage are important characteristics of fuels for transportation. Fuels that require large, heavy, or expensive storage can reduce the space available to convey people and freight, weigh down a vehicle (making it operate less efficiently), or make it too costly to operate, even after taking account of cheaper fuels Topics; Density and gravity for the universe, Open or Closed Universe, Dark Matter, Type Ia Supernovae, Dark Energy and Acceleration of Recession Velocity.. • Energy spectral density measures signal energy distribution across frequency. • Autocorrelation function of an energy signal measures signal self-similarity versus delay: can be used for synchronization. • A signal's autocorrelation and ESD are Fourier transform pairs

Nuclear power: how it works, and how much energy it

List of common conversion factors (Engineering conversion factors) - IOR Energy Pty Ltd. Useful Conversion Factors. 1 Therm = 100,000 Btu. 1 Btu = 1055.6 Joules (J) 1 MJ = 10 6 J. 1 GJ = 10 9 J. 1 TJ = 10 12 J. 1 PJ = 10 15 J Calculus - Resources - chaos eworld facts get bent physics. All-solid-state batteries incorporating a lithium metal anode have the potential to address the energy density issues of conventional lithium-ion batteries. But until now, their use in practical.

xkcd: Heatma

Energy density is defined as the amount of energy per mass. In the International Metric Units (SI), energy density is measured in MJ/kg or MJ/L. Methane is composed of CH 4. The energy density of methane is 50-55.5 MJ/kg. Methane is a natural gas fuel. Today, methane provides approximately 30% of America's energy Dietary energy density was associated with higher waist circumference in women (beta = 1.11 [0.42-1.80]) and men (beta = 1.33 [0.46-2.19]). Dietary energy density was also independently associated with elevated fasting insulin (beta = 0.65 [0.18-1.12]) and the metabolic syndrome (prevalence ratio = 1.10 [95% CI 1.03-1.17]). Conclusions: Dietary. With energy density up to 30% higher than the rest, we provide superior range and power. With EV batteries, the greater the energy density, the longer the range. And the greater the power density, the better the acceleration. Both translate to efficient packs that perform better without taking up too much room

MIT 8.286 The Early Universe, Fall 2013View the complete course: http://ocw.mit.edu/8-286F13Instructor: Alan GuthIn this lecture, the professor first talked. Medium energy density foods = 1.5 to 4 kcal/g High energy density foods = more than 4 kcal/g. It is better to base the diet around foods that are low or very low in energy density, to consume moderate amounts of some medium energy density foods and consume higher energy density foods in small amounts and less often, as demonstrated in the.

Fossil Fuels: Abundant, Chemically Stable, Energy-dense. By Mark Miller -- October 13, 2016. Energy fundamentals explain why oil, gas, and coal brought an end to mankind's renewable energy era. The same fundamentals explain why decreasing the market share of fossil fuels requires so much government intervention at the expense of consumers. This cross-sectional study examined how energy density (ED) in meals and snacks is associated with overall diet quality, BMI and waist circumference (WC). On the basis of the data from 7-d weighed dietary record, all eating occasions were divided into meals or snacks based on time (meals: 06.00-10. This lower energy density is partially compensated by the theoretical thermodynamic potential (i.e., 1.41 V) and thermodynamic efficiency of formic acid electrooxidation, which is very high. That is, the reversible energy efficiency for formic acid is 106% compared to 97% for methanol, as shown in Table 1. Table 1 Energy density projections for market EV cells - VW, 2020. The tease fits in leading up to Tesla's Battery Day, scheduled for Sept. 22 and the same day as the company's annual shareholders.

File history. File usage on Commons. File usage on other wikis. Metadata. Size of this PNG preview of this SVG file: 800 × 500 pixels. Other resolutions: 320 × 200 pixels | 640 × 400 pixels | 1,024 × 640 pixels | 1,280 × 800 pixels | 1,080 × 675 pixels. Original file ‎ (SVG file, nominally 1,080 × 675 pixels, file size: 114 KB) File. Innolith announced that it is developing the world's first rechargeable battery with an energy density of 1,000 Wh/kg (or simply 1 kWh per kg of weight) Energy Density is defined as the total amount of energy in a system per unit volume. For example, the number of calories per gram of food. Foodstuffs that has low energy density provide less energy per gram of food which means that you can eat more of them since there are fewer calories

Physics of a Flat World - xkcd

xkcd: Astrophotograph

Energy density is the amount of energy or calories in a particular weight of food and is generally presented as the number of calories in a gram (kcal/g). Foods with a lower energy density provide fewer calories per gram than foods with a higher energy density. For the same amount of calories, a person can consume a larger portion of The following 18 files are in this category, out of 18 total. Alcubierre energy density.GIF 320 × 240; 152 KB. Energy density DE.svg 864 × 540; 162 KB. Energy density math table.jpg 369 × 193; 11 KB. Energy density-fr.svg 1,080 × 675; 440 KB. Energy Density.PNG 885 × 633; 27 KB

The 'medium energy density' category (1.5 to 4 kcal/g) contains a wide range of foods, some of which can be an important part of a healthy balanced diet such as grilled salmon, lower fat cheese or lean red meat and some higher in fat or sugars that should only be consumed occasionally and in small amounts such as pizza, fried chips, pastries and cakes, and jams High-Energy Density, Room-Temperature Carbonate Fuel Cell Christopher M. Lang,* Ketack Kim,a and Paul A. Kohl**,z Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0100, USA Aroom-temperature carbonate fuel cell has been constructed by modifying anion exchange membranes to transport carbonate. Th

681: Gravity Wells - explain xkc

At the Recent NIO Day event, Nio announced that they would be implementing 150 kWh Solid State Batteries into their NEW ET7 Electric Sedan in Q4 of 2022. In. energy density; News tagged with energy density. Date. 6 hours 12 hours 1 day 3 days all. Rank. Last day 1 week 1 month all. LiveRank. Last day 1 week 1 month all. Popular. Last day 1 week 1 month. Energy density definition is - the amount of energy (as in a beam of radiation) per unit volume One of the most consistently popular posts on this blog has been my XKCDify post, where I followed in the footsteps of others to write a little hack for xkcd-style plotting in matplotlib. In it, I mentioned the Sketch Path Filter pull request that would eventually supersede my ugly little hack.. Well, eventually has finally come. Observe If Rossi and Focardi's cold fusion technology turns out to be real — if the E-Cat really has 10,000 times the energy density and 1,000 times the power density of gasoline — then the world.

Torrefied Wood vs

We examine the evolution of the total energy density rather than individual energy densities during the different epochs. We find that taking into account the contributions from the various constituents leads to a broader range of possibilities evolution histories which enriches the standard picture. This article looks at these possibilities normalize strain energy by unit volume, and when we do so, this is referred to as s train energy density . The area under a stress-strain curve is the energy per unit volume (stress*strain has units of force per area such as N/mm 2, which is the same as energy per unit volume N-mm/mm 3. We will be assuming linear elastic material only Thus, the electrostatic energy density inside a dielectric medium is given by (855) This is a standard result, and is often quoted in textbooks. Nevertheless, it is important to realize that the above formula is only valid in dielectric media in which the electric displacement varies linearly with the electric field

Energy density, Ue = 1/2 Kε 0 E 2, is a figure-of-merit for assessing a dielectric film, which ought to be maximized for high voltage and compact design of capacitor module, where E is the applied electric field, K is the dielectric constant, and ε 0 is the vacuum permittivity (8.85 × 10 −12 F/m) Article Achieving High Energy Density through Increasing the Output Voltage: A Highly Reversible 5.3 V Battery Long Chen,1,5 Xiulin Fan,1,5 Enyuan Hu,2,5 Xiao Ji,1 Ji Chen,1 Singyuk Hou,1 Tao Deng,1 Jing Li,3 Dong Su,3 Xiaoqing Yang,2 and Chunsheng Wang1,4,6,* SUMMARY The energy density of current Li-ion batteries is limited by the low capacity o The energy density and power density should be calculate using the mass of active electrode material only or considering all the mass of current collector,electrolyte and packaging elements Fig. 4.55A shows the effect of laser energy density on the relative density of the SLS sample of carclaxyta. Increase in the laser energy density can raise the temperature of the polymer binder, making its viscosity decreased, and thus, the sintering rate is improved, the wetting, bonding, and filling effects of the binder are enhanced, and the relative density of the green parts is increased On-chip Micro-supercapacitors (MSCs) possess great potentials in miniaturized electronics of tomorrow. In this work, Cu 0.56 Co 2.44 O 4 @MnO 2 core-shell nanoflowers and carbon nanotubes are integrated into a 3D hybrid asymmetric MSC with a fast, convenient, and scalable production fashion. The hybrid MSC exhibits ultrahigh areal capacitance and energy density

xkcd: Experimen

The current state-of-the-art Li-ion batteries (LIBs) have an energy density of less than 300 Wh kg −1 and 750 Wh L −1.A reliable battery system with an energy density higher than 500 Wh kg −1 and 1,000 Wh L −1 has yet to be developed to meet with the long-term demands. Here, we report solid-electrolyte-based liquid Li-S and Li-Se (SELL-S and SELL-Se in short) battery systems, which. Electron Energy Density The behavior of electrons in solids depends upon the distribution of energy among the electrons:. Since electrons are fermions, the distribution function is the Fermi-Dirac distribution. This distribution determines the probability that a given energy state will be occupied, but must be multiplied by the density of states function to weight the probability by the number. Electric vehicles using batteries with Enevate technology can drive 30% further than vehicles with other conventional batteries. The ability to pack more power into a high-density cell is possible via the silicon-dominant anodes at the core of Enevate's XFC-Energy Technology

ABSTRACT. This study examined the effect of energy density, independent of fat content and palatability, on food and energy intakes. With use of a within-subjects design, normal-weight women (n = 18) were provided with meals for 2 d during each of three test sessions Example 10.3: The RL Up: Inductance Previous: Example 10.1: Mutual induction Example 10.2: Energy density of electric and magnetic fields Question: In a certain region of space, the magnetic field has a value of T, and the electric field has a value of .What is the combined energy density of the electric and magnetic fields Energy density is like the miles-per-gallon rating of a power plant. It measures how much energy is released (in megajoules) given a certain mass of fuel (in kilograms). Perhaps the most physically unique thing about nuclear power is that the energy density of nuclear fuel is about 2 million times higher than that of any chemical (like fossil fuel, biofuel, or batteries) This battery system delivers a steady energy density of 208 Wh kg −1 (based on the total weight of active materials) at 1.69 C with a high average output voltage up to 2.31 V, cycled for over 1000 cycles with an average Coulombic efficiency of >98%

Everybody Out - xkc

times more energy-dense than a human alone and over a trillion times more energy-dense than the sun's radiation. Coal, by comparison, has an energy density 50-75% that of oil. Nuclear Energy Density The energy density of nuclear energy can range from very great 1.5 · 1015 J/m3,fo Until now, the highest energy density of a Na-ion battery has been about 520 WH kg-1. The root of this problem can be traced to the inherent characteristics of sodium. The latest video from Engineering Explained tackles one of the biggest problems with electric cars—energy density. Using a gallon jug of water to represent the volume of a gallon of gasoline, Jason Fenske proceeds to lay out 12-ounce beverage cans to show how many current lithium-ion batteries it would take to match the gasoline's energy content by volume Energy density is the amount of energy in a given mass (or volume) and power density is the amount of power in a given mass. The distinction between the two is similar to the difference between Energy and power. Batteries have a higher energy density than capacitors, but a capacitor has a higher power density than a battery.This difference comes from batteries being able to store more energy.

Materials | Free Full-Text | Anti-Ferroelectric Ceramics

Hydrogen has the highest energy per mass of any fuel; however, its low ambient temperature density results in a low energy per unit volume, therefore requiring the development of advanced storage methods that have potential for higher energy density A typical block in Manhattan consumes energy at a rate of over 1,000 kWh per square metre each year, a power density of over 100 W/m 2.This is almost two orders of magnitude greater than the power density of wind power, and obviously you could not plaster Manhattan in wind turbines Petroleum or crude oil has a high energy density, which is approximately 45 MJ/kg. So, the answer to the question in the beginning better be yes, because without petroleum life as we know it would be boring, if not impossible. Karol Shepelsky -- 2002. Related pages in The Physics Factbook: Energy in a barrel of petroleum; Energy density of.

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