# Conductivity Search Results

### How To: Test the conductivity of metal

This tutorial tests the conductivity of metal. This is a simple science experiments that children will enjoy. They can test many objects in the home. This is play and learning combined.

### How To: Boil water in a paper cup with thermal conductivity

Learn how heat moves through things, like different kinds of metals, such as zinc, aluminum, copper, tin, lead, and iron. This is known as thermal conduction. You can also see how to boil water in a paper cup with the principle of thermal conductivity. This is a great tutorial on how to understand thermal conduction, perfect for all you Mr. Wizard fans...

### Water Music: Conducting with Conductivity

What do you get when you mix water-filled bowls with electrical wiring and human hands? The answer may shock you. Artists Ion Furjanic & Isaac Souweine write, "Electric Tea 1.0 is the first in a series of works that put sound where it doesn't belong. [It] uses porcelain bowls, metal orbs, speaker wire, water, and the conductive power of the human body to create a water based musical controller."

### How To: Use Gummi Bears to demonstrate osmosis and crystallization

Gummi Bears are great for science experiments due to their gelatinous makeup. In this video you will learn how NOT to make a Gummi Bear conduct electricity, but in fact how to use them to demonstrate osmosis and crystallization by preparing them for conductivity.

### How To: Make sulfuric acid - electrochemically

You already know how to make sulfuric acid with the metabisulfite and oxidizer method and you saw how to make copper sulfate from copper and sulfuric acid, so now try making sulfuric acid with these two in mind… with sulfuric acid by electrolysis of copper using an inert anode.

### How To: Make a glass out of a beer bottle

This video tutorial shows how to make a cool beer glass out of a beer bottle. This is also a great trick for cutting the bottle; forget the glass cutter or tricks with string and acetone. Just pour oil up to the level where you want the bottle cut off and place a red-hot piece of metal into it. Because of the great heat conductivity of oil and at the poor heat conductivity of glass, it will expand at the edge of the oil surface, cracking in a nice even line. Watch this instructional video and...

### How To: Avoid RV problems by cleaning your hookup cord

Gary Bunzer the RV Doctor shows how to avoid potential RV problems by cleaning your electrical hookup cord. Before you connect your RV to an electricity supply, make sure to clean and brighten the metal contacts on your shoreline cord. Use fine-grade steel wool to clean all surface corrosion off your cord's prongs. You can also use sandpaper, emery cloth or any other gentle abrasive. After you get the metal prongs clean and shiny, use a dauber or brush to coat the surface of the prongs with a...

### How To: Fix a wet iPod or iPhone

Have you ever dropped your iPhone or iPod in water? Learn how to fix it here. Water can be very damaging to electronics because of its conductivity. You can avoid short circuiting your device by following the directions in this tutorial. Discover why water can hurt your electronics and how to dry out a wet device from the inside out. Find out how to open the device and access the logic board. With materials as simple as a hair dryer and guitar pick, your device can be as good as new!

### How To: Be aware of electricity and matter

In the first video, you'll see how contact between different materials can result in attraction or repulsion. Experimental results are discussed that led to Ben Franklin's one fluid theory of electricity. It explains how clues were found from rubbing different materials together.

### How To: Unlock Your Oven's Secrets to Bake, Broil, & Roast Like a Pro

The oven is arguably our most essential kitchen appliance (right alongside the fridge, freezer, and yes, even the microwave). But even though we've been using them for a few millennia, many of us know so little about our ovens that our cooking or baking can feel like a roll of the dice sometimes.

### How To: Add Shoulder Buttons to Any Phone with a Few Strips of Tape

With ultra competitive games like Fortnite Battle Royale and PUBG taking the mobile world by storm, gamers are looking for ways to get a leg up on the competition. One of the biggest advantages you can give yourself is the ability to aim and shoot while on the move, but that's not exactly easy with a touchscreen.

### How To: A Cold Stone Is Not Needed for This DIY Coldstone Ice Cream

Watching an ice cream pro build you a custom frozen treat mixed with your favorite fruit, candy, and/or toppings makes buying a cone even more exciting. But why go out for ice cream when you can create your favorite combinations in your own kitchen? While you might not have an expensive frozen slab for ice cream topping your kitchen counters, you can mimic the creamy consistency and customizable options from Cold Stone Creamery and Marble Slab any time you're craving it. Best of all, you don'...

### How To: Safely Launch Fireworks Over Wi-Fi with an ESP8266 Board & Arduino

Fireworks are the best part about the Fourth of July and other celebrations, but they can easily cause accidental injuries. It's both safer and more fun to set them off remotely, so we'll hack some standard fireworks with nichrome wire, a relay, and an Arduino to ignite remotely over Wi-Fi using any smartphone or computer.

### How To: Make a light board

Looking for a great idea for a science project? In this video series you'll learn how to build a battery-run light board which can test the electrical conductivity of various objects. You can find these supplies easily at your local hardware store.

### DIY Polygraph Machine: Detect Lies with Tin Foil, Wire and Arduino

Lying is awesome. From a very young age, children learn that flat out denying the truth gets you out of trouble and helps keep you calm in the face of horror. But what happens when you just have to know if someone, say, used your toothbrush? You could ask them to take an expensive and arduous polygraph test.

### News: Make Insulating Glass Conductive with a Blowtorch!

Have a few light bulbs and a blowtorch? Then join the folks over at Harvard in a cool science experiment on the conductivity of glass. As you well know, glass is an insulator with low conductivity and high resistivity. In the video below, they flip the switch, demonstrating how heating the glass fuse enclosure from an incandescent light bulb can create a conductive material that completes the series circuit and lights the second light bulb. In the video, the two light sockets are wired in ser...

### How To: Create a Smart Sprinkler System to Water Your Garden When the Soil Dries Up

Spring has sprung, which means it's time to plant all those delicious vegetables and lucrative cash crops. If you are like me, every year you meticulously plan every aspect of your garden before dutifully neglecting it all summer. I decided enough was enough and built this simple automatic watering system.

Who says nothing productive ever came out of doodling? Certainly not the hacker responsible for this fun (and at least somewhat functional) paper-and-pencil touchpad, which takes advantage of the natural conductivity of graphite: There isn’t much to explain here. It just uses pencil graphite on paper as a kind of two dimensional potentiometer. Four voltage dividers between 5v, 2M ohm resistors, the paper, and my grounded finger feeds signals from each corner into an Arduino. The Arduino does ...

### News: Mining vs Minecraft - Diamonds

Diamond has the highest hardness and thermal conductivity of any bulk material. It's also considered incredibly beautiful and a symbol of live. Here we take a look at how they stack up against their virtual counterparts.

### News: AA battery + staple = fire

Creator Funditor claims right off the bat that this survival tip could save your life. We think that's slightly dramatic, but it shouldn't take away from his video's utility.

### News: Melt a bottle in your microwave

Some may call this a microwave prank. There won't be much left of the microwave...but what the heck...let's call it science.

### How To: Create a PCB Etchant That Automatically Improves After Each Use

Etching your own circuit boards is tons of fun, but etching requires strong chemicals to dissolve the copper plating on blank circuit boards. The normal ferric chloride solution works well, but can be expensive and leaves permanent stains. Luckily, we can whip up our own etchant at home with everyday chemicals! Better yet, our new etchant will turn an eerie green color rather than the dull brown of ferric chloride.

### How To: Make a Programmable Piano in Minecraft

There are many impressive accomplishments in Minecraft, too many to name in fact. Sprawling builds, complex machines, and massive servers are the hallmark of Minecraft and things keep getting bigger and better. No one doubts the epic scale Minecraft has reached, but every once in a while something grand comes along that sets a new benchmark in awesomeness. By far the most recent step in this long line of big ideas was an innovation pushed forward by YouTube user Kimundi2. The premise of this ...

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