Making Noises: How Guitar Strings Produce Sound

Imagine a world full of waves vibrating around you, all of them different sizes, shapes, and colors. Now close your eyes and focus on the sounds that you can hear. You can probably hear something mechanical, like an air conditioner, or your own breathing. Maybe you hear music, children laughing, cars driving past, or sirens in the distance. The world you imagined is around you already; it is the world of sound. Now let’s look at how this world is created.

All sound is made by movement. Rapid movement back and forth causes air to be pushed away. As the object moves back, the air does not fill in the space it was pushed from and a small vacuum is created, making a wave shape. These waves are sound.

If you take a rubber band and stretch it over your fingers, you can test the way that sound changes. Plucking a loose rubber band will produce a lower sound, while a rubber band that has been stretched tight will make a higher sound. Guitar strings work this way. The looser and thicker the string, the slower it can vibrate. These slow vibrations make the low sounds like a bass guitar. A tighter, thinner string cannot move has far as it vibrates. Its vibrations are tight and fast. This makes higher notes. On a guitar, the length of the strings can be changed by the player’s fingers. A shorter string vibrates more quickly than a longer one, causing a higher sound.

Since sound waves are literally caused by compressed air, it is easy for loud noises, the really strong waves, to damage hearing because of the increased pressure. In fact, sound waves can also be called pressure waves.

People who go to concerts might notice a pressurized feeling in their heads if they pay attention. How does the sound get that loud? An electric guitar by itself, not hooked up to speakers, is pretty soft. Now we are talking resonance and amplification.

An acoustic guitar is bulkier, right? It has a hole right under the strings where they are plucked. The air inside the acoustic guitar captures the sound and the wood at the back reflects the waves back stronger. This use of empty space and a sound reflector is called resonance. The sinuses in the human head do the same thing. The empty sinus space and the bones of the skull resonate our voices to make them louder.

The design that is common in most electric guitars is that of a solid body: no extra space. That is why an electric guitar sounds soft all on its own; it has no resonance. That is where the speakers come in to play. The vibrations of the strings on an electric guitar are picked up in the solid body of the guitar and passed electrically to speakers. These speakers mimic the guitar’s sound waves while making the waves bigger and stronger and, therefore, louder. The increase of the strength of a sound wave is called amplification.

Vocal chords vibrate like guitar strings. Clapping hands together creates a single sound wave. Go explore the world of sound!

How Does a Paintball Gun Work, Anyway?

The parts of paintball guns are similar but have some very important differences between them. First, it’s important whether you’re using a pistol, semi-automatic paintball gun and the pump-action gun. All of them work differently but have the same core parts that make them paintball guns. Some can be pump action paint ball guns. The CO2 cartridge will often be loaded into the bottom tube, right below the barrel. In hand paintball guns, your paint balls are loaded into the top tube. The middle tube are where the shots are fired. Pumping the gun will load one round at a time.

The other pump action paintball gun will require a CO2 cartridge or a compressed air cartridge. The people competing have to be responsible enough to carry a paintball tube. That tube is going to be your main source for ammunition. Your paintball rounds go into a holder called a hopper. This item makes it immediately clear that it’s a paintball gun. It’s the most immediate sign to tell people that the weapon isn’t lethal to other competitors.

Hoppers have numbers on them to let people know have many rounds can be held. However, some times this can vary depending on the shape of the rounds that you have. They will drop into the chamber of the gun. Pump action guns are loaded into the barrel itself and then requires to be pumped after every shot. It’s important to see how little recoil that the paintball guns have. Some of that can be explained because they use CO2 cartridges to propel the rounds. The rounds themselves also tend to be lighter and easier to control.

Semi-automatic guns are more convenient than the other choices. There are options for either electric or mechanical paintball guns. They are the most basic paintball gun and almost everyone can have an enjoyable experience with them. Every time you pull the trigger a round will be fired. That is different from the pump action guns that require you to have pump each round. That makes sure that the concept doesn’t require much explanation to everyone. That also means that the semi-automatic gun can hold more rounds than the pump action gun. That makes sure that newcomers are punished as hard for their lack of gun knowledge.

Paintball guns can be enjoyed by people that don’t enjoy real guns. They also have a far less chance of injuring someone who is less experienced with a guns. Chest soreness or literally being hit with recoil due to inexperience is relatively nonexistent when it comes to paintball guns.

Ever Wondered How a Pressure Washer Works? Here’s How.

Pressure washers use an incredibly powerful hose to blast everything clean with a pressurized jet of water. They work amazingly well on barbeque grills, lawn furniture, patios and outdoor grime. The reason they work so well is the molecules use electrical polarity. This enables detergents and soaps to break down grease and gunk so it can be washed away. Pressure washers are also very simple to use. Dust and dirt is blasted away with a jet of cold or hot water. The best part is because a pressure washer uses water it will not damage most hard surfaces.

The Parts

A pressure washer is basically an electric motor that supplies power to a water pump. The washer uses regular water from the faucet. The water is squirted from a trigger gun through a hose at high speed. Different attachments are available for multiple cleaning purposes. A quick review of the best home pressure washers will show that standard models use electricity but the more commercial versions use a small gasoline engine. They produce a much more powerful jet of water.

There are numerous parts inside the pressure washer.

The Water Inlet

This is a hose used to connect the pressure washer to the water supply. The inlet generally has a filter to prevent debris and dirt from entering the pressure washer and causing damage.

The Electric Motor

The standard pressure washers use a standard electrical supply. The larger models use a compact gas engine. This is effective if the area does not have an electrical supply or it is not practical to use a long cable. The water pump is powered by the engine.

The Water Pump

The water pump receives power from the electric motor or gas engine. As the engine pulls the pump the water is sucked in from the faucet. When the water is pushed in the opposite direction it is released by the high pressure jet. Most pumps are designed for a water flow of one or two gallons a minute.

The High Pressure Hose

The hose connects the washer to the cleaning attachment. Several layers of high density plastic and wire mesh are used for reinforcements to enable the hose to handle the high pressure. The standard safety margin is 300 percent. This means a 2000 psi pressure washer can withstand a minimum pressure of 6000 psi.

The Cleaning Attachment

The cleaning attachments vary according to the required use. A basic trigger gun allows water to run through when the handle is squeezed. Driveways are usually cleaned with a rotating brush or spinning wand spray. The force of the water drives the power attachments.

The Additional Features

Additional features are included with some pressure washers. They use ground-fault circuit breakers to offset the combination of electricity and water. These devices are called residual current devices, are part of the power supply and protect from any electrical issues. Most pressure washers work along similar lines but the expensive units usually clean better with higher water pressure.

The Basic Principle

The detergent is in a container or bottle and flows through one of the hoses. Another hose is used for the water from the faucet. The washer is then powered by either a diesel engine or a motor. The water pump mixes the detergent and the water. The water is then heated and released as soapy water through the high pressure hose.

What’s The Chemistry behind Wood Burning?

Any chemical reaction between fuel and oxygen ignites together and becomes fire. For example, wood and gasoline. However, these two products don’t produce flame on its own because both are surrounded by oxygen. To have a good combustion, it needs high levels of fuel to generate heat and makes one set of fire.

Heat

Keep in mind that heat comes from different sorts of things. Wood burning can produce heat from friction, lightning, match, focused light or something that’s been burning. If the wood is heated over 300 degrees Fahrenheit, this starts to decompose heat and those types of materials that are made out of cellulose.

There are some materials released that are made out of volatile gases, and it is called as smoke. The production of smoke is a compound of carbon, hydrogen, and oxygen. Moreover, its other materials are formed into as “char” that is nearly of ash or pure carbon. The wood does also contain materials that can’t be burned such as potassium and calcium. The “char” is known as charcoal which is also made of wood that’s been heated and removed nearly forming into volatile gases thus it leaves behind so much carbon. This is why you see charcoal fire doesn’t produce so much smoke.

Wood burning happens in two different reactions.

 

1. The volatile gases are too hot which is about 500 degrees Fahrenheit. The compound molecules are broken apart, and then the atoms are recombined to the oxygen to form products such as water and carbon dioxide. Meaning to say, it burns.

2. The char do also combine with oxygen but in a much slower type of reaction. This is why most of the charcoal during barbecue time can stay hot for a longer period.

Side effect

 

During a chemical reaction, there is a lot of heat which leads to the production of fire. Many fuels usually burn in just one step. For example, is the use of gasoline. As the heat vaporizes, this is the time that it burns as a volatile gas. Over the time, humans can produce and control fire.

Fire reacting to properties likes the ignitability, flame spread and heat release is the most relevant factor that could ever happen for the wood to perform fire. Charring can influence the characteristics of the property especially if the layers are protected.

Bottom line

To make a good production of wood burning, it needs enough to the higher temperature of heat for the wood to start burning. What it also depends on the way heat is produced. If the thermal properties are too damp or too low, the probability of heat is fifty-fifty. So, ensure that the materials are made of suitable materials to produce heat. This will surely come in handy in days where you might be out camping, and wood burning is all you need to keep you warm and able to cook your food.