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Technology

The practical application of knowledge, especially in a particular area, is called technology. Advances in technology affect every area of our lives. This category is for questions about technology and includes everything from how to remove a scratch from a CD to applications of electronics to what polyester is made from and more.

35,090 Questions

What allows scientist to look at individual atoms?

Scientists can look at individual atoms using powerful tools such as scanning tunneling microscopes or atomic force microscopes. These instruments use a fine probe to scan the surface of a material at the atomic level, providing detailed images of individual atoms.

What absorbs infra red?

Materials that are good absorbers of infrared radiation include dark-colored objects, carbon-based materials, and certain metals such as iron and steel. These materials efficiently convert infrared radiation into heat energy.

Why is the periodic table such a useful tool?

By grouping the elements according to atomic structure, the Periodic Table indicates which elements are likely to have similar properties, or similar reactions with other elements and compounds. The three subdivisions of the Table are :

  • Groups : The vertical columns include elements with similar chemical properties e.g. alkali metals.
  • Periods : The horizontal rows include elements with the same number of electron shells (energy levels).
  • Blocks : Adjacent groups of elements where the same subshell contains the last electron.

What are the advantages of thermoplastics?

Thermoplastics are lightweight, flexible, and have good impact resistance. They can be easily molded and reshaped when exposed to heat, making them versatile for various applications. Additionally, thermoplastics are recyclable and environmentally friendly.

When water condenses what does it change from and to?

When water condenses, it changes from a gas (water vapor) to a liquid (water droplets). This process occurs when the temperature of the water vapor decreases, causing the molecules to come together and form liquid droplets.

What frequency does fat absorb?

The peak frequency is very wide-band, somewhere between 2 - 3.5 megahertz. Ultrasonic waves are readily absorbed by fat at that frequency and if tuned to peak will not damage other soft tissue around the fat, but... if improperly tube, soft tissue that is vital to the body CAN be damaged at that frequency. Liposuction procedures usually use 25 - 100 kilohertz, either from the inside of the body during liposuction, or from the outside with or without liposuction. Since those frequencies are not in the peak bandwidth, the ultrasonics merely accelerates the fat and both builds heat and cavitates it, thus damaging fat cells which are damaged even before skin and soft flesh is, which causes the cell to both leak its fatty acids and deflate, as well as to be disposed of by the body through the same mechanisms fat is burned by exercise, BUT... once damaged, are no longer susceptible to gaining weight again, thus weight loss with THOSE damaged cells, is permanent. .

What happens when a conductor is placed in a constant electric field?

When a conductor is placed in a constant electric field, the free charges within the conductor will rearrange themselves until reaching equilibrium. This results in the charges accumulating on the surface of the conductor, creating an induced electric field that cancels out the external field within the conductor. The conductor will then remain in a stable state as long as the external electric field remains constant.

Why width of sheet does not decrease during cold rolling?

During cold rolling, the width of the sheet does not decrease because the material undergoes uniform deformation across its entire length. The pressure applied during the rolling process causes the material to elongate and reduce in thickness, but not in width. The width is maintained due to the lateral constraints provided by the rollers and guides.

What is the relevance of physics and technology in peoples daily lives?

technology is the easier of the two to answer... look at anything you have. It was made with technology. Your computer, your home, your car, even the carpets in your house and the clothes on your back.

Physics has far reaching effects in peoples lives. without physics, there would be no airplanes, no computers, no electricity. Physics is one of the basics behind almost every piece of technology.

How drive works Calculate time in one pulse?

To calculate the time for one pulse in a drive system, you need to know the pulse frequency or pulse rate of the drive. The time per pulse is the inverse of the pulse frequency. For example, if the pulse frequency is 100 Hz, the time for one pulse would be 1/100 = 0.01 seconds, or 10 milliseconds.

What happens if I put my quantum harmonizer in your photonic resonation chamber?

That action would likely result in a cascade of resonant quantum fluctuations, causing a destabilization of the chamber's photonic energy matrix. It could potentially lead to a disruptive feedback loop that may damage both devices.

What is the working principle of hardness tester?

Its basically like sonar. Sending a signal and bouncing it back through the material will vary in time it takes to receive the PING. The longer it takes to receive the PING, the harder the material.

Another Answer:

The common hardness test is the Indent Test. This test is used in relation to the Rockwell Hardness Scale. The instrument holds a probe called an Indenter. The machine is like a press that pushes the Indenter into the material at a known force. The depth of the indentation made in the material is a measure of its hardness on the Rockwell Hardness Scale.

Why is the spring of the hardness tester never be left under tension?

Leaving the spring of the hardness tester under tension for extended periods can lead to deformation or permanent set, affecting its accuracy and reliability. Releasing the tension when not in use helps maintain the spring's elasticity and ensures consistent hardness test results.

What wave can not propagate in vacuum?

Sound waves cannot propagate in vacuum because they require a medium to travel through such as air, water, or solids. Sound waves propagate through the vibration of particles in the medium, so without a medium to carry the vibrations, sound waves cannot travel in vacuum.

How can new technology make better maps?

Satellite technology and computer software have greatly improved the amount of detail and accuracy in map making. A prime example of this is Google Maps and Google Earth which not only creates a simulated topographical map of the entire world using real-life photos, but also incorporates 3-D modeling to re-create structures and landmarks. Additionally, crowd sourcing information has led to map details being kept up to date on a regular basis.

How do you get led unstuck out of a mechanical pencil when the tip doesn't come off?

One option is to try using a needle or a small, sharp tool to carefully push the stuck lead back into the pencil. Another option is to try tapping the pencil gently on a hard surface to dislodge the stuck lead. If these methods don't work, it may be best to contact the manufacturer for guidance.

What does a snowflake taste like?

A snowflake is made up of frozen water and lacks flavor, so it essentially tastes like water. When a snowflake melts in your mouth, you may taste a slight cold sensation or refreshing feeling. Just be sure to catch a snowflake on your tongue before it melts!

How do you open a coin box on a washer without keys or a lock pick?

If you do not have keys or a lock pick, you may need to contact the manufacturer or a professional locksmith for assistance. Tampering with the coin box without proper tools or authorization may damage the machine and could be considered illegal.

Why do salts emit various colors of light when burned?

Salts contain metal ions that release energy as light when heated. The specific color of light emitted corresponds to the energy difference between the excited state and ground state of the metal ion. This phenomenon is called flame test, and it is used to identify elements in compounds based on the characteristic color they emit when burned.

What is a good way for your group to present your science report its about technology and mechanics we don't want to do a power point but want to make it fun help?

You can consider creating a skit or role-play that demonstrates the key concepts in your science report using humor or a storytelling approach. Another fun idea is to create a short video or animation to visually present your information in an engaging way. Finally, you could set up interactive stations or demonstrations where your group members can showcase hands-on experiments related to your topic.

Why does your steam iron smell awful?

It's either something stuck to the sole plate or a contaminant in the water you're using. If you're in a 'hard water' area - it could be calcium carbonate deposits inside the iron. In which case there are commercial products available to treat the problem.

How dangerous are radar?

Radars themselves are not dangerous to humans. However, radar systems that emit high-powered electromagnetic radiation can pose health risks if proper safety guidelines are not followed. It is important for individuals working around radar systems to adhere to safety protocols to minimize any potential health hazards.

How do you take apart a Holmes humidifier to clean the fan blade?

To clean the fan blade of a Holmes humidifier, first ensure the device is unplugged. Locate the screws or clips holding the front cover in place and remove them. Take out the front cover carefully to access the fan blade for cleaning. Wipe the fan blade with a damp cloth or brush to remove any built-up dust or debris.

What is the name of elements that conduct electricity?

Electricity is electrons flowing through an object---any object. The structure of metals makes it easier for electrons to flow. Also, electricity flows at very fast speed. However the electrons do not flow the same speed. Otherwise, when you turn on your light switch, an electron at the Power Station 10 miles away would zip into your house and to your light. Think of it as a long 100 foot tube(the wire) filled with ping pong balls. You start by pushing a ball into one end of the tube and a ball falls out the other end. The balls didn't travel at 100 feet; but the energy did.

Where would you find a series circuit?

The main advantage of a series circuits comes from the fact that when you add a power source, its voltage just gets added to voltage of the circuit. This increase in voltage allows you to easily increase the power going to any electrical device just by adding more sources of voltage. In addition, since current is constant across a series circuit, if you have a collection of devices that all require the same or closely related current, a series circuit instantly gets you there. Finally, on a more economical note, since you only need to wire one loop in series (as opposed to multiple in parallel) you will end up using less wire and spending less on materials to create your circuit.

However, if you plan on powering multiple devices at once with the ability to remove any of them at any time or want them to have the same voltage and not the same current, you will have little choice but to concede and use a parallel circuit structure instead.