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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 is the difference between compressor and condensor?

Compressors are similar to pumps: both increase the pressure on a fluid and both can transport the fluid through a pipe. As gases are compressible, the compressor also reduces the volume of a gas. Liquids are relatively incompressible, so the main action of a pump is to pressurize and transport liquids.

In systems involving heat transfer, a condenser is a device or unit used to condense a substance from its gaseous to its liquid state, typically by cooling it. In so doing, the latent heat is given up by the substance, and will transfer to the condenser coolant. Condensers are typically heat exchangers which have various designs and come in many sizes ranging from rather small (hand-held) to very large industrial-scale units used in plant processes. For example, a refrigerator uses a condenser to get rid of heat extracted from the interior of the unit to the outside air. Condensers are used in air conditioning, industrial chemical processes such as distillation, steam power plants and other heat-exchange systems. Use of cooling water or surrounding air as the coolant is common in many condensers.

Is silk good to wear in hot weather?

Yes, silk is a breathable and lightweight fabric that can help keep you cool in hot weather by allowing your skin to breathe. It also has moisture-wicking properties, making it a good choice for staying comfortable in warm temperatures.

What is meant by quantization of energy?

The term quantum is taken from Latin and simply means amount or quantity. In the field of quantum mechanics it has been determined that there is a specific amount of matter, energy, space, or time, which is the smallest possible amount. In other words, energy comes only in certain packages. It cannot be subdivided without limit, into ever smaller amounts. This is not unlike the fact that there is a smallest amount of any given chemical element. The smallest amount of oxygen you can have is one oxygen atom. You can cut it in half, but if you do, it isn't oxygen anymore. However, you can't cut one quantum of energy in half. One quantum of energy is the smallest amount of energy that you can have. No smaller amount is possible. Physicists will express this idea by saying that energy is quantized.

How do you fade out polyester?

To fade polyester fabric, you can try soaking it in a mixture of hot water and bleach for a short period of time. Rinse it thoroughly after soaking and repeat the process if needed. Keep in mind that excessive exposure to bleach can weaken the fabric, so it's crucial to monitor the process carefully.

Do microwaves use infrared technology?

No, microwaves use electromagnetic radiation in the microwave range (around 2.45 GHz) to heat food. Infrared technology is different, using electromagnetic radiation in the infrared spectrum to transfer heat.

The portion of apparent power that doesn t do any work is termed as?

Reactive power is the portion of apparent power that does not do any useful work, but instead oscillates between the source and load causing voltage and current to be out of phase.

What is crystaline material?

Crystalline is a solid material whose constituent atoms, molecules or ions are arranged in an orderly repeating pattern that extends in all three spatial dimensions. The scientific study of crystals and crystal formation is known as crystallography.

Why did it take so long to figure out how to make white LEDs?

There is no such thing as a white LED.

You produce white light from LEDs by combining red, green and blue LEDs.

Red LEDs were produced first because red is a low frequency of light. It was the easiest to make.

Green LEDs were produced next because green is a higher frequency of light. It was harder to make.

By combining red and green LEDs, you can produce yellow light.

Blue is a very high frequency of light and is very hard to produce. Blue LEDs and blue lasers (as in BluRay) took a great deal of effort to create. LED technology and some kinds of laser technology are very closely related.

Is looking at a laser more dangerous than looking at a light-bulb of the same intensity?

Yes, looking at a laser can be more dangerous than looking at a light bulb of the same intensity. This is because lasers emit highly concentrated, powerful beams of light that can cause eye damage much more quickly than the diffused light from a light bulb.

What metals are used to make ferromagnets?

Iron, nickel, and cobalt are the most common metals used to make ferromagnets. These metals have magnetic properties that allow them to be easily magnetized and retain their magnetism.

Movement of one body around another body?

This movement is called orbiting, where one body revolves around another due to gravitational attraction. The body being orbited is typically larger and more massive, while the orbiting body is referred to as a satellite. Orbits can be either elliptical or circular depending on the initial conditions and speed of the orbiting body.

What is a fule cell?

A fuel cell is a device that converts chemical energy from a fuel into electricity through an electrochemical reaction. It typically consists of an anode, a cathode, and an electrolyte. Fuel cells are used in various applications, including powering vehicles and providing electricity for buildings.

Is metal sustainable?

Metal can be sustainable when extracted and processed using environmentally-friendly methods, such as recycling. However, the mining and production of primary metals can have negative impacts on the environment and ecosystems. Recycling metal reduces the need for primary metal extraction and helps conserve natural resources.

How does an old seismograph work?

The seismograph works as follows. A pen, along with a particular calculated amount of (small) weight is attached to a spring. The other end of the spring is attached to a heavy and stable(so that it can with stand the earthquakes) base support. When an earth quake occurs, the movement of the smaller weight is recorded on a roll of moving paper by the pen. Then the extent of the earthquake is measured by those graphs(seismographs).

The insulator keeps the electricity inside the wire and?

prevents it from escaping into the surrounding environment. Insulators are materials with high resistance to electrical current, helping to maintain the flow of electricity along the intended path. Without insulators, there would be a risk of electric shock or short circuits.

What some things which use light?

Most living organisms, you included, and of course, plants.

Why doesn't ceramic conduct electricity?

Ceramic materials are typically non-conductive because their atomic structure does not allow for the easy movement of electrons. This means that electrons cannot flow through the material to create an electrical current. Additionally, ceramics are usually insulators with high resistivity, further inhibiting electrical conduction.

What are the customs and traditions of Christianity?

Customs? well. Easter and Christmas. some people have ash wendsday and good friday There are really no traditions unless you count baptism which is "purifying" someone with water. It actually means to start over and give ur life fully to God. Communion- the metaphorical passing of jesus' blood and body (wine + bread). It is from Jesus' last supper w/ his disiples before he died for mankinds sins. Easter is when Jesus came back from the grave to complete his sacrifice and go to heaven with his father. Christmas is when Jesus was supposidly born. Prayer to God i guess is a custom.

What is the strongest natural fiber?

Spider silk is widely considered to be the strongest natural fiber. It has a tensile strength that is comparable to steel, yet it is lightweight and flexible.

Does lighter objects have mor or less inertia then heavier objects?

Lighter Objects have LESS "inertia". Mass is physical manifestation of inertia. Mass is weight so the more mass the more potential inertia to over-come -- either to make an object move or to stop an object once it is moving.

So, if a meteorite weighing 1 gram hits a space station weighing 1,000 tons the likelihood of the object causing damage is proportional to the speed of the meteorite; but if the meteorite weighs 1,000 tons (same as space station) the sheer mass alone would cause damage (regardless of movement because any movement would be too much.)

Is compression a drag force?

No, compression is not a drag force. Compression refers to the reduction in size or volume of a substance due to external pressure, while drag force is a resistive force that opposes an object's motion through a fluid.

How many mAh does a 9.6v have?

To calculate the mAh capacity, we need to know the current rating of the battery as well. The mAh (milliampere-hour) capacity is a measure of how much charge a battery can hold over time. It is not determined solely by the voltage (9.6V in this case) but also by the current rating of the battery.

Why are blobs big?

Blobs appear big due to their amorphous and shapeless structure, which lacks defined boundaries or edges. Their size can vary depending on the amount of material they contain or the environment they are in. Blobs are often depicted as large to emphasize their formless and ever-changing nature.

Why does a battery supply direct current?

A battery supplies direct current (DC) because it produces a constant flow of electrons in one direction within the circuit. This is achieved through a chemical reaction that establishes a potential difference. In contrast, alternating current (AC) changes direction periodically, making it more suitable for long-distance power transmission.

What is a small angled surface formed between two surfaces?

A small angled surface formed between two surfaces is called a chamfer. Chamfers are typically created to ease sharp edges or remove burrs, and they can also provide a finished appearance to a part or product.