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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 scienctist used the S shaped flask?

Louis Pasteur is the scientist who used the S-shaped flask in his experiments to disprove the idea of spontaneous generation. This famous experiment led to the development of the germ theory of disease and the field of microbiology.

Why are washers called washers?

Assuming you mean the flat disc with a hole for screws or bolts. I could not find any clear meaning of how this word came to be. It doesn't really have anything to do with washing (cleaning) anything. There is a reference to an old French word meaning screw. See related link.

How would the life of human beings be if there was no frictional force?

You would not be able to walk. Walking is the friction of your shoe againjst the ground. Without friction, you would not go anywhere. A good example, all though not completely frictionless, is ice. Walking on clean, clear ice is very hard because of the lack of friction.

Show me a picture of an atom model with two electrons?

I'm unable to display images as I'm a text-based assistant. However, a basic representation of an atom with two electrons would have a nucleus at the center (protons and neutrons) and two electrons moving around the nucleus in specific energy levels or orbitals. The electrons would be depicted as small, negatively charged particles orbiting the nucleus at different distances.

Is a solid hologram that you can feel and touch possible?

holograms are projections of light that render a three dimensional view of a person, place, or thing. Compressed light is the only way to make it physically tangible. And in that case all you would feel is a burning sensation as the compressed energy bombards your body at the speed of light.

however, there are ways to add sensation to the hologram using additional sources. a Japanese lab, for example, was able to, in 2009, create a system that allows a person to feel and interact with a hologram using ultrasound to produce tactile feedback and wiimotes to track movement.

Is pressure a scalar quantity justify with an example?

Yup!

We know that the scalar quantity is a quantity which is having magnitude but not having "DIRECTION"

pressure is a scalar quantity for the reason that it's not having any direction

Means it is directionless......

Have you ever heard saying anyone that the pressure applied was 730 torrs in west , east or north south direction?????????>

No, it is IMPOSSIBLe.....

An instrument used to detect and record earthquakes?

A seismometer is used to detect and record earthquakes by measuring the motion of the ground. It consists of a mass suspended on a spring that moves with the vibrations caused by an earthquake, which is then recorded on a seismograph.

When does exposure cause saturation?

Exposure causes saturation when the sensor or film in a camera receives too much light, causing the highlights in the image to lose detail and become pure white. This can happen in very bright lighting conditions or when the camera settings are not adjusted properly to control the amount of light hitting the sensor.

Why pressure gauge is called a gauge not a meter?

A pressure gauge is called a gauge because it typically measures pressure relative to atmospheric pressure, which is often considered as the reference point or zero point for pressure measurements. On the other hand, a meter usually measures absolute values without reference to a specific point.

What are some experiments to see if you have ghosts?

When you think something or some place is haunted take a picture of it and look for white orbs in the picture and it might be a spirit or dust particle.....most likely a dust particle but its still a good experiment

What kind of iron will heat to 400 degrees Celsius?

A ceramic flat iron is a common type of hair styling tool that can reach temperatures up to 400 degrees Celsius. Ceramic hair straighteners are designed to evenly distribute heat and minimize hair damage while providing high heat settings for styling.

What is the force that enablesplanes to stay in the air?

air pressure.

low pressure above wing

high pressure below

caused by shape of wing

if air was thinner (no oxygen in atmosphere) planes would need rockets on them instead of jet engines

How do you dilute fragrances?

To dilute fragrances, you can mix the fragrance with a neutral carrier oil such as jojoba oil or fractionated coconut oil. Start with a small amount of the fragrance oil and gradually add the carrier oil until you reach your desired concentration. Be sure to mix well to ensure the fragrance is evenly distributed.

What happens to an object created inside a procedure when the procedure finishes?

When a procedure finishes, any objects created inside it are typically destroyed and their memory is deallocated, unless the object is returned from the procedure or stored in a way that allows it to persist beyond the procedure's scope. If the object is not properly managed, it may lead to memory leaks or unexpected behavior in the program.

What does the term transfer rate mean?

Transfer rate refers to the speed at which data can be moved from one location to another, typically measured in bits or bytes per second. It is commonly used in the context of computer networks, where it represents the rate at which data can be transmitted between devices or over a network connection.

What form of energy must solar energy be changed into in order to run household appliances?

Solar energy must be converted into electrical energy in order to run household appliances. This is typically done through the use of solar panels, which capture sunlight and convert it into electricity that can be used to power electronic devices.

How did people first make ice?

The first use of ice was from natural sources. These varied depending on the location. Ice can be obtained from glaciers, or from frozen bodies of water in the winter.

The first refrigerant used to make ice was probably ammonia. Later freon became more popular. Newer, less polluting gases are now used.

In a pinch, say an emergency situation where you have no access to electricity, you can make ice by dissolving ammonia fertilizer in water, and placing fresh water in metal containers, floating on top of the ammonia/water solution. It takes a while, but it can work.

What is the meaning of DOA?

Department of Administration

Department of Agriculture

Dead on Arrival

Dead or Alive

Just to name a few.

What are the metric paper sizes of A0-A5?

A5 = 148 x 210mm

A4 = 210 x 297mm

A3 = 297 x 420mm

A2 = 420 x 594mm

A1 = 594 x 841mm

A0 = 841 x 1189mm

2A0 = 1189 x 1682mm

4A0 = 1682 x 2378mm

What does smooth surface look like under a micropscope?

A smooth surface will appear uniform and featureless under a microscope, without any visible bumps or irregularities. The surface will reflect light evenly, creating a flat and consistent appearance in the magnified image.

How do you use inqualities?

Inequalities are used to compare two expressions that are not equal. To solve inequalities, follow the same rules as equations (e.g. add, subtract, multiply, or divide both sides by the same number), but remember to reverse the inequality sign if you multiply or divide by a negative number. Graph the solution on a number line to represent the possible values that satisfy the inequality.

What is sixth sense in washing machine?

The sixth sense technology in a washing machine refers to sensors that monitor and adjust the washing machine's settings based on the amount of laundry, type of fabric, and level of dirtiness. This technology helps optimize washing performance and energy efficiency, resulting in better cleaning results.

What would happen if you kicked Spider-Man in the balls?

It is Extremely obvious, spiderman is a fictional character, so just about nothing however, if you were consenting to if he was in real life, he would fall on the ground holding his balls and crying like an infant. this would happen because spiderman is really Peter Parker which is a normal boy who is like part spider.

How many watts can an led need to light up?

It depends on the color of the led you have.

Normally it changes between 1.5 V and 2.5 V. But if you need to use white or purple leds those leds need more power like 4-5Volts.

Im gonna calculate for a standart red led, a red led needs 20 mA and 2 volts to light up. So we know the formula that we can calculate how many watts does the led need,

P = U * I

P = 2 * 0.02 = 0.04 W.

I used the average values. I hope I didnt make any mistake :)

How has technology helped solve problems?

Technology has helped solve problems by allowing for faster communication, access to information, and automation of tasks. It has revolutionized industries such as healthcare, education, and transportation by providing innovative solutions to complex challenges. Additionally, technology has enabled remote work, connectivity, and collaboration on a global scale.