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Hobbies & Science : Society & Culture & Entertainment
Methods of Propulsion
Propulsion in the strictest sense means to "drive or push forward" as defined by many dictionaries. All types of vehicles -- whether marine, air, space or ground -- need some type of propulsion to move forward. However, the definition of propulsion alters slightly with each type of vehicle. Each kin
Equinox Lipo Balancer Instructions
Lithium Polymer (LiPo) batteries are very popular in the RC airplane hobby. These batteries are lightweight yet they deliver high voltage and amperage making them perfect for powering electric RC planes. A typical LiPo pack is 2 or 3 cells wired together in series to increase the voltage. LiPo batte
How to Make a Tile Chess Board
Playing chess on a homemade board adds a new dimension to the game. This project requires only a few easily available materials. It can be done in a day, and will continue to provide beautiful entertainment for years to come.
Rock Tumbler Tips
Rock tumblers polish stones and make them presentable for rock collections. According to the AK Mining website, if rock tumblers are used improperly, they can cause the stones to be polished to dust. Improper care may also ruin the machine. Tips on using rock tumblers can keep the stones...
How to Increase the Range & Accuracy of an Airsoft
An airsoft pistol fires a metal pellet (or BB) at its target without the use of gunpowder. You can increase the range and accuracy of an airsoft pistol so that the BBs fired attain speeds greater than 400 feet per second. The spring that powers the piston firing the pellet must be replaced with a mo
Origami Instructions for Paper Airplanes
Origami is the ancient Japanese art of paper folding. Buddhist monks introduced paper to Japan in the late sixth century and paper folding came with it. Paper folding was incorporated into Japanese architecture and ancient religious ceremonies. Origami is a fun, engaging and affordable craft that pa
Quantum Physics & Spiritual Laws
Popular writers have used some of the ideas of quantum mechanics (QM) to explain spiritual and universal law. If you want to see if this is a suitable use of physics, you should examine both QM and spiritual philosophy carefully.
How to Make Wooden Spoke Wagon Wheels
Making a wooden spoke wheel is all about tightness and compressibility of the wood. Different woods contract and expand to varying degrees---this is called compressibility. Ash and hickory both compress well, but ash is gentler on the tools, whereas hickory is so hard that it can dull a saw or blun
Ready to Fly Park Flyers for Beginners
The advent of cheap, powerful electric motors and lightweight batteries has brought about a new class of radio controlled airplanes called park flyers. These planes are small and agile and require very little space to fly compared with larger nitro powered RC planes. Now anyone who lives near a park
How to Find the Density of Wood Chips
Different woods have different densities based on the type of wood used. Since trees have a uniform density, finding the density of a single wood chip will tell you that of your entire sample. Density refers to the amount of something which fills a given space. Scientists find it the mass (weight) o
How to Monitor Bluebird Boxes
Bluebird populations have been threatened by two non-native species: the English [house] sparrow and the European starling. Sparrows aggressively threaten bluebirds, killing adult birds and their young and destroying eggs. The bluebird population, however, has bounced back since the 1970s because pe
How to Get to Odus in "EQ 2"
"Everquest 2" (EQ2), is a massively-multiplayer online role-playing game published and maintained by Sony Online Entertainment. "EQ2" has seen a number of gameplay expansion packs released over the past 5 years, including the "Sentinel's Fate" expansion pack released in 2009. This content pack intro
Doorbell Electromagnetic Hammer Specifications
Doorbells contain solenoids, a type of electromagnet.doorbell image by fafoutis from Fotolia.comDoorbell electromagnetic hammers are constructed using a variation on the basic electromechanical solenoid design. In a solenoid, an electromagnet moves an iron-based metallic core rod to...
Where Is the New Quest in "Hunter's Paradise"?
"Hunter's Paradise" is a town in the massive multiplayer online role playing game "DragonFable." The town is where you find a character named "Karina" who is a representative of "The New Dawn." Every time a new quest is added to the "Hunter's Paradise" area, you can access it by speaking to Karina.
How to Use an ICOM DSP
The Icom Digital Signal Processor (DSP) includes an automatic notch filter function to automatically attenuate beat tones and tuning signals as they are moving. It functions on Single Side Band, FM and AM. There is also a noise reduction function that reduces noise and picks out the signals you want
How to Decorate a Storage Box
Storage boxes are extremely useful for holding odds and ends, but sometimes are not too exciting to look at. Decorating a storage box can help the owner know what's inside without having to write it on the box, or make a nice decoration in the corner of the room if you are lacking closet space to st
How to Calculate a Speed Equation
Determining average speed is probably the easiest calculation you'll ever make in a physics class. That's because unlike velocity, speed has magnitude but not direction. If speed varies with time, the calculation becomes more complicated and requires calculus to solve; even then, however, these are
How to Make a Simple Coin Battery
The power supplied by a battery comes from a chemical reaction between two different metals submerged in an electrolyte. A simple coin battery creates power without using an acid as an electrolyte solution. Making a simple coin battery teaches kids the process of how a battery creates energy.
How to Power a LED
Powering an LED is not as easy as simply hooking it up to a battery. An LED has almost no internal resistance. Therefore, if you hook it up directly to a battery, it will burn out quickly as the current flows unimpeded through the LED. You must add a resistor to the LED circuit. This tutorial explai