- published: 28 Feb 2013
- views: 319365
The density, or more precisely, the volumetric mass density, 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. Mathematically, density is defined as mass divided by volume:
where ρ is the density, m is the mass, and V is the volume. In some cases (for instance, in the United States oil and gas industry), density is loosely defined as its weight per unit volume, although this is scientifically inaccurate – this quantity is more specifically called specific weight.
For a pure substance the density has the same numerical value as its mass concentration. Different materials usually have different densities, and density may be relevant to buoyancy, purity and packaging. Osmium and iridium are the densest known elements at standard conditions for temperature and pressure but certain chemical compounds may be denser.
To simplify comparisons of density across different systems of units, it is sometimes replaced by the dimensionless quantity "relative density" or "specific gravity", i.e. the ratio of the density of the material to that of a standard material, usually water. Thus a relative density less than one means that the substance floats in water.
Just like all matter water has physical properties that can be measured and calculated. To find the mass of water you will need a beaker and a scale. First find the mass of the empty beaker. Next, fill up the beaker to your desired amount. Then use the scale to find the mass of the filled beaker. To find the mass of just the water, subtract the mass of the empty beaker from the full beaker. Our sample is 100 grams. The volume of water can be measured using a graduated cylinder. Our sample is 100ml. Density is calculated by dividing the mass by the volume. Plug in our measured mass at 100 grams and divide that by our measured volume of 100 ml. Water's density is 1 g/ml. Objects with a density greater than 1g/ml will sink when placed in water. Objects with a density less than one wil...
To see all my Chemistry videos, check out http://socratic.org/chemistry We'll practice solving density example problems. We'll look at how to use the density number like a conversion factor, to solve for mass or volume. Watch this video after the density introduction or before the more complicated video on density exercises that has unit conversion.
Which is heavier, a pound of bricks or a pound of feathers? In this video you find out the answer to this age old question. You will also learn how to find the density of objects give the mass and volume of an object.
Topic - Density Why does oil float on water? Hey! Did you realize that a large log of wood floated on water but a comparatively smaller piece of rock sank? How is this even possible? This is possible because of density. It is the measure of the mass of an object per unit volume. In the first case, the log of wood floats on water because it has less density than water. This means that the amount of mass present in unit volume of wood is less than the amount of mass present in unit volume of water. However, in the second case, the piece of rock sinks because it has more density than water. This means that the amount of mass present in unit volume of rock is more than the amount of mass present in unit volume of water. Do you know why the helium filled balloon is rising up in the air? Thi...
The video explains density and some density facts. Learn why diet cola floats and regular cola sinks in water. Also see why hot air balloons stay in the air. Then hear that if you cut an object in half the density stays the same. Next, see where objects come to rest when placed in water. Lastly learn why ice floats.
Welcome to the fifth episode of The Sci guys. In this episode we will be investigating an experiment involving creating a 12 layer density tower by stacking liquids that have different densities. We will show you how you can explore this topic at home with a bunch of simple household items. Help support us to do more experiments by becoming a patron on patreon: http://www.patreon.com/thesciguys Equipment and Ingredients: Large Glass, Small Vase or Graduated Cylinder Honey Corn Syrup Chocolate syrup 100% Maple Syrup Whole Milk Dish Soap Water Vegetable Oil Extra Vigin Olive Oil Rubbing Alcohol Baby Oil Lamp Oil Mixing Bowl Spoon Turkey Baster 2 Colours of Food Colouring Lab Coat or Apron Goggles Previous Epis...
This video describes the definition of density and reviews a couple simple examples of finding density.
016 - Density In this video Paul Andersen explains how density measures the compactness of a material. You can calculate the density of a material by measuring the mass and dividing this by the volume. Water displacement is an effective way to measure the volume of an irregular object. Do you speak another language? Help me translate my videos: http://www.bozemanscience.com/translations/ Music Attribution Title: String Theory Artist: Herman Jolly http://sunsetvalley.bandcamp.com/track/string-theory All of the images are licensed under creative commons and public domain licensing: "File:Artsy Density Column.png." Wikipedia, the Free Encyclopedia. Accessed May 15, 2014. http://en.wikipedia.org/wiki/File:Artsy_density_column.png. intl, Switch. English: Sleek Bowling Ball, Designed by P...
Subscribe to my 2nd channel https://www.youtube.com/user/origami768 follow me on: instagram https://instagram.com/crazyrussianhacker/ facebook - https://www.facebook.com/CrazyRussianHacker CrazyRussianHacker Playlists: Science Experiments - http://bit.ly/1Rnyw2m Life Hacks - http://bit.ly/22HUYIM Survival Ideas - http://bit.ly/1Z2nnEV
Subscribe to my 2nd channel https://www.youtube.com/user/origami768 follow me on: instagram https://instagram.com/crazyrussianhacker/ facebook - https://www.facebook.com/CrazyRussianHacker CrazyRussianHacker Playlists: Science Experiments - http://bit.ly/1Rnyw2m Life Hacks - http://bit.ly/22HUYIM Survival Ideas - http://bit.ly/1Z2nnEV
Understanding pixel density in digital screens is essential for any screen-based designer. What do terms like “1x” and “2x” really mean, and why do they matter? And, most importantly, how can you manage the increasing complexity of designing for devices with a wide range of pixel densities? Medium Article: https://medium.com/@pnowelldesign/pixel-density-demystified-a4db63ba2922 Helpful Resources: http://sketchmaster.com/pixel-density/?sm_s=vmdsc This video was made as part of Sketch Master — online training courses for professionals learning Sketch. www.sketchmaster.com
China’s irresistible process of growth and its precariousness. Animation and Design: Quayola Sound: Ultre Photography and Sound Design: D-Fuse Commissioned by D-Fuse for Undercurrent show 2006
video 01 - various liquid viscosity & density sim time: 100f - 3h 10min 800 000 part mesh time: 100f - 22min video02 - transfer viscosity with object mask sim time: low res 210f - 1h 30min 350 000 part mesh time: 210f - 12min scene files coming soon.... :)
setup is based on gas target force. it makes volume to shape rubber toy. then with density gradient field and volume trails lines were created. my english is not very good) hip https://cloud.mail.ru/public/BEZc/c7h9qxen5
some time ago i was asked to do the old pouring into a glass and have two liquids mix. art direction required both bottle and glass to be in one sim. off course this proved to be tricky . i had to have the glass 80% full and top it off with the stuff pouring out of the bottle. so had to prevent sloshing from the bottle overflowing spillage from the glass etc. but what bugged me the most was the shading. isolating densities or using vertex colour seemed to waste all the interesting internal motion. in an attempt to find a solution, in the second clip i first rendered as partis then projected onto the isolated mesh so i could have particle motion and reflection/refraction. still not hundreds but might be useful in the future.
Binary video synthesis and music by Tristan Perich. 2003. http://www.tristanperich.com
Just like all matter water has physical properties that can be measured and calculated. To find the mass of water you will need a beaker and a scale. First find the mass of the empty beaker. Next, fill up the beaker to your desired amount. Then use the scale to find the mass of the filled beaker. To find the mass of just the water, subtract the mass of the empty beaker from the full beaker. Our sample is 100 grams. The volume of water can be measured using a graduated cylinder. Our sample is 100ml. Density is calculated by dividing the mass by the volume. Plug in our measured mass at 100 grams and divide that by our measured volume of 100 ml. Water's density is 1 g/ml. Objects with a density greater than 1g/ml will sink when placed in water. Objects with a density less than one wil...
To see all my Chemistry videos, check out http://socratic.org/chemistry We'll practice solving density example problems. We'll look at how to use the density number like a conversion factor, to solve for mass or volume. Watch this video after the density introduction or before the more complicated video on density exercises that has unit conversion.
Which is heavier, a pound of bricks or a pound of feathers? In this video you find out the answer to this age old question. You will also learn how to find the density of objects give the mass and volume of an object.
Topic - Density Why does oil float on water? Hey! Did you realize that a large log of wood floated on water but a comparatively smaller piece of rock sank? How is this even possible? This is possible because of density. It is the measure of the mass of an object per unit volume. In the first case, the log of wood floats on water because it has less density than water. This means that the amount of mass present in unit volume of wood is less than the amount of mass present in unit volume of water. However, in the second case, the piece of rock sinks because it has more density than water. This means that the amount of mass present in unit volume of rock is more than the amount of mass present in unit volume of water. Do you know why the helium filled balloon is rising up in the air? Thi...
The video explains density and some density facts. Learn why diet cola floats and regular cola sinks in water. Also see why hot air balloons stay in the air. Then hear that if you cut an object in half the density stays the same. Next, see where objects come to rest when placed in water. Lastly learn why ice floats.
Welcome to the fifth episode of The Sci guys. In this episode we will be investigating an experiment involving creating a 12 layer density tower by stacking liquids that have different densities. We will show you how you can explore this topic at home with a bunch of simple household items. Help support us to do more experiments by becoming a patron on patreon: http://www.patreon.com/thesciguys Equipment and Ingredients: Large Glass, Small Vase or Graduated Cylinder Honey Corn Syrup Chocolate syrup 100% Maple Syrup Whole Milk Dish Soap Water Vegetable Oil Extra Vigin Olive Oil Rubbing Alcohol Baby Oil Lamp Oil Mixing Bowl Spoon Turkey Baster 2 Colours of Food Colouring Lab Coat or Apron Goggles Previous Epis...
This video describes the definition of density and reviews a couple simple examples of finding density.
016 - Density In this video Paul Andersen explains how density measures the compactness of a material. You can calculate the density of a material by measuring the mass and dividing this by the volume. Water displacement is an effective way to measure the volume of an irregular object. Do you speak another language? Help me translate my videos: http://www.bozemanscience.com/translations/ Music Attribution Title: String Theory Artist: Herman Jolly http://sunsetvalley.bandcamp.com/track/string-theory All of the images are licensed under creative commons and public domain licensing: "File:Artsy Density Column.png." Wikipedia, the Free Encyclopedia. Accessed May 15, 2014. http://en.wikipedia.org/wiki/File:Artsy_density_column.png. intl, Switch. English: Sleek Bowling Ball, Designed by P...
Subscribe to my 2nd channel https://www.youtube.com/user/origami768 follow me on: instagram https://instagram.com/crazyrussianhacker/ facebook - https://www.facebook.com/CrazyRussianHacker CrazyRussianHacker Playlists: Science Experiments - http://bit.ly/1Rnyw2m Life Hacks - http://bit.ly/22HUYIM Survival Ideas - http://bit.ly/1Z2nnEV
Subscribe to my 2nd channel https://www.youtube.com/user/origami768 follow me on: instagram https://instagram.com/crazyrussianhacker/ facebook - https://www.facebook.com/CrazyRussianHacker CrazyRussianHacker Playlists: Science Experiments - http://bit.ly/1Rnyw2m Life Hacks - http://bit.ly/22HUYIM Survival Ideas - http://bit.ly/1Z2nnEV
Understanding pixel density in digital screens is essential for any screen-based designer. What do terms like “1x” and “2x” really mean, and why do they matter? And, most importantly, how can you manage the increasing complexity of designing for devices with a wide range of pixel densities? Medium Article: https://medium.com/@pnowelldesign/pixel-density-demystified-a4db63ba2922 Helpful Resources: http://sketchmaster.com/pixel-density/?sm_s=vmdsc This video was made as part of Sketch Master — online training courses for professionals learning Sketch. www.sketchmaster.com
China’s irresistible process of growth and its precariousness. Animation and Design: Quayola Sound: Ultre Photography and Sound Design: D-Fuse Commissioned by D-Fuse for Undercurrent show 2006
video 01 - various liquid viscosity & density sim time: 100f - 3h 10min 800 000 part mesh time: 100f - 22min video02 - transfer viscosity with object mask sim time: low res 210f - 1h 30min 350 000 part mesh time: 210f - 12min scene files coming soon.... :)
setup is based on gas target force. it makes volume to shape rubber toy. then with density gradient field and volume trails lines were created. my english is not very good) hip https://cloud.mail.ru/public/BEZc/c7h9qxen5
some time ago i was asked to do the old pouring into a glass and have two liquids mix. art direction required both bottle and glass to be in one sim. off course this proved to be tricky . i had to have the glass 80% full and top it off with the stuff pouring out of the bottle. so had to prevent sloshing from the bottle overflowing spillage from the glass etc. but what bugged me the most was the shading. isolating densities or using vertex colour seemed to waste all the interesting internal motion. in an attempt to find a solution, in the second clip i first rendered as partis then projected onto the isolated mesh so i could have particle motion and reflection/refraction. still not hundreds but might be useful in the future.
Binary video synthesis and music by Tristan Perich. 2003. http://www.tristanperich.com
Joint Probability Density Function and Marginal Density Function
Joint Probability Density Function and Conditional Density
There is a God and I bow and you will hate me for it!
Duty to humble my soul to a speck of dust and you'll hate me for it!
Ageless understanding of love from the heavens and you'll hate me for it!
Serenities balance is my innermost peace and you will hate for it!
Your world is against the spirits! This is day is against the spirits!
I gladly detach my soul from the lies that sicken this day.
Disregarding the metric wickedness that decays my inner space.
There is something inside myself that can't become this "sickness."
Reminded once more that the quest for the top is coldness!
I will love God of "Zion" with all my heart and you will hate me for it!
Intentions will be so helples and you will hate me for it!
I will love through resurrecting eyes and you will hate me for it!
Self exultation is the opiate of the masses.