This video explains the science behind a trebuchet. The trebuchet is a medieval machine designed to throw objects at or into castles. This video explains that the gravitational potential energy stored in the raised counterweight is converted into kinetic energy in the projectile. Trebuchets make excellent science fair projects.
In this tutorial, we learn how to make an energy ball in Adobe After Effects. First, load a movie of someone pretending to hold an energy ball in their hands. After you do this, you will select a new setting and change the color. From here, you will select a round circle tool and add it where the hand looks like it's holding it. Then, change the effect to make the ball move around with the hand. After this, add the tracker to the hand and position it with the hand. After this, change the cont...
Feng shui helps to create positive energy at your home. It drives away the negative energy from your home. Eventually the people living in that home will get good thoughts. Thoughts make a person good or bad. Thoughts can make you rich or poor. You can change your life by making some simple changes at your home. This space lift can do wonders for you. In the energy map, wealth area is at the far left hand corner of the house. dry flowers bring negative energy and losses to your home. Therefor...
This video shows how you can make your kitchen environmentally friendly. You can save a lot of energy when heating up food by using the microwave
Eric Rochow of Real World Green gives us advice on making our computers more environmentally friendly. This video first explains that screensavers are not green. Screensavers require a computer to use its processor. Ideally, when you're not using your computer it should be in sleep mode and your monitor should be in sleep mode as well. This saves a lot of energy. Also, at the end of the day, turn off your computer and monitor. Don't let them run all night. An interesting fact from the Departm...
If it's all you can do to drag yourself through the day, why not increase your stamina with these time-honored techniques. Watch this video to learn how to boost energy naturally.
Awaken the Kundalini energy within, and increase overall health. Learn how to use seated kundalini energy in this fitness video. Take action: gain flexibility, tone abs, realign spine, and calm nervous system. Cindy Mastry, the instructor of this how-to video, has practiced yoga since the age of eight, and also has a background in Jazz and Ballet. Active in the fitness industry for nearly twenty years, she teaches aerobics, kickboxing, and yoga at many fitness centers in the Tampa Bay area. C...
This form will look like it's been written with AJAX, but the dirty little secret is that it's actually a JQuery script. The reason for doing it this way is greater efficiency in your program, and a little easier to work with.
Longboards are known more for their efficiency of transport and thrilling downhill riding than for tricks. Silly Rabbit, tricks are for shortboards! Or not. This video will show you how to do a cool little longboard trick, a slapdown ollie onto a curb. It's pretty easy, and is a very cool way to arrive somewhere on your longboard.
Apple Macs are easy computers to learn how to use, and these ten tips will make your computer even easier to understand! These are shortcuts to help you bypass routine tasks, and once you master them, your productivity and efficiency will increase.
Having proper insulation in your home is one of the best, and important, ways to save energy in your home. There are many ways to help make sure that you're home is energy efficient. There are ways to help add insulation to the exterior of your walls to help with owning a nice and updated home.
While most paddles are multi-purpose, the Finis freestyler paddles, demonstrated in this how-to video, only work with, well, freestyle. While it's annoying to lug around that much equipment in your swim gear bag, unique equipment forces you to focus on one specific thing at a time. The Finis freestyler paddle is best used for improving freestyle stroke and efficiency. Watch this video swimming tutorial and learn how to train with Finis freestyler hand paddles.
Your posture affects the efficiency of your golf swing. Watch this video tutorial to learn how to fix your posture and improve your golf swing with tips from golf instructor David Leadbetter.
This is a simple video guide that shows you how to install electric underfloor heating cables. 1. Measure the area to order right heater for the room.
Termite poop and biofuels — what's the connection? New research into termites' intestinal comings and goings describes a process that may speed the development and lower the cost of fuels made from plant matter.
An important part of routine auto maintenance is replacing your engine's air filter. This video shows how to remove the old air filter and install a new one on a 2002-2008 Dodge Ram truck. A clean air filter improves your truck's fuel efficiency.
The CV (constant velocity) shafts on your car allow the axel to transfer power to the wheels without an appreciable loss in efficiency. They are widespread in front and all-wheel drive cars. Watch this video to learn how to replace broken ones yourself.
Have all the other tutorials on this site inspired you to create your own? Here's a tutorial on creating a tutorial! CamStudio is a free software program you can use to record a tutorial directly off your computer. This video shows you where to download it, as well as helpful tips on adjusting the settings for maximum efficiency.
In this video, we learn how to improve your yoga with the hara breath. Start by sitting down on your yoga mat and become centered in your body. You will start to breathe in different poses by placing your hands underneath your navel. Close your eyes and envision the center of energy that's in your body. Close your eyes and deep breathe, inhaling and screening energy into your body. Feel your body fueling up with energy and block out all the negative thoughts from your mind. As you do this, fe...
If you are looking to save money and energy, but hate you have to do it during winter, that can be a problem. For some, saving money and energy usually means giving up warm air and having to be cold. But there are ways that you can still do both.
There are many ways that you can lose energy and heat in your home, and one of the most common ways is by the water heater. It may not seem like it, but you can lose a lot of money and energy when using your water heater. So it's important to take the necessary steps when you want to save energy and money. In this tutorial, you'll find out how to install an insulation jacket for your electric or gas water heater. Good luck, be safe, and enjoy!
Thinking about building a rocket stove? A rocket stove is simply made and accepts small-diameter fuel such as twigs or small branches, yielding high combustion efficiency and directing the resultant heat onto a small area. In this video learn how to make a rocket stove with the help of a few friends and items you can find in your own barn!
In this video Dr. Carlson demonstrates the properties of light. Light is like a wave and it is also like a particle, which means that it comes in small packets. To demonstrate how we know that light behaves like packets of energy, he uses LED’s in different colors and a sheet of phosphorescent paper. When light with a high enough energy shines on the paper it will cause the paper to glow.
Interested in chakras? Boost the seven energy centers from the base of your spine to the top of your head for optimum health and vitality. Learn how to awaken chakras with help from this video.
Ian uses round magnets, pencil, clay and glass slide to work his magic science experiment. Magentic levitation is said to be a solution for energy costs of trains because it cuts down friction and creates what is mythically regarded as a perpetual energy motor. This is an interesting toy model of how the maglev trains and large scale generators work
Use everything you know about drawing with perspective and line efficiency to draw a sculpted form. This instructional drawing video demonstrates how to flesh out the map of a drawing into an almost mobile being. When drawing with this technique, line drawing becomes a way of carving a figure out of boxes.
F for FAKE. This video has been labeled a "Faux-To". Commonly contested as bogus science, we believe this video to be a hoax. What's your opinion? Comment below.
Watch this video to learn how to create a beautiful and practical water wall (or water bottle wall) for energy savings at home. it helps to cut down the amount of sunlight that enters your home. You can make a frame that will fit into your window.
This video demonstrates a Reiki session, the passing of Reiki energy into a patient. The video walks you through transmitting your Reiki energy into a person at important parts of the body.
Check out this video from Chemical Reaction Tutorials (CRTutorials). If you love filmmaking, prop making, editing and everything else that goes along with making movies, then you'll want to see what Adam has to say about teleportation.
The key to building a great Minecraft world is efficiency. This video will show you the most efficient way to kill mobs, a four-way mobvator that attracts mobs to spawning pads and elevates them to a killing mechanism so you can capture the loot. This is up to date for Minecraft beta 1.6.
This tutorial is great for anyone who wants some good ideas on how to set up the keybinding for your World of Warcraft character. It's always a good idea to cluster the keybindings around your dominant hand for maximum efficiency.
Looking for another way to increase your app opening efficiency? Here's a little how-to video from lifehacker showing how to use an new little app called Apptivate. You can choose your app and assign whatever how-keys work for you. Check it out.
This tutorial gives a beginning web designer a few useful strategies for improving efficiency and productivity when working with HTML and CSS. Hierarchy is one of these concepts, and the video also covers grouping elements, overriding groups and Document Oject Model.
This tutorial shows you the two basic types of loops in Python - While and For. Be careful that you don't accidentally write an infinite loop, but still be able to use them to increase the efficiency of your programs.
In this brief, official guide from the Chromium team, we learn how to measure the execution time and memory usage of a web app with Google Chrome's built-in developer tools. For all of the details, and to get started profiling the efficiency of web apps for yourself, take a look.
Want to get better results when you run Pro Tools on your PC? This tutorial shows you the easy step of disabling disk compression and indexing, two steps you can use to get the maximum efficiency out of real time applications like Pro Tools.
Caffeine is a crutch that keeps millions of people awake each day when they probably shouldn't be. If you want to stay awake without caffeine, take care of yourself! This video will give you ideas for lifestyle changes that will increase your energy and keep you awake in a healthy way.
The "Send To" shortcut in the right-click context menu in Windows is a great tool for efficiency. But, it's picks the programs and folders for you to choose from when you want to send a file somewhere. You can customize this "Send To" context menu to include whatever you want. This video demonstrates adding Notepad to this feature, and this can be done on either Window Xp or Windows Vista.
Stand-up paddling is sort of a niche spinoff of surfing in which the rider stands up on their board and moves across flat water by paddling. This quick video from an expert in the field offers some tips for improving the efficiency of your stroke when stand-up paddling. You'll be able to paddle faster and longer without tiring. How could that not make stand-up paddling more enjoyable?
