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Electronics

Electronics are a branch of technology and science that deals with the control of the flow of electrons.

3,725 Questions

What wavelength is the most beneficial for plant growth?

Red and Blue light are best for plant growth because those two wavelengths are what chlorophyll respond to.

.............if this is tru y not use a black light................it emits purple light

Where is the battery xc90?

The Battery is mounted in the boot (trunk) of this vehicle.

To access you need to go into the boot, lift the rear cover off (from the floor)

You should see the battery sitting in the middle of the rear (with a black plastic cover)

N.B. you can jump start this vehicle from the engine bay - where a positive feed (marked in red) is located by the front fuse board.

What is a central battery?

A central battery system is a setup where all the emergency lights in a building are powered from a central source, usually a bank of batteries. This design allows for easier maintenance and testing of emergency lighting systems.

Is EM Damping fields real?

Electromagnetic damping fields are a theoretical concept used in physics to describe the effects of electromagnetic fields on moving charged particles. While the idea of EM damping fields is used in theoretical models, their direct observation is not yet possible due to the complex nature of electromagnetic interactions at small scales.

What is the density of a battery?

The density of a battery can vary depending on its chemistry and design, but typical values range from 1.3 to 2.0 grams per cubic centimeter.

What is an apc battery?

An APC battery is a backup battery designed to provide emergency power to connected devices in case of a power outage or electrical surge. They are commonly used with uninterruptible power supplies (UPS) to provide temporary power to critical systems until regular power is restored.

Does HAARP exist?

HAARP, High Frequency Active Auroral Research Program, does exist. It is a basic research project of the USA (other countries have similar facilities), and conducts fundamental research on the physical and electrical properties of the ionosphere.

The power that HAARP can apply to its transmissions is large. The largest legal AM radio antenna in North America is 50 kilowatts. HARRP operates in the HF (High Frequency) range and its power capability is about 72 times that, at approximately 3,600 kilowatts.

*From time to time the Alaska facility holds Open House events that anyone may attend.

What are some examples for transducers?

An electronic device that will convert some form of energy produced by a physical stimulus to an electrical analogue of the stimulus can be mentioned as a transducer.

Among the most frequent examples there are microphones, loudspeakers, thermostats, position and pressure sensors, antenna and thermometers. Even photocells, LEDs (Light Emitting Diodes), and even common light bulbs are transducers, although they are not generally thought as transducers.

Since physical changes (heat, sound, pressure etc.) can be converted into electrical signals with transducers, they can be also used as sensors.

In electronics What does the p in OVP mean?

In electronics, OVP stands for Over Voltage Protection. The "p" in OVP does not have a specific meaning in this acronym. It indicates that the protection is in place to prevent excessive voltage levels that could potentially damage electronic components.

What is forward biased p-n junction?

A forward biased p-n junction is when an external voltage is applied in such a way that the positive terminal is connected to the p-type material and the negative terminal is connected to the n-type material. This reduces the barrier potential, allowing current to flow through the junction.

Does licking a AA battery extend the battery life?

No, licking a AA battery will not extend its life. In fact, it can be dangerous as it can cause a short circuit and harm your tongue. It's best to handle batteries carefully and not expose them to moisture or unnecessary contact.

How technology affect hrm practice?

Technology has revolutionized HRM practices by automating repetitive tasks such as payroll processing and recruitment. It has enabled the use of data analytics for informed decision-making and improved employee engagement through communication tools and online training platforms. However, it also poses challenges such as data privacy concerns and the need for upskilling HR professionals to leverage new technologies effectively.

How do you find wavelength of given light source using fresnel's biprism?

Using biprism interference pattern can be produced. Therefrom the band width beta is to be measured. Now using the formula, beta = lambda*D/d

Here lambda is the required wavelength of the source light. D is the distance of the screen from the virtual sources. d is the distance between the two virtual coherent sources. Knowing beta, D and d, required lambda could be calculated.

How do you make a machine that would loop press a button for 30 sec and let go again and again?

You can achieve this by connecting a mechanical arm or lever to a motor that can move it in a pressing motion. Then, program the motor to move the arm down to press the button for a set amount of time, followed by moving it back up to release the button. This sequence can be repeated continuously for 30 seconds.

Why did people invent motion lights?

People invented motion lights as a way to enhance security and safety around homes and buildings. By automatically turning on when motion is detected, they help deter potential intruders and provide visibility in dark areas. Additionally, they save energy by only operating when needed.

How many batteries does it take to light up a 25 watt bulb?

Is the bulb a 12 volt bulb or a 120 volt bulb?

Or does it have some other voltage such as 230 volts which is very common in Europe and many other countries of the world?

This question cannot be answered without knowing at least the voltage of the light bulb and also the voltages of the batteries that are being asked about.

What is the first step in recording sound waves?

The first step is amplification of the sound that is picked up by a microphone. This usually consists of a basic 'pre-amp' section which brings the audio signal up to workable levels, and a secondary amplification which makes the signal strong enough to be processed by the recoding circuit.

How do like charges and unlike charges interact?

Like charges repel each other, while unlike charges attract each other. This occurs due to the electric force, which acts between charged particles. Like charges have the same sign of charge (positive or negative), while unlike charges have different signs.

What is a Frequency Scintillation?

Frequency scintillation is a phenomenon in radio wave propagation where the frequency of a signal fluctuates rapidly due to variations in the ionosphere or other environmental conditions. These fluctuations can cause distortions in the signal, affecting communication and navigation systems. Frequency scintillation is often observed in satellite communications and radio astronomy.

How many 1.5 volt batteries does take to light up a big light bulb?

Is the bulb a 1.5 volt bulb? A 3 volt bulb? A 12 volt bulb or a 120 volt bulb?

Or does it have some other voltage such as 230 volts which is very common in Europe and many other countries of the world?

What is the wattage of the "big light bulb"?

This question cannot be answered without knowing at least the voltage and the wattage of the light bulb that is being asked about.

What does charge imbalance mean?

Charge imbalance refers to a situation where there is an unequal distribution of positive and negative charges within a system. This imbalance can lead to the creation of an electric field and potentially result in electrical currents flowing to restore equilibrium.

Why carbon is not used as semiconductor material?

Carbon has unique properties that make it challenging to use as a semiconductor material. It can exist in multiple structures (diamond, graphite, etc.) with varying electrical properties, making it difficult to control and predict its behavior as a semiconductor. Additionally, fabricating carbon-based semiconductor devices is technologically complex and expensive compared to traditional semiconductor materials like silicon.

What would happen if the two pith balls were held together for a few moments then released?

If the two pith balls were held together, they would acquire the same charge due to the contact between them. When released, they would then repel each other due to their like charges, causing the pith balls to move apart.

What is the mechanism of bullet train?

Bullet trains use electric motors powered by overhead lines or onboard batteries to propel the train forward. The trains also use magnetic levitation or steel wheels on steel rails to reduce friction and increase speed. The streamlined design of the trains minimizes air resistance, allowing them to reach high speeds efficiently.

How can piezoelectric materials generate electricity from human footsteps?

Just place a piezo electric crystal in your shoe then due to alternate change of your feet causes mechanical stress and strain .Inverse piezo electric effect states that when stress and strain is given along mechanical axes it creates electricity along electrical axes.Thus piezo electric crystal converts mechanical energy to electrical energy.