Sound travels in waves. Imagine that if you could see sound waves–they might look something like ocean waves. Then, visualize those waves or ripples passing by an object, such as a piling standing in the water. The number of waves that pass by the piling per second would be the frequency. Frequency is usually measured by “hertz,” a unit of measurement which corresponds to one cycle per second. High-frequency sound waves such as ultrasonic waves are measured in thousands of cycles per second, or kilohertz (kHz). Ultrasound starts at the upper limit of human hearing, approximately 20 kHz. Many animals can hear above this range, such as dogs and bats, and some, such as dolphins, communicate using it.
Ultrasonic waves have many incredible applications across a wide variety of industries, ranging from medical science to manufacturing. Not least among these is ultrasonic cleaning, which uses ultrasonic sound waves traveling through liquid to produce cavitation bubbles that clean more thoroughly than solvents and scrubbing alone.
Ultrasonic waves can’t be heard by humans, though some animals, such as bats, can hear them. Their effects on materials and their abilities may look like magic, but they’re pure science. Unlike normal ways of making sound, which often involve striking a surface, ultrasound is made using electrical equipment that vibrates with an extremely high frequency. Crystals of materials such as quartz vibrate very fast when electricity is passed through them—an effect called “piezoelectricity.” As they vibrate, they manipulate the air around them and the fluids they come in contact with, producing ultrasound waves. Devices that produce ultrasound waves using piezoelectricity are known as piezoelectric transducers. [Read more…]
Make a Successful Firm with Innovations
Everyone knows the business mantra encouraging business leaders to “dream big.” But what about small? Is there value in focusing on the small things in business? The answer is yes.
Successful entrepreneurs focus on both the large and the small of business. For example, focusing on small innovations frees you and your employees from feeling like you always have to swing for the fences. Solve immediate concerns and find a better way to do things. Even small innovations can change the world, if enough people adopt them. Focus on the details and don’t overlook small problems which need addressing–your clients will thank you for it! [Read more…]
Whether you’re a private gun owner or a gun shop owner, cleaning firearms is definitely the most arduous part of dealing with them. Yet a clean gun is necessary for accurate and safe shooting. Many experts recommend cleaning guns every time they’re shot and definitely after target practice, when many rounds are shot.
Carbon buildup inside the barrel, for example, can affect the bullet’s velocity and, potentially, its accuracy. Lead build-up in the barrel, smoke fouling in other parts of the gun, plus plastic residue when shooting shotgun shells all can contribute to decreased gun safety and accuracy.
Cleaning a gun the traditional way involves a somewhat tedious, multistep process involving strong chemical solvents and hand scrubbing, which can unintentionally remove gun bluing, exposing the gun to potential rust damage. [Read more…]