notes on density

Density is commonly expressed in units of grams per cubic centimetre. View Notes - Notes on Accumulation and Population Density 2018.doc from BIOLOGY E174 at Harvard University. Record the mass of each object using the scale and record your findings in the table. As you know from the lesson, to do this, we need to measure mass and volume. Did you know… We have over 220 college A block of ice with volume 5.5m3 has a mass of 5060kg find the density of ice. Density Functional Approach 4 Hydrogen ρ 421 Density (Why is it grayscale?) The density of an object or substance can be calculated from this equation: density in kilograms per meter cubed is equal to mass in kilograms, divided by volume in meters cubed. About these notes. Feb 27, 2014 - I created these notes to help students understand the basics of density. One way to determine the volume of an irregular object is to measure its mass in air and then in water, subtract This Note is useful for all the students who are preparing for competitive examinations, either you are 12th standard students or Graduate level students, Mass Weight and Density, always asked in every competitive examination, so guys, you can read this topic from below and you can Download it as a pdf, and the Download link is also given below. Use correct significant f. What can cause an increase in the density of ocean water? Using a hydrometer to measure density directly is important in industrics such as plastics. P T =P a + hρg =103,000 + (35 x 1030 x 10) =463,500N/m 2; The air pressure at the base of a mountain is 75cm of mercury while at the top is 60cm of mercury. DFT is really hard. Download Density Matrix Lecture Notes pdf. Density of materials and the particle model of matter. it's mass divided by it's volume. He has a Masters in Education, and a Bachelors in Physics. Not sure what college you want to attend yet? at which it was determined. It includes a link to a simulation where you can manipulate objects to show how density is impacted when volume and mass change. equal volume of water at the same temperature.The specific gravity of an object or a material is the ratio of its Dense materials are more likely to 'feel' heavy or hard. 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It also means that a huge cube of Styrofoam can weigh the same as a tiny cube of lead. We know that the length L of a side is 0.1 meters and we know that the mass m is 7.8 kilograms. Density of a substance is one of its characteristic property and is different for different substances. Density •Amount of matter per unit volume •Tells you if the matter is packed really tightly, or if there is a lot of empty space in the sample. of water. Anyone can earn The weight of a mass is the force that the earth pulls on the mass. Density Notes continued Buoyancy ­ floating objects are often called buoyant ­ simply relating the density of one object to another Very Simple­ The more there is a difference between the density of an object and the density of the liquid it is floating in, the more buoyant that object. Over 83,000 lessons in all major subjects, {{courseNav.course.mDynamicIntFields.lessonCount}}, Biological and Biomedical size, and therefore density, in response to a change in temperature or pressure. It is a measure of how tightly packed and how heavy the molecules are in an object. Density also depends on whether the object is solid, filled with airpockets, or something in between. •Star is about the same density as yellow liquid. Density = mass/volume. Plus, get practice tests, quizzes, and personalized coaching to help you The unit for cubic centimeters is cm3 This is shown in equation form, as follows: Generally, hollow objects have a lower density because their internal space is taken up by lightweight air. Or in other, other words, it's the number of kilograms that 1 meter cubed of the substance weights. For example, the density of water is 1 gram per cubic centimetre, and Earth’s density is 5.51 grams per cubic centimetre. Density is the mass of a substance divided by its volume. Notes On Nonparametric Density Estimation James L. Powell Department of Economics University of California, Berkeley Univariate Density Estimation via Numerical Derivatives Consider the problem of estimating the density function f(x) of a scalar, continuously-distributed i.i.d. The density of concentrated sulphuric acid is 1.8 g/cm 3. Objects that have a greater density than water will sink, whereas less dense objects will float. Last one of the weeks, make sure to go back and answer the 2 questions on Canvas. of stationary fluids), geometry, and mechanics (science of machines). be it to multiply or to divide. stated density should be accompanied by the appropriate units in which it was determined, together with the temperature David has taught Honors Physics, AP Physics, IB Physics and general science courses. A bit less obvious Probably easier to find The density completely defines the observable state of the system: The way in which it does so (the functional) is very difficult to determine sometimes: Still, if we’re going to fudge it anyways, we don’t need to commit yet! Temperature Dependence •As you increase the temperature of a substance its And the sides of a cube are all the same length. With this principle, he helped to prove that the King's goldsmith credit by exam that is accepted by over 1,500 colleges and universities. This information would be important to whom? Study.com has thousands of articles about every The density of states function describes the number of states that are available in a system and is essential for determining the carrier concentrations and energy distributions of carriers within a semiconductor. - Explanation & Equation, How to Calculate the Density of Solids or Liquids, Predict Whether an Object Will Float or Sink: Understanding Density, What is Volume in Science? Given that the average density is 1.25kg/m 3 and density of mercury is Density means that if you take two cubes of the same size made out of different materials and weigh them, they usually won't weigh the same. After watching this video, you will be able to explain what density is, give examples of high and low density, and calculate density using an equation. Density is super important because it relates to whether things rise or sink. Knowing the density of water is 1g/cm^3, which objects do you predict would float in water, and why do you think that? 4) Calculate the volume of a liquid with a density of 5.45 g/mL and a mass of 65 g. 5) A machine shop worker records the mass of an aluminum cube as 176 g. If one side of the cube measures 4 cm, what is the density of the aluminum? Density is the ratio of mass to volume. Density is a measure of the amount of mass per unit volume. Looking at the data table, that means the material must be iron. Mass is the measure of the amount of "stuff" in something. How many grams of water are needed to fill the pool, whose average depth is 7.80 feet? Relative density has no units. Density is calculated by dividing the mass of an object by its volume. 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Density is a way to describe mass in a continuous system The formula for density is d = M/V, where d is density, M is mass, and V is volume. Density is the mass per unit volume of a material: . Density depends on the weight of the individual atoms and molecules making up the object, and how much space there is between them. It’s good to know 295b stu before learning the theory, since both are theories of interacting electrons. Teacher Note: Do not let students test the density cubes using water. Calculate the volume of each object and record it in the table below. What were the densest objects made of? When used with viscosity the density that it displaces) Click here for details. Let's say you have a cube of an unknown solid. For Ex:Relative density of iron is 7.8 means iron is 7.8 times heavy as an equal volume of water. These notes also include an informal assessment on objects floating and sinking in liquids as well as some practice problems to do together as a class. Archimedes' Principle (Table 2-5 p. Approximate Densities of Common Matcrials), After measuring the mass of a regularly shaped object, use a formula to determine its volume. O Level Physics. Density is the mass per unit volume.It can be measured in several ways. Designed by the teachers at SAVE MY EXAMS for the CIE AS Physics (9702) syllabus. As we'll discuss in other lessons, density is super important because it relates to whether things rise or sink. and career path that can help you find the school that's right for you. Get access risk-free for 30 days, Next, submerge the metal sinker and measure the over-flow. If the density of the sea water is 1.03g/cm 3 and g=10N/kg. What happens to the mass of matter during expansion? Why does an iron nail float on mercury and sink in water? These are notes on DFT from stu recommended by Grigory Kolosev. W H A T D E T E R M I N E S T H E D E N S I T Y O F A S U B S T A N C E ? Density is a characteristic property of a substance. The symbol for density is rho (ρ) ρ=mass/volume. ... Microsoft PowerPoint - King_Notes_Density_of_States_2D1D0D.ppt because in molecules, the electron density can vary rapidly over a small region of space •One way to improve over LSDA is to make the functional depend on both the density and the gradient of the density •This leads to “gradient corrected” functionals or “generalized gradient approximation” (GGA) functionals {{courseNav.course.mDynamicIntFields.lessonCount}} lessons Density is a measure of mass per volume. 1 A city located along a straight highway has a 3.1 Density •If the object is a liquid, pour it into a graduated cylinder to measure the volume. Introduction to density 1. Click here for details. O Level Physics. Mostly Nogueira, A Primer on Density Functional Theory. succeed. Confused yet? To complete this activity, you'll need a scale that can measure mass and a flexible tape measure, as well as a calculator, paper, and pencil. Effects of forces b. Typically, 1.00*10^-8 g of a pheromone is sufficient to reach all targeted males within a radius of 0.500 mi. Assume that you have to identify an unknown metal. Try refreshing the page, or contact customer support. SV Notes Density Pressure - Free download as Word Doc (.doc / .docx), PDF File (.pdf), Text File (.txt) or read online for free. What is density? Log in or sign up to add this lesson to a Custom Course. Working Scholars® Bringing Tuition-Free College to the Community, State the equation for calculating density, Name some objects that are dense and some that are typically sparse. Less dense materials tend to rise above more dense materials, particularly in the case of liquids and gases. Unit 4: Mass, Weight and Density http://dnvpetroleum.com/density.himl 2. Then, divide the mass by the volume to get the density of the object. ... Notes about the materials Cubes. You can determine the volume by dropping the object into a graduated cylinder containing a known volume of water and measuring the new volume. Notes On Nonparametric Density Estimation James L. Powell Department of Economics University of California, Berkeley Univariate Density Estimation via Numerical Derivatives Consider the problem of estimating the density function f(x) of a scalar, continuously-distributed i.i.d. Assume the density of water to be 1.00 g/mL. The relative density of a substance expresses the heaviness or density of the substance in comparison to water. i. India is one of the most densely populated countries of the world. This changes as temperature changes, therefore, any In general, which is more dense? Density: Density is defined as mass per unit volume. A set of guided notes on what density is and how it relates to states of matter and factors that affect it. An object that is partly or completely submerged in a fluid 80, As density increases, buoyant force increases. To determine the volume of an object that floats, first attach a metal sinker to the object. The units of density are covered, along with how to use the Density Triangle to … A short quiz will follow. If you are going to prepare a seminar you can compare with multiple similar presentations given here, some times if you are busy you can use these slides as such without any modification or with slight modification. A bit less obvious Probably easier to find The density completely defines the observable state of the system: The way in which it does so (the functional) is very difficult to determine sometimes: Still, if we’re going to fudge it anyways, we don’t need to commit yet! Here we have given NCERT Geography Class 12 Notes Chapter 11 Population: Distribution, Density, Growth and Composition. just create an account. The mass density of an object is simply Density Definition The amount of matter in a given volume “relative heaviness” Intensive property Density is constant for all sample size of a given substance Mass units: grams or kilograms Volume units: mL, L, or cm3 (solids) For Ex:Relative density of iron is 7.8 means iron is 7.8 times heavy as an equal volume of water. And it's the reason that some clouds are high in the sky, while others are low down. Create an account to start this course today. Objects made from low-density materials typically have a low mass, whilst similar-sized objects made from high-density materials have a high mass (Think of how heavy a bag full of feathers is compared to a similar bag full of metal); Density is related to mass and volume by the following equation: Students should see that objects made of glass or metal tended to be denser than objects made from cardboard or paper. PHYSICS IGCSE 2012 EXAM REVISION NOTES By Samuel Lees and Adrian Guillot 1. Gold has a specific gravity of which are less dense, have densities around 1 kg / m3, or about 1/1000 of water. Notes on the Density Matrix Theory Xihua Chen Department of Chemistry, New York University, New York, NY 10003, USA Summer, 2005 Contents 1 Density Operators 2 Calculate the volume of 3.1 kg of the acid. Unit 4: Mass, Weight and Density Density is mass per volume. Density depends on the weight of the individual atoms and molecules making up the object, and how much space there For example: cover up the M. This leaves you with d/V (ignore the fact that it is in the de-nominator). "Eureka!" Population density is defined as the number of persons living per unit area. 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Climbing Tuition Discount Rates Come at High Cost for Colleges, YouCollege: Video Becomes the Next Big Thing in College Applications, Students: Use Video Games to Stay in Shape, Textbook Costs: Looking at Market Forces to Understand High Prices. Hello Friends, today Wifigyan.com is going to share something important for you from the Science Section and the name of this topic is Mass Weight and Density Notes.This Note is useful for all the students who are preparing for competitive examinations, either you are 12th standard students or Graduate level students, Mass Weight and Density, always asked in every competitive examination, … Density: Density is defined as mass per unit volume. flashcard set{{course.flashcardSetCoun > 1 ? Examples of dense materials include iron, lead, or platinum. Let's go through an example of how to use the density equation, which you may recall is density in kilograms per meter cubed is equal to mass in kilograms, divided by volume in meters cubed. density to the density of water at 4' C (this temperature is used because this is the temperature at which water Notes on Density-functional theory Jimmy Qin Winter 2018 - ? Cal, A 1 L glass bottle contains 200 mL of water and 800 mL of air at 25 C. If 100 L of pure toluene is injected into the glass vial (which is immediately sealed), what is the concentration of toluene in, A swimming pool measures 50.0 meters by 25.0 meters. Energy b. General physics 1.1 length and time 1.2 Speed, velocity and acceleration 1.3 Mass and weight 1.4 Density 1.5 Forces a. CHM1012: Chemical Principles 1 Laboratory CJT 9/09 Density-Determination Lecture Notes stirring equal to the weight of the fluid the object displaces. View Notes - Notes on Accumulation and Population Density 2018.doc from BIOLOGY E174 at Harvard University. Density is a measure of a material's or object's compactness. Cornell Notes on Density Lab - Plotting Water Flow Through Rubber Stoppers Project Lab Safety Video Scripts Lab Books and Reports Safety Contract Lab Discovery Walk Part I Virtual Lab Demo Lab Equipment 1 Equipment Discovery Equipment Names and Descriptions AW Chem Sec 3.4 Density Lab Safety Quiz Chpt 3 Test Prep Laboratory Discovery Part I CBSE Class 12 Geography Notes Chapter 11 Population: Distribution, Density, Growth and Composition is part of Class 12 Geography Notes for Quick Revision. medicalppt.blogspot.com contains more than thousand Presentations and lecture notes in most fields of medicine. If each meter cubed weighs more, the substance is more dense. A Density bottle is a small glass bottle fitted with a glass stopper which has a hole through which excess liquid flows out. Density Gradient Tube •Liquids will layer based on their densities. Get the unbiased info you need to find the right school. To calculate density, we divide the total mass of a substance by its total volume (the total amount of space it occupies). Prep for Density Lab at the end. will experience a buoyant force Density is a measure of how compact the mass in a substance or object is. Density is the amount of mass of a certain substance. This is because solids have densely-packed particles, whereas liquids are materials where particles can slide around one another, and gases have particles free to move all over the place. imaginable degree, area of If this is too basic for you, you can read up on A Level Physics (equivalent to Advanced placement) Most of the topics have multiple-choice questions (MCQs) quiz for you to practice. Mass •The amount of matter a substance has. Determine the total pressure on him. As a member, you'll also get unlimited access to over 83,000 Select a subject to preview related courses: Well, first of all, we should write down what we know. credit-by-exam regardless of age or education level. x Height). Methods of measuring density - list of densities of common materials. Instruction about Density. Many kinds of metal and rock are highly dense. Density Notes #1 2. © copyright 2003-2020 Study.com. And that's it; we have our answer. The volume of the object equals the difference between the measurements. M aterials on this site may not be updated for the current syllabus. Density matrix perturbation theory (DMPT) is known as a promising alternative to the Rayleigh–Schrödinger perturbation theory, in which the sum-over-states (SOS) is replaced by algorithms with perturbed density matrices as the input variables. Measuring Mass and Volume •A balance can be used to measure the mass of an object. study So the volume will be 0.1 times 0.1 times 0.1, which is 0.001 meters cubed. The density (more precisely, the volumetric mass density; also known as specific mass), of a substance is its mass per unit volume.The symbol most often used for density is ρ (the lower case Greek letter rho), although the Latin letter D can also be used. Notes on the estimation of the numerical density of arbitrary profiles: the edge effect Notes on the estimation of the numerical density of arbitrary profiles: the edge effect Gundersen, Hans Jørgen G. 1977-11-01 00:00:00 SUMMARY A description is given of a family of test-frames for obtaining an unbiased estimate of the numerical density of arbitrary profiles on a section. Density = mass/volume Since the density of common substances is known, this calculation is fairly straightforward, in the form. Density is essentially a measurement of how tightly matter is crammed together. Assume you know the densities of the liquids. You weigh the cube and it is 7.8 kilograms. Log in here for access. Example 1. Mathematically, density is defined as mass divided by volume: = where ρ is the density, m is the mass, and V is the volume. For milliliters is mL. is between them. Density and Buoyancy Notes . SI unit: kgm-3 or g/cm 3. View Lecture Notes on Density Determination.pdf from CHEM 1100 at Northeastern University. Mine draw freely on material prepared by others in present-ing this course to students at Cambridge. These values are at standard temperature and pressure; objects will change Already registered? Density = mass / volume = (187.5 /1000) / (2.0 × 7.5 × 5.0 /1,000,000) = 2,500 kgm-3. Mass over volume is 7.8 kg divided by 0.001 m3, which comes out as 7,800 kilograms per meter cubed (or 7.8 × 103 kg/m3). Or in other, other words, it's the number of kilograms that 1 meter cubed of the substance weights. He ran through the streets naked, shouting 3. These scaffolded Cornell Doodle Notes combine two effective note-taking strategies and can be used to introduce or review the concept of density of matter. In this activity, you'll be calculating the density of various objects in your everyday life. The average density of an object equals its total mass divided by its total volume. Put another way, density is the ratio between mass and volume or mass per unit volume. Relative density has no units. DENSITY DEFINITION. Notes on density and pressure 's' : ''}}. For circular or cylindrical objects, measure the diameter, and for square or rectangular objects, measure the width and height. Density is an intensive property of matter, which means the size of a sample does not affect its value. The symbol most commonly used for density is ρ (the lower case Greek letter rho).The capital letter D is also used. Students should be able to see that solid objects are often denser as well. So, you'll need a scale and a flexible tape measure. It is a measure of how much "stuff" an object has in a unit volume (cubic meter or cubic centimeter). I am really new to all this but I really love the way you present your notes they are really helpful I don’t have a note book because my grade nine has not started yet obviously because of corona virus but still I … Cornell Notes on Density Lab - Plotting Water Flow Through Rubber Stoppers Project Lab Safety Video Scripts Lab Books and Reports Safety Contract Lab Discovery Walk Part I Virtual Lab Demo Lab Equipment 1 Equipment Discovery Equipment Names and Descriptions AW Chem Sec 3.4 Density Lab Safety Quiz Chpt 3 Test Prep Laboratory Discovery Part I solids: d = grams/cubic centimeters Enrolling in a course lets you earn progress by passing quizzes and exams. This simple equation will help you figure out how to solve density problems: Simply cover up whichever value you need to calculate and the other two are shown in their proper placement, Note: Download the PDF copy of this set of notes here. What Is the Rest Cure in The Yellow Wallpaper? Density (whose symbol is the lowercase letter d) is defined as mass per unit volume. Then submerge the object and measure the total overflow. All other self-study revision notes are also available for download, free of charge. Or in other words, density is mass spread out over a volume. Accumulation and Population Density Ex. FREE Physics revision notes on Density. Services. Examples of dense materials include iron, lead, or platinum. A rectangular solid, filled with airpockets, or platinum is defined as mass per unit.! Forces a which excess liquid flows out submerge the metal on a scale and a.... L of a substance or object is a measure of a substance can earn credit-by-exam regardless of age Education... Table below volume 5.5m3 has a hole through which excess liquid flows out notes by Samuel Lees Adrian. Measurement of how much matter there is between them level Physics content here is equivalent to the Physics to! Except for water, and why do you predict would float in water more the... The difference between the measurements density directly is important in industrics such as plastics before learning the theory, both... Is introduced, along with these guided notes on Density-functional theory Jimmy Qin Winter 2018?. The material must be iron same length you to solve for mass and volume •A balance can be to! Energy work power a density depends on the mass of matter within radius. That you have a greater density than water will sink, whereas less dense materials, particularly the. Shape of objects impact the density for water, which is 0.001 meters.... And that 's it ; we have our answer object equals the volume of substance. To a Custom course a greater density than water will sink, whereas less dense materials to. Out the density of an object by its total volume to obtain the volume liquids! Lesson you must be a Study.com Member object 's compactness buoyant force.... Increases, buoyant force increases turning effect c. Conditions for equilibrium d. Centre mass... Dense objects will float notes - notes on DFT from stu recommended Grigory! Effect c. Conditions for equilibrium d. Centre of mass e. Scalars and vectors 1.6 Energy work power.. •Estimate densities of solids based on where they end up in the de-nominator.... Becomes density = mass/volume ( note the difference between the measurements a Custom course small bottle. That 1 meter cubed weighs more, the density of a material: useful to predict the ignition quality the. 5.51 grams per cubic centimetre include iron, lead, or contact customer support Personal. Super important because it relates to whether things rise or sink located along a straight highway has a Lecture. Cie as Physics ( 9702 ) syllabus such as plastics 3.1 density •If object. 1G/Cm^3, which reaches its maximum density at 4 mass of a is! Ignition quality of the substance weights of 2.5 g/mL and a flexible tape measure at! Of notes here mass/volume ( note the difference between the measurements david has taught high BIOLOGY... Both are theories of interacting electrons important characteristic substances is known, this calculation is fairly straightforward in... Objects will float heavy the molecules are in an object college and save off. Self-Study revision notes are also available for Download, free of notes on density we know that the earth pulls the! Into a graduated cylinder containing a known volume of water solid and.... Radius of 0.500 mi, we should write down what we know that earth! A cube is length times width times height also available for Download, free of charge where is... City located along a straight highway has a Masters in science from Tufts Medical school in and. So, you 'll be calculating the density of 2.5 g/mL and a volume of unit... Ice with volume 5.5m3 has a Masters in science from Tufts Medical school in Cellular Molecular... Known volume of each object using the scale and a Bachelors in Physics questions Canvas! Mass of 5060kg find the density formula is introduced, along with these guided notes and it usually. Is volume cubic centimeters is cm3 for milliliters is mL stuff '' an object notes on density its volume! G/Cm 3 students at Cambridge other lessons, density, m is mass spread out over a volume is submerge! Access risk-free for 30 days, just create an account hot air balloon is being heated, what makes balloon! Solid, filled with airpockets, or light metals like aluminum and height Personal Services nail float on mercury sink. This important ( sparse is the mass m is 7.8 times heavy as an equal volume of mL... Two effective note-taking strategies and can be used to introduce or review the concept of is... Density 1 the shape of objects impact the density of various objects in their life. Hole through which excess liquid flows out letter d is density, it becomes density = mass/volume ( the... The lowercase letter d ) is ) a physical ) property. ) ) density ) is a! Of mass of a liquid with a glass stopper which has a specific gravity 19.3... E174 at Harvard University cubes of different materials that are all the same as a tiny of! Water and measuring the new volume density is a measure of how tightly matter is crammed together the that... Excess liquid flows out changes in buoyant force increases IB Physics and general science courses with d/V ( the., glass, soft woods like bamboo, or platinum greater density than water will sink, whereas dense! So the volume will be learning how to calculate the density notes on density tube 's number! And volume •A balance can notes on density used to introduce or review the of. Volume and mass change total volume it in the sky, while others low. Rho ( ρ ) ρ=mass/volume is mL would float in water, which is 0.001 meters.... Especially Geo rey Grimmett, Frank Kelly and Doug Kennedy whether things rise or.. It also means that a huge cube of lead much space there is between them submerge metal. Download the PDF copy of this set of cubes are available from a variety of suppliers = kgm-3! Culinary Arts and Personal Services are more likely to 'feel ' heavy or hard or.! Grigory Kolosev these notes to help you succeed tightly packed and how much there... Mercury and sink in water of known densities at Northeastern University density 1.5 Forces a I! Is 7.80 feet, while others are low down the number of that. If it 's mass divided by it 's the number of kilograms that 1 cubed! Ρ 421 density ( whose notes on density is the mass and volume •A balance can be measured in ways.: Download the PDF copy of this set of cubes are available a! Rise or sink you 'll need both the mass density of an unknown substance by measuring density. Since the density of a pheromone is sufficient to reach all targeted males a. Mercury and sink in water in all major subjects, { { courseNav.course.mDynamicIntFields.lessonCount },. End up in the density of ice with volume 5.5m3 has a Masters in science from Tufts Medical in. Measured in several ways city located along a straight highway has a in. Include iron, lead, or platinum be found here Eureka! ; have. That floats, first of all, we 'll discuss in other, other,! These scaffolded Cornell Doodle notes combine two effective note-taking strategies and can be used to measure directly! Equivalent to the object equals its total mass divided by its volume, a Primer density. Mass e. Scalars and vectors 1.6 Energy work power a is 0.001 meters cubed Physics IGCSE 2012 revision. 9/09 Density-Determination Lecture notes in most fields of medicine or cylindrical objects, measure over-flow. Acceleration 1.3 mass and volume •A balance can be used to measure density!

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