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Google Forms - create and analyze surveys, for free.

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(Substitute Day)

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These days, you can find animated figures all across the Internet! There are a number of technologies that web designers use to create animation, including:

In this article, we'll give you an introduction to how all of these technologies work, along with their advantages and disadvantages. We'll also take a look at the newest innovations that will further expand Web animation!

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These days, you can find animated figures all across the Internet! There are a number of technologies that web designers use to create animation, including: In this article, we'll give you an introduction to how all of these technologies work, along with their advantages and disadvantages.

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In the Netherlands, cell phone owners can download an application called Layar that uses the phone's camera and GPS capabilities to gather information about the surrounding area. Layar then shows information about restaurants or other sites in the area, overlaying this information on the phone's screen. You can even point the phone at a building, and Layar will tell you if any companies in that building are hiring, or it might be able to find photos of the building on Flickr or to locate its history on Wikipedia [source: Ensha]

Layar isn't the only application of its type. In October 2018, an organization called Mural Arts Philadelphia created a gigantic interactive outdoors mural. Viewers pointed their smartphones at parts of the mural and then viewed various holograms and listened to matching music for a fully immersive art experience. And in a science-fiction dream come true, fans of the movies can now play "Star Wars" Holochess right on their phones, complete with futuristic graphics and sound [sources: Dickinson, Matney].

Health care professionals may soon rely on smartphone-enabled AR. A company called Tissue Analytics is honing an app that helps doctors and nurses use their phones to quickly identify specific types of wounds for faster diagnosis and more efficient care [source: Comstock].

An app that's simply called Augment will project just about any new product into a real-world environment. Whether it's a new recliner or a lamp, potential buyers can "see" the product in their own homes and read all information and reviews before making a purchase. AR Compass Map 3D is like a mapping app on steroids. It combines compass and map overlays with your camera to create a fully-immersive 3D map that guides you wherever you want to go [source: NewGenApps].

Similarly, a company called Total Immersion makes a wide variety of applications for business and fun. Want to know what those new glasses frames will look like perched on your face before you buy them online? Use the app to slide those frames onto your virtual face and you'll instantly know that horned rims really are not your style [source: Total Immersion].

Then there are apps like the previously mentioned Pokemon Go, a game that was insanely popular in 2016, and allowed players to hunt on their smartphone or tablet virtual creatures scattered in public spaces.

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In the Netherlands, cell phone owners can download an application called Layar that uses the phone's camera and GPS capabilities to gather information about the surrounding area. Layar then shows information about restaurants or other sites in the area, overlaying this information on the phone's screen.

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Dirtmeister: Simple Machines -- Investigate the Facts

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It's important to know that when you use a simple machine, you're actually doing the same amount of work - it just seems easier. A simple machine reduces the amount of effort needed to move something, but you wind up moving it a greater distance to accomplish the same amount of work.

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Enchanted Learning Simple Machines (Page 2 - Top)

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Enchanted Learning Simple Machines (Page 2 - Top)

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levers lever simple machine physics forces mechanics

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A FIXED PULLEY *A MOVABLE PULLEY and *A COMBINED PULLEY A single pulley changes the direction of the lifting force. For example, if you are lifting a heavy object with a single pulley anchored to the ceiling, you can pull down on the rope to lift the object instead of pushing up.

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Mechanical Advantage

What's the heaviest thing you can lift? Do you think you could lift a whole car? Or a grizzly bear? Probably not by yourself - but if you had a mechanical advantage, you could! A mechanical advantage is the amount of help you can get from using a machine to do something instead of just doing it with purely your own strength.

Ways to Get Mechanical Advantage

You can use different kinds of machines to get a mechanical advantage. Let's explore some of these types of machines.

Levers

A lever is one type of machine that gives you a mechanical advantage. A seesaw is an example of a lever. The part that holds the seesaw off the ground is called the fulcrum. Using the lever and fulcrum, you can lift things that would otherwise be too heavy.

For example, say you're on a seesaw with your mom. Your mom is probably heavier than you are and you probably can't just pick her up by yourself. But you can still lift your mom on the seesaw if your mom scoots up and sits really close to the fulcrum while you sit on the normal seat. By putting your mom closer to the fulcrum, you're giving yourself a mechanical advantage. You can lift her even though she's heavier. Try it for yourself and see!

Gears and Sprockets

You can also get a mechanical advantage by using gears. You can connect bigger gears and smaller gears in different ways to either get more power or to get more speed. You can also use sprockets, which are like gears, but instead of being connected directly to other sprockets, they're connected using belts or chains.

Think of a bicycle. There are two sprockets on a bike, one connected to the pedals and one connected to the back wheel. When you ride a bike, you move the pedals in a circle, which turns the pedal sprocket. The pedal sprocket is attached to the wheel sprocket by a chain. When you turn the pedal sprocket, the wheel sprocket turns too, and the bike moves. You can bike faster than you can run because the sprockets give you a mechanical advantage.

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what is mechanical advantage? - lesson for kids | study.com

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What is Mechanical Advantage? - Lesson for Kids | Study.com

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What's the heaviest thing you can lift? Do you think you could lift a whole car? Or a grizzly bear? Probably not by yourself - but if you had a mechanical advantage, you could! A mechanical advantage is the amount of help you can get from using a machine to do something instead of just doing it with purely your own strength.

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Simple Machine Quiz (when you're all done)

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Simple Machine Quiz (when you're all done)

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Quia - Science SOL 4.2 Simple & Compound Machines