Communications Electrical Chemical Search Results

How To: Make nitric acid

Watch this science video tutorial from Nurd Rage on how to make nitric acid. They show three ways to make nitric acid based on two different chemical approaches, both of which can be done using easily accessible materials.

How To: Make a miniature medieval flail

In this video, we learn how to make a miniature medieval flail. You will need: glue, string, scissors, drill, paper, cardboard, paints, masking tape, electrical tape, plastic chain (optional), a brush, and a wooden handle. First, crumple up a couple sheets of paper to make it into a ball. Wrap masking tape around it so it keeps its shape. Next, wrap your string or twine around the ball several times at various angles, tying it each time at the bottom. After this, tape it again with masking ta...

How To: Choose and place a fire extinguisher

Bob and Leslie of the Washington Township Fire Department demonstrate how to choose the right fire extinguisher for your home. Fire extinguishers come in a large range of sizes so be sure to choose one that you can easily handle. If it’s too heavy you won’t be able to use it properly. Fire extinguishers are labeled according to the type of fire they are used on. A is for ordinary combustibles such as wood or paper; B is for flammable liquids such as gas, grease or oil; and C is for electrical...

How To: Make a pinhole camera

In the age of digital cameras and instant gratification, make the simplest camera ever invented using just a light proof box, a hole, and paper. Check out this Howcast video tutorial on how to make a pinhole camera.

How To: Remove the alternator from a Saturn S-Series car

One day, your car may break down and you won't be able to afford to hire a mechanic, so what do you do... you look on the web for some how-to vehicle repair videos and become your own car mechanic, that's what. You don't need any advanced training to perform repairs and simple maintenance on your automobile, but you may need a few tools. Invest in the basic tools and you'll be prepared for just about any car malfunction you can think of. These tutorials will help get you on your way, as long ...

How To: Set dry ice on fire

Kent Chemistry offers up some of the most exciting chemistry and general science experiments from their lab. Here Mr. Kent illustrates the process of creating fire with dry ice. How does freezing and flame mix? Watch now to see the amazing chemical reaction!

How To: Easily install a ceiling fan

A ceiling fan is a cheap, economical way to add some nice air into your home during the hot summer months. They're easy to install and can actually save some money. So in these videos, you'll find out how to easily install a ceiling fan in your home today. Remember, you will be messing with electrical wires so be safe and wear the right equipment. Good luck and enjoy!

How To: Take apart a Nitro RC engine

Starting with the cooling head you are going to have many different screws that could require a screw or a hex. After the screws are removed you can easily lift the cooling head from the engine. The plate underneath should pop right off along with the sleeve and the shim. Make sure you keep the sleeve and shim together. The starter will off once the screws are removed for it as well repeat the process for the backplate. Rotate the piston and this will allow you to pop the sleeve off. To remov...

How To: Make a mini cupcake polymer cake mold

Use the tread on wire-nut, to create a mold for mini clay cupcakes. Usually used for joining together electrical wires, the repeated lines of the wire-nut will here be used to form the ridges expected on a cupcake bottom. Press the wire-nut into a small piece of clay to form a depression just as big as you want your finished cupcake to be. Bake in the oven to solidify into a mold. Dab the dried mold with a bit of cornstarch or baby powder; this will prevent fresh clay from sticking to it too ...

How To: Set up a generator for a home or business

This video details how to set up a generator to provide back-up power for a home or business. Generators are the ideal emergency power solution for a home or business, generators can automatically transfer the power load from the utility power line to the generator when an outage occurs. To make sure the generator is always ready, generators can self run weekly and perform self diagnostics so maintenance issues are minimized or eliminated. When planning to use a portable generator, it should ...

How To: Replace a GFI outlet & how it works

GFI stands for Ground Fault Interrupter and is used in areas that have water. The first thing you should do before replacing anything electrical is shut off the power in the area you are working. When you remove the old outlet, you will notice a series of wires going into the bottom of the outlet and a series of wires coming out of the top. What is happening here is that the power is coming in from the bottom and then going out through the top. The reason for this is if something trips the fa...

How To: Use a Hydroponic Seed Starter to produce seedlings

Learn how to make and use a hydroponic seed starter to produce seedlings with this video tutorial. This is a very easy setup to make. Start with a basic metal shelving unit. Hang florescent lights above each of the shelves on the shelving unit. Make sure the lights are balanced for day time. Put a plastic container on each shelf that is about the size of the shelf and tall enough for the rim to sit just below the florescent light tubes. You will need some pecks tubing and some plastic clamps....

How To: Baby proof your home

Worried about your baby or toddler either wrecking or wrecking themselves in your home? Baby proofing time! Make sure your house is safe and secure for your child when they start exploring their turf.

How To: Remove the front oxygen sensor in a Saturn S-Series

One day, your car may break down and you won't be able to afford to hire a mechanic, so what do you do... you look on the web for some how-to vehicle repair videos and become your own car mechanic, that's what. You don't need any advanced training to perform repairs and simple maintenance on your automobile, but you may need a few tools. Invest in the basic tools and you'll be prepared for just about any car malfunction you can think of. These tutorials will help get you on your way, as long ...

How To: Treat a nosebleed

Nosebleed or the official term is epistaxis is bleeding from the nasal cavity. Nose bleeds are very common and are often caused by dry air, illness, or trauma. Learn more about the causes, symptoms and treatments of nose bleeds in this medical how-to video.

Lightning on Demand: Building the World's Largest Tesla Coils

Electrical engineer Greg Leyh and company are currently creating a pair of 118-foot Tesla coils! The largest coil built to date is an 18-story tower constructed back in 1903 by Tesla himself, but Leyh has decided to not only recreate the huge coil, but double it in size. The project goes by the name of "Lightning on Demand" and is currently being constructed on an 81-acre plot in the Nevada desert. Once it's finished, the pair of coils will output 10 million volt acres 100 yards long—the size...

News: Scientists Grow World's First DIY Eyeball

DIY is a far-reaching term—though culturally it tends to refer to hacks, mods, crafts and constructions, its meaning can also extend to the ongoing trials and tribulations of the evolution of mankind: astonishing developments in technology, desperate acts of self-preservation or as in today's topic, discoveries in science that truly move the needle.

How To: Get Rid of All that Space Junk

How about a laser? One that is strong enough to nudge debris out of earth orbit. That's what NASA contractor James Mason wants to do, and his lab simulations suggest that the idea is possible. Mason wants to use a 5kW ground-based laser and a ground-based 1.5 meter telescope to spot potentially hazardous space waste and shove it off, by about 200 meters per day of lasering. It's kind-of like air traffic control for near earth orbit.