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Consumer Electronics

Ask questions here about the electronics you use every day: from phones and computers to kitchen appliances and radios.

4,952 Questions

What is air viscosity?

Air viscosity is a measure of the resistance of air to flow or movement. It is influenced by factors such as temperature and pressure, with higher temperatures and lower pressures generally leading to lower viscosity. Viscosity is an important factor in aerodynamics and fluid dynamics, affecting how air flows around objects and surfaces.

Rebecca is conducting an experiment to see if the height of a ramp affects the speed at which a marble rolls down the ramp What should be the only variable in Rebecca's experiment?

The height of the ramp should be the only variable in Rebecca's experiment. All other factors should be kept constant to isolate the effect of ramp height on the speed of the marble.

Hertz cycle meter on a generator that is not showing a reading how can it be checked?

Disconnect and take the meter out. If it is a 120V meter, just connect it to a lamp cord and plug it in. If it still doesn't register, you have a dead meter. Sometimes they get stuck...you can tap on the face gently if nothing else works. Oh, and BE CAREFUL with that high voltage!!!

How does traveling at light speed negate time?

Answer:

In fact light speed is not the question you should be asking. It should be "when traveling at the universal speed limit, why does time slow down." The answer is that no matter how fast you are traveling the universal speed limit (equal to light speed because it goes max speed) is viewed the same. The theory is that all clocks/measuring devices are morphed in the same way so that when it measures the speed limit it is still the speed of light (universal speed limit)

AKA, all clocks, even biological, are slowed down as it travels faster through space time. So your perception is slowed and your recognition of this perception is slowed, so for you time appears the same. If you travel 95% the speed of light and flick on a light, it wont travel 5% the speed of light away from you, it will travel 100% the speed of light away from you due to your space time warping. This also happens the nearer you are to a large mass. aka a black hole. It also warps the space time around you.

Alternate points of view... Take for example, you are traveling in a car at any speed. You pass cars traveling slower than you are. They appear to travel backwards. This is of course only relative to YOU. They are actually traveling forwards. If you think of yourself in the car as the speed of light, and the other cars as time, that's how it works. Of course, light travels SO fast that it bends TIME only relative to YOU. It's not like the whole world actually stops or slows down. It's only you who feels it. Just like overtaking a car. But that's only a simple explanation.

In laymans terms, traveling at light speed means that you are traveling at a speed greater than the speed of time. Therefore time is at a fixed rate, and the speed that light travels is at a fixed rate also. So to travel light speed actually gives you an advantage over time itself. It has been mathematically determined that the longer you travel at this speed, the more advantage you gain, so it would be possible for a child to travel at this speed for a computed time, and return to see that several generations have passed while he/she would have only aged the number of days / months traveled in spaceship time.

Another layman's view:Traveling at light speed really doesn't negate time. It is just that time is relative, as is velocity. My computer seems motionless to me, but an observer looking down at the solar system would see me and my computer moving quite rapidly. If you could get into a ship and accelerate to very near the speed of light and travel for ten earth years, your personal experience of time will not seem to you to have been any different from when you were on earth. Every moment would have passed normally for you, without anything seeming odd. It's just that at the end of the trip, you will have experienced it as only a fraction of the ten years. It will seem impossible to you that 10 years has gone by on earth. Time will have gone by differently for you than for earth. The same thing would happen even if you could reach the velocity of light. Upon decelerating, you would not report anything unusual regarding your experience of the passage of time; time will have passed for you as normally as ever. But you will notice that you spanned a huge distance instantaneously. You would find it nearly impossible to believe that dozens, hundreds or thousands of earth years had passed by during that instantaneous surge. From your vantage point in that ship, you could as easily ask: How does traveling at light speed accelerate time (for earth)? It doesn't.

How do I make my space heater hotter?

To make your space heater hotter, you can try increasing the heat setting on the heater if it has adjustable settings. Make sure the heater is clean and free of debris, as this can affect its efficiency. Additionally, placing the heater in a smaller, enclosed space can help it heat up the area faster.

Theory of lightning?

When to much stress is brought on by the build up of electrons in upper clouds and a lack of electrons from below, energy is released in the form of bright lights, thus creating lightning.

The sound that makes thunder is created when the lightning heats up the surrounding air in an instant making the gasses in the air explode, thus making the popping noise.

Since light travels faster than sound, that's why lightning is seen before thunder is heard.

Does lead corrode?

Lead does corrode but it certainly does not corrode as easily as iron or steel. For example in electrolysis when you put metal in the water the bubbles start to form hydrogen and oxygen, this corrodes the metal. But lead will not corrode that easily in this process.

Lead may corroded by sulfuric acid; but generally lead is very resistant to corrosion.

What is an example of a compound machine?

A bicycle is an example of a compound machine, as it consists of various simple machines like wheels and gears working together to enable its functionality.

How do you get 20 brain age on brain age 2?

Rock Paper Scissors is the key game...I think you can only get 20 if you are under 1 minute and 4 seconds in Rock paper scissors and of course you have to do pretty well in the other two games too, but that is a lot easier. I now get 20 (or 21) about 90% of the time, unless I really mess up on one of the tasks.

Whats the biggest ethnicity in China?

I believe it's the Han but that can be further subdivided if you want to be picky. Not sure if that helped....

What is the difference between electricity and electrons?

Electrons are the free moving atomic particles that rotate around a nucleus in the atomic structure of elements (e.g. copper). Electricity is the movement of the electron's charge from one atom's electron to another by transfer of the charge. The "push" to move these charges is called "electro motive force" or EMF. This force is induced by a method, such as build up of a greater charge on electrons in one area then another. When you want the electrons to do work you must have them move their charge. This is called current flow, measured in amperes, or just amp. An amp is a measure of a certain number (a BIG number) of electrons past a point. When the electons have their charge "flow" through a wire, the current cause a magnetic build-up to occur around the wire - this is called flux. The flux can be induced into other material - e.g. other wires) to do useful work. This is the case with a motor, which uses the flux to have the magnetic forces cause movement - useful work. In the case of a clothes iron, there is no movement but the flow of electrons cause heat to build up. This is a simplistic explanation but think of it as an electron is a bucket of water and electricity is a channel of flowing water.

How do you rewire a 220 volt motor to run as a 110 volt motor on a old Howell electric motor?

Determine which leads are run leads, and which are start leads, or which are a combination of both. Once determined the overall solution is to parallel the windings externally, where at a higher voltage 1 motor lead per line is used, 2 would used per line in parallel.

Leads marked 1 through 4 would be connected 1 to line, and 4 to line with 2 and 3 electrically connected and isolated as a series connection for the higher 220 single phase voltage.

Rewire or reconnecting if possible to 110 would then be connected motor lead 1 and 3 to one of the 110 volt lines and the remaining motor leads 2 and 4 to the other 110 volt line.

In some cases the parallel connection could be 1 and 2 to line, and 3 and 4 to line for 110 volts.

It makes no difference on an induction single phase motor which line from the 110 either hot or neutral is connected to either pair of motor leads.

How is copper refined?

Copper is refined through a process called electrolysis. In this process, copper ore is first crushed and then smelted to extract the metal. The molten copper is then electrolytically refined to remove impurities and produce high-purity copper cathodes.

How do you become a electrition?

Best bet is to call a local electrical company and ask them what the requirements are for becoming and electrician. It will involve getting yourself some education in one form or another, but depending on the area in which you life, it could be financially rewarding.

How many mega watts in a tara watt?

Mega stands for 10^6 (10 raised to power 6 or 1 followed by 6 zeroes). Giga stands for 10^9 (10 raised to power 9 or 1 followed by 9 zeroes).

Tera stands for 10^12 (10 raised to power 12 or 1 followed by 12 zeroes). In effect:

1 Tera Watt will have 10^6 (1 followed by 6 zeroes) Mega Watts or

1 Tera Watt = 1000000 Mega Watt or

1 Tera Watt = 1 Mega Mega Watt - Neeraj Sharma

What is the thermo flask?

Thermos flask is a thermos container used to store liquids like any hot drink. The liquid added to thermos flask will retain the temperature even after some time irrespective of external temperatures.

What is the ideal temperature humidity and static levels for reticle storage?

Reticles should be stored at the same temperature as the reticle stage in the stepper or scanner, otherwise overlay errors may occur due to dimensional changes after alignment. Some litho tools allow reticles to be stored inside them for some time before use to allow temperature stabilisation. Humidity levels should be moderate - typically 50% RH is fine. There should be NO static charge in a reticle storage environment. Ionizers are virtually compulsory. However, don't be tempted to GROUND the reticle itself as it will be more likely to be damaged if it is grounded. One cannot discharge a reticle safely by grounding it - and if there is a field around a grounded reticle the field will be focused onto the reticle - so the best solution is to keep the reticle away from ground and to keep it in an ionized atmosphere.

What did Donald hings invent?

Donald Lewis Hings He created a portable radio signaling system for his employer CM&S, which he called a "packset", but which later became known as the "Walkie-Talkie".

Who created the first light bulb?

The creator of the first working light bulb was Joseph Wilson Swan. Swan's house was the first place in the world to be lit by a light bulb (and hydroelectric power). He patented the light bulb in England.

Thomas Alva Edison improved Swan's light bulb by using a better incandescent material and a higher vacuum and patented it in the US.

Rather than fighting for the ownership of the patent, Swan and Edison formed the Edison & Swan United Electric Light Company.

Do fans in general use a lot of electricity?

energy is energy It does not matter what you are using the energy for, it matters how much energy you are using A 200 watt light bulb uses more energy than a 100 watt light bulb A 200 watt motor uses more energy than a 100 watt light bulb A 200 watt heater uses more energy than a 100 watt light bulb

Do the crosswalk buttons pedestrians push on traffic lights really work?

Yes Actually they do.. A scientist named Mike McAdams did a test on how long it took for the light to change without pressing the button, which took 2 minutes to change, but then he pressed the button and it only took 1 minute, 28 seconds.!!! And there is a code that allows you to change the light Immediatley by the button itself. Here is the Code: 3 Fast Clicks, 2 clicks, holding on the each of the two for atleast 5 seconds, 1 fast, 2 held ones again, and then 3 fast clicks, So it should be: click click click, cliiiiccckkkk, cliiiiicccckkk(holding down for 5 seconds), click, cliiiicccckkk cliiiiicccckkkk, then click click click!! Try it out

When was electricity founded?

Electricity itself was not "founded," as it is a natural phenomenon. However, the concept of harnessing electricity for practical use began to develop in the late 19th century with inventors like Thomas Edison and Nikola Tesla making significant contributions to the field.

What are the uses of electricity?

To keep you nice and cool, or used in electrical appliances to cool them.

Circulate air in a room.

What type of bond occurs when a positive ion and a negative ion are attracted to one anothe?

It is called an ionic bond when two ions of opposite charge are attracted to each other.

See the Related Questions to the left for more information about different types of bonds.