Surface Area

Surface Area - YourTeacher.com - Math Help

Order: Reorder
Duration: 1:33
Updated: 16 Jan 2013

For a complete lesson on surface area, go to www.yourteacher.com - 1000+ online math lessons featuring a personal math teacher inside every lesson! In this lesson, students learn that the surface area of a 3-dimensional figure is the sum of the areas of all the faces of the figure. Students are then asked to find the surface area of prisms and pyramids.

http://wn.com/Surface_Area_YourTeachercom_Math_Help

Finding Surface Area - Part 1

Order: Reorder
Duration: 7:09
Updated: 16 Jan 2013

Finding Surface Area Using Integration - The general formulas for finding surface area when rotating a curve about the X-Axis and Y-axis are given. I do one complete problem in this video; in part 2 I do the same problem in slightly different manner!

http://wn.com/Finding_Surface_Area_Part_1

Cylinder Volume and Surface Area

Order: Reorder
Duration: 8:07
Updated: 16 Jan 2013

Learn more: www.khanacademy.org Finding the volume and surface area of a cylinder

http://wn.com/Cylinder_Volume_and_Surface_Area

Lec 26 | MIT 18.02 Multivariable Calculus, Fall 2007

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Duration: 51:05
Updated: 17 Jan 2013

Lecture 26: Spherical coordinates; surface area. View the complete course at: ocw.mit.edu License: Creative Commons BY-NC-SA More information at ocw.mit.edu More courses at ocw.mit.edu

http://wn.com/Lec_26_|_MIT_1802_Multivariable_Calculus,_Fall_2007

Surface Area Song

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Duration: 3:19
Updated: 18 Dec 2012

This is dedicated to my 7th grade students. Surface area is the BOMB! And if I can sing about it, you can sure solve those problems! -Mr. W (This version fixes the old version by putting in images of the net of a triangular prism as well as correcting two errors).

http://wn.com/Surface_Area_Song

Dust Explosion: Surface Area & Reaction Rates

Order: Reorder
Duration: 0:48
Updated: 18 Jan 2013

Part of NCSSM CORE collection: This video demonstrates the influence of surface area on reaction rates. www.dlt.ncssm.edu Please attribute this work as being created by the North Carolina School of Science and Mathematics. This work is licensed under Creative Commons CC-BY http

http://wn.com/Dust_Explosion_Surface_Area_Reaction_Rates

Minecraft - Tutorial: Mob System (Part 1)

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Duration: 26:01
Updated: 18 Jan 2013

This tutorial teaches you how to construct my mob spawning, collecting, transporting, controlling, and killing system. Main advantages of this system are that you: -can hide the spawning grounds completely underground -do not need to stand and wait in a specific spot to make it work -can transport the mobs to whatever location you choose -can use the live mobs for other purposes -can expand the system as you please to spawn more mobs There are, however, better mob system designs if your only intention is to get as many mob drops possible. Dig a 2x2 elevator from your world's surface down 26 blocks. The spawning pads are 14x14 (196 surface area), and follow a 16x16 pattern (14x14 / 16x16 = 76.5% space efficiency).

http://wn.com/Minecraft_Tutorial_Mob_System_Part_1

Surface Area Effect on Rate of Reaction

Order: Reorder
Duration: 0:35
Updated: 18 Jan 2013

Part of NCSSM CORE collection: This video shows relative rate of combustion of steel wool and an iron strip. www.dlt.ncssm.edu Please attribute this work as being created by the North Carolina School of Science and Mathematics. This work is licensed under Creative Commons CC-BY http

http://wn.com/Surface_Area_Effect_on_Rate_of_Reaction

12.2 Surface Area and Nets

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Duration: 13:11
Updated: 18 Jan 2013

http://wn.com/122_Surface_Area_and_Nets

Brew Haus TV, Episode 2: Cheap Plate Chiller

Order: Reorder
Duration: 6:31
Updated: 13 Jan 2013

I recently purchased a very affordable, 30 plate chiller from DudaDiesel.com. A lot of folks consider this product, but then end up buying one of the more common brands (Shirron, Blichmann Therminator). My research found that this very affordable chiller has almost twice the surface area of a Shirron, so I made the plunge. If you are curious about this chiller, or about plate chillers in general, check out this episode. plate chiller shirron blichmann therminator ebay surface area homebrew brew beer chill immersion brewery home diy cheap hose wort water

http://wn.com/Brew_Haus_TV,_Episode_2_Cheap_Plate_Chiller

The Digestive System: CrashCourse Biology #28

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Duration: 11:53
Updated: 18 Jan 2013

Hank takes us through the bowels of the human digestive system and explains why it's all about surface area. Like Crash Course? www.facebook.com Follow Crash Course: www.twitter.com Table of Contents 1) Surface Area to the Max! 3:21 2) Mouth to Esophagus 5:23 3) Stomach 6:38 4) Small Intestine 7:55 5) Large Intestine 9:44 References Campbell Biology, 9th ed. www.sciencedaily.com crash course, biology, anatomy, digestive system, animal, development, digestive tract, nervous system, vertebrate, micro-ecology, microorganism, human, omnivore, acid, enzyme, surface area, mouth, teeth, saliva, nutrient, intestine, salivary amylase, swallow, mastication, pharynx, esophagus, stomach, epiglottis, bolus, peristalsis, rugae, gastric juice, pepsin, chyme, duodenum, absorb, secrete, villi, gall bladder, liver, bile, emulsify, fatty acid, cecum, appendix, poop, anal, sphincter

http://wn.com/The_Digestive_System_CrashCourse_Biology_28

Corn Flour Fireball

Order: Reorder
Duration: 3:06
Updated: 18 Jan 2013

Corn flour blown through a funnel produces an excellent fireball. This both looks cool and demonstrates some interesting science. In any chemical reaction, the reactants must mix with each other significantly in order to increase the rate of reaction. Here we demonstrate that corn flour on a spoon burns slowly, but blown from a funnel, the reaction is dramatic and violent. This is because the surface area where the reaction can occur is greatly increased. HD Slinky Slow-mo bit.ly How to make solid nitrogen bit.ly Levitating BBQ bit.ly Electric Flame bit.ly As always, if you are planning to recreate this experiment, make sure you have appropriate supervision and take necessary precautions.

http://wn.com/Corn_Flour_Fireball

r surface area and volume

Order: Reorder
Duration: 1:05
Updated: 18 Jan 2013

cat face

http://wn.com/r_surface_area_and_volume

Lec 31 | MIT 18.01 Single Variable Calculus, Fall 2007

Order: Reorder
Duration: 45:25
Updated: 13 Jan 2013

Lecture 31: Parametric equations, arclength, surface area Instructor: David Jerison View the complete course at: ocw.mit.edu License: Creative Commons BY-NC-SA More information at ocw.mit.edu More courses at ocw.mit.edu

http://wn.com/Lec_31_|_MIT_1801_Single_Variable_Calculus,_Fall_2007

The William

Order: Reorder
Duration: 2:21
Updated: 15 Jan 2013

The William is an innovative stove top concept that utilizes the full surface area potential for cooking. It also ditches knobs and dials for touch screen control. This video explains how it would work. Patent Pending. NOTE: Items placed on the surface of The William will not automatically heat up. They are automatically recognized, but only when the user is ready to cook and activates the surface by tapping the control panel. Then, when a signature is recognized, the user has to manually raise the temperature in order for the signature to receive any heat.

http://wn.com/The_William

Fly Cycle Guide

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Duration: 3:10
Updated: 18 Jan 2013

Annotations complete. So how does flying work? Well we need lift! Wings are actually aerofoil shaped- concave at the bottom side, so they have a bigger surface area on the top side than the bottom. As air flows over the wings, they have more area to travel if they go above so the pressure exerted is divided over a larger area, decreasing the air pressure. Low pressure sucks higher pressure into it and high pressure is drawn to low pressure so they equalize- The low pressure is sucking the wing upwards while High pressure is pushing it upwards also. If these forces can overcome the weight of the creature, they rise eh. But theres more! Air needs to be flowing over the wings for Lift to be generated, so we need some forward momentum- Thrust! Planes and such will use Propellers, jet engines, rockets etc to propel themselves forward, birds and such just flap their wings, which means that their wings can change shape as they flap. This is why the upward motion is faster, the downward motion should last longer to take full advantage of the aerofoil shape. Gliding however is achieved by using the Aerofoil wing mechanism to slow down falling enough to allow horizontal movement. To be clear, gliding does not generate lift, soaring does, usually by thermals and such. Helicoptors and Hot air balloons are irrelevent to this guide! As for Jets being able to fly upside down? They're freaking Jets! Screw physics! =p But i'd say their jet engine probably gives them an edge. Who says ...

http://wn.com/Fly_Cycle_Guide

Minecraft - Tutorial: Mob System (Part 3)

Order: Reorder
Duration: 21:16
Updated: 15 Jan 2013

In this part of the tutorial we consider some various methods for improving the efficiency of our mob system. The main way we do this is by decreasing the probability that mobs will spawn in other areas outside of our spawning pads. Lighting up the surface area with torches improves efficiency at night by preventing hostile mobs from spawning on the surface. Lighting up tunnels and cave systems is also very important for decreasing the amount of surface area hostile mobs can spawn on. Most important is that we light up any tunnels in the area of our spawning pads within 32 blocks from the surface. It is also very important that we light up all tunnels directly below our spawning pads. By decreasing the unwanted surface area where hostile mobs may spawn, and increasing the surface area of our spawning grounds, we increase the probability of making the mobs spawn where we want them to. If you are wondering about the numbers I talk about, these graphs explain it better than I ever could: www.minecraftforum.net #1: No mobs will spawn within a 24 block radius sphere (48 diameter, 1810 surface area) all around your player. #2: No mobs will despawn within a 32 block radius sphere (64 diameter, 3217 surface area) all around your player. #3: Mobs within a 128 block radius sphere (256 diameter, 51472 surface area), but outside the 32 block radius sphere will randomly despawn after a certain time. This amount of time I estimate to be roughly 1 minute to 1.5 minutes on average. It ...

http://wn.com/Minecraft_Tutorial_Mob_System_Part_3

Overfishing and more: SEA THE TRUTH -- In 2048 The Oceans Will Be Empty! (16:9, full-length, HiQ)

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Duration: 60:15
Updated: 16 Jan 2013

www.SeaTheTruth.nl or www.GlobeTransformer.org (NOTE for the YouTube-Team we have uploaded this movie with the permission of the Nicolaas G. Pierson Foundation) BACKGROUND Sea the Truth is based on numerous scientific publications that examine the problems of seas and oceans. Below follows an overview of the themes addressed in the film and a brief explanation. DEEP TROUBLE: WHALE MORTALITY CAUSED BY OVERFISHING According to a report of the New Zealand news channel 3News sea mammals, among which whales, are dying of malnutrition. The makers claim that this is caused by overfishing. Watch the report here: www.3news.co.nz FISHING POLICY AND QUOTA Fishing policy around the world is destructive. Recommendations from scientists on quotas are ignored by policy makers, wealthy countries plunder the fishing territories of poor countries and bottom trawlers sow destruction all over the seafloor with their dragnets. In Europe, 88% of fish stocks have been overharvested, such as the blue fin tuna which sadly is threatened with extinction. EFFECTS OF FISHING ON MARINE ECOSYSTEMS In addition to the effect on the fish stocks, fishing also affects all other organisms in the same habitat or ecosystem. Whether the fish being harvested are predatory or prey, the balance of the ecosystem is disrupted and this can have serious consequences. The degree of disruption strongly depends on the fishing method employed. BYCATCH The term bycatch has come to be used to refer to fish caught ...

http://wn.com/Overfishing_and_more_SEA_THE_TRUTH_-_In_2048_The_Oceans_Will_Be_Empty!_169,_full-length,_HiQ

Twenty-Year History of Lattice-Enabled Nuclear Reactions (LENR) - Hiding in Plain Sight

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Duration: 63:18
Updated: 16 Jan 2013

At the University of Missouri, on May 29, 2009, scientists from the US Navy's Space and Naval Warfare Systems Command (SPAWAR) lectured on twenty years of verified research involving anomalous heat and mini-explosions on deuterated metals, reported by various governmental and international research laboratories. They conclude that these energetic observations are of nuclear origin and sow the seeds of a true green energy source. The Slides: bit.ly The lecture summary: Twenty-Year History of Lattice-Enabled Nuclear Reactions Using Pd/D Co-deposition FE Gordon, S. Szpak, PA Mosier-Boss, Melvin Miles, and LPG Forsley In the Pd/D co-deposition process, working and counter electrodes are immersed in a solution of palladium chloride and lithium chloride in deuterated water. Palladium is then electrochemically reduced onto the surface of the working electrode in the presence of evolving deuterium gas. Electrodes prepared by Pd/D co-deposition exhibit highly expanded surfaces consisting of small spherical nodules. Because of this high surface area and electroplating in the presence of deuterium gas, the incubation time to achieve high D/Pd loadings necessary to initiate LENR is orders of magnitude less than required for bulk electrodes. Using a Dewar-type electrochemical cell/calorimeter, it was shown that the rates of excess enthalpy generation using electrodes prepared by the Pd/D co-deposition technique were higher than that obtained when Pd bulk electrodes were used.1 ...

http://wn.com/Twenty-Year_History_of_Lattice-Enabled_Nuclear_Reactions_LENR_Hiding_in_Plain_Sight

Secrets of Archimedes

Order: Reorder
Duration: 52:41
Updated: 18 Jan 2013

Archimedes of Syracuse (Greek: Ἀρχιμήδης; c. 287 BC -- c. 212 BC) was a Greek mathematician, physicist, engineer, inventor, and astronomer. Although few details of his life are known, he is regarded as one of the leading scientists in classical antiquity. Among his advances in physics are the foundations of hydrostatics, statics and an explanation of the principle of the lever. He is credited with designing innovative machines, including siege engines and the screw pump that bears his name. Modern experiments have tested claims that Archimedes designed machines capable of lifting attacking ships out of the water and setting ships on fire using an array of mirrors. Archimedes is generally considered to be the greatest mathematician of antiquity and one of the greatest of all time. He used the method of exhaustion to calculate the area under the arc of a parabola with the summation of an infinite series, and gave a remarkably accurate approximation of pi. He also defined the spiral bearing his name, formulae for the volumes of surfaces of revolution and an ingenious system for expressing very large numbers. Archimedes died during the Siege of Syracuse when he was killed by a Roman soldier despite orders that he should not be harmed. Cicero describes visiting the tomb of Archimedes, which was surmounted by a sphere inscribed within a cylinder. Archimedes had proven that the sphere has two thirds of the volume and surface area of the cylinder (including the bases of the ...

http://wn.com/Secrets_of_Archimedes

BURN STEEL WOOL

Order: Reorder
Duration: 1:56
Updated: 18 Jan 2013

We demonstrate the simple combustive oxidation of iron by burning a common household item: Steel wool. Normally we do not think of iron as being flammable, this is because bulk iron doesn't self-sustain its burning like most flammable materials. But the strands of steel wool are thin enough with enough surface area that heat produced is self-sustaining and will continue to burn through if there is enough air present. To do this, simply pull apart and fluff up the steel wool to separate the strands. Then simply set it on fire. The steel wool should then burn flamelessly creating iron oxide. You can also use a 9-volt battery and short out the terminals across the steel wool, the resistive heating should be hot enough to start it lit.

http://wn.com/BURN_STEEL_WOOL

AFQTP - GRADER - LEVEL MATERIALS AND MAINTAIN UNPAVED SURFACES

Order: Reorder
Duration: 21:06
Updated: 25 Dec 2012

AFQTP - GRADER - LEVEL MATERIALS AND MAINTAIN UNPAVED SURFACES - Department of Defense 2000 - PIN 613956 - WHETHER LEVELING AN AREA FOR OPEN STORAGE, COVERING A PARKING AREA WITH STONE, OR MAINTAINING AN UNPAVED PERIMETER ROAD, THE GRADER PUTS THE FINISHING TOUCH TO ANY PROJECT. PROGRAM COVERS STEPS FOR LEVELING MATERIAL THAT HAS BEEN DUMPED IN AN AREA TO BE FILLED. ALSO ADDRESSES THE STEPS FOR MAINTAINING AN UNPAVED SURFACE, SUCH AS AN OUTLYING ROAD.

http://wn.com/AFQTP_GRADER_LEVEL_MATERIALS_AND_MAINTAIN_UNPAVED_SURFACES

22. Emergence and Complexity

Order: Reorder
Duration: 102:30
Updated: 18 Jan 2013

(May 21, 2010) Professor Robert Sapolsky gives a lecture on emergence and complexity. He details how a small difference at one place in nature can have a huge effect on a system as time goes on. He calls this idea fractal magnification and applies it to many different systems that exist throughout nature. Stanford University: www.stanford.edu Stanford Department of Biology: biology.stanford.edu Stanford University Channel on YouTube: www.youtube.com

http://wn.com/22_Emergence_and_Complexity

Shape	Equation	Variables
Cube	Failed to parse (Missing texvc executable; please see math/README to configure.): 6s^2 \,	s = side length
Rectangular prism	Failed to parse (Missing texvc executable; please see math/README to configure.): 2(\ell w + \ell h + wh) \,	ℓ = length, w = width, h = height
All Prisms	Failed to parse (Missing texvc executable; please see math/README to configure.): 2B + Ph \,	B = the area of one base, P = the perimeter of one base, h = height
Sphere	Failed to parse (Missing texvc executable; please see math/README to configure.): 4\pi r^2 \,	r = radius of sphere
Spherical lune	Failed to parse (Missing texvc executable; please see math/README to configure.): 2r^2\theta \,	r = radius of sphere, θ = dihedral angle
Closed cylinder	Failed to parse (Missing texvc executable; please see math/README to configure.): 2\pi r(h+r) \,	r = radius of the circular base, h = height of the cylinder
Lateral surface area of a cone	Failed to parse (Missing texvc executable; please see math/README to configure.): \pi r \left(\sqrt{r^2+h^2}\right) = \pi rs \,	Failed to parse (Missing texvc executable; please see math/README to configure.): s = \sqrt{r^2+h^2} s = slant height of the cone, r = radius of the circular base, h = height of the cone
Full surface area of a cone	Failed to parse (Missing texvc executable; please see math/README to configure.): \pi r \left(r + \sqrt{r^2+h^2}\right) = \pi r(r + s) \,	s = slant height of the cone, r = radius of the circular base, h = height of the cone
Pyramid	Failed to parse (Missing texvc executable; please see math/README to configure.): B + \frac{PL}{2}	B = area of base, P = perimeter of base, L = slant height

Branches of Mathematics

Pure mathematics

Applied mathematics

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Contents

Definition of surface area [link]

Common formulas [link]

Ratio of surface areas of a sphere and cylinder of the same Radius and Volume [link]

In chemistry [link]

In biology [link]

References [link]

External links [link]

http://wn.com/Surface_area

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http://es.wn.com/Área de superficies

http://pl.wn.com/Pole powierzchni