Common Questions for Screens Led Board

ViewSonic VX2250WM-LED 22-Inch (21.5-Inch Vis) Widescreen Full HD 1080p LED Monitor with Integrated Stereo Speakers is a great monitor for the price. It has an amazing display that hasn't gotten less brilliant. The only two issues I've had with it is the fact that my desk is kind of crappy so the monitor does a fairly significant amount of wobbling and the other issue is the menu. For some reason a few days ago the menu began popping up and wouldn't go away. I tried just about everything and the only thing that worked was unplugging all of the cables to the monitor and then pressing the power button for ten seconds. I plugged everything back in and it has since worked like a charm.

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2. Measuring light science fair experiments?

Get a large box and have a hole in the box at the top and a smaller one on one of its sides...

Paint the inside of the box flat white...

Create a piece of wood that is larger than the hole in the top....

Mount on the piece of wood a white porcelain light bulb fixture....

Screw in an incandescent light (of X watts) and have the LUX meter measure the light coming through the small side hole...

Now buy an LED light that says it has X watt equivalent and check to see if it does....

I just purchased a 60 watt LED replacement from Lowe's...

Part number:

SYLV 800LM SERIES 1PK LED A-19

Item#:221498 | Model#:78675I wonder if it does....

Try other LED replacement lights - GE has some....

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3. Where can I find a Himalayan Salt Lamp, except battery-powered?

It will cost you more to use batteries. The bulbs in salt lamps are typically 15 watt bulbs or less, though some larger ones use 25 watt bulbs. With the electricity rates at my house, I could run a 15 watt salt lamp for 66 hours for 10 cents. And batteries aren't free.

I just looked at some camping lanterns which run on LED lights that use much less power than a 15 watt light bulb. An entire string of LED Christmas lights, for example, only uses 4 watts. One camping lantern says it will run for 16 hours on 4 AA batteries. Those batteries would cost me about $1 each so it would cost about 4 dollars to run that camping lantern for 16 hours. For 4 dollars, I can buy 40 kilowatt hours of electricity at home and that would run a 15 watt salt lamp plugged into a wall outlet for 2640 hours.

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4. I have to report for SSB in 20 days. I have recently put weight, I am 86kgs and 5'7''. How likely am I to be screened out because of my weight?

You won't get screened out because I just attended an AFSB till the final day, last month with almost similar features (My weight was just a few kgs lesser and I'm 2 inches taller than you). Screening has nothing to do with your body structure. It just depends on your ability to communicate and convince others (not including the OIR here). However, you may face considerable problems in the group tasks and individual obstacles. In my case, the hardest task for me was the individual obstacles as I could barely manage to do 3. I'm pretty sure that's what led to my rejection at the board because I did my other tasks well. So, I suggest you start working out as much as possible from today itself. Even a small change in your physique can make a massive difference in your performance at the board.Good luck!

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5. How would you feel if you led an extraterrestrial expedition to Earth and upon landing, is approached by a human cult who believes that you arrived to take them from Earth to paradise and insist you allow them to board your expedition ships?

Question: How would you feel if you led an extraterrestrial expedition to Earth and upon landing, is approached by a human cult who believes that you arrived to take them from Earth to paradise and insist you allow them to board your expedition ships?How would I feel? It depends on how much prior exposure I had to human culture. If this were a First Contact scenario, and this hadnt been something that happened in previous First Contact scenarios, Id likely be embarrassed and confused.As for how I would actually react that would depend on far too many variables to offer a good answer, not least of which being what my purpose was on Earth, and whether or not my ship could even accommodate them.

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6. How will MicroLED technology change electronics?

It will make as big of a difference as LED backlit TVs made, and OLED TVs made to electrnoics.nFor the most part it simply means that your higher end screen will be made with a new technology.The production costs of this are not just due to demand/quantity of production, but also due to failure rate. While improvements and refinements to the process will likely occur, this technology will likely never become so inexpensive that they will be used over normal LED lights that are currently emebeded into circuit boards.nThus its vast majority use will still be in high end displays.One large pro for mLED over OLED is that mLED does not get the burn-in effect from statitc images. I know a few people who would have paid the extra $1000 for OLED TV if it were not for this drawback.

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7. Is the lighting level of 100 lux for internal staircase applicable throughout the length of the stairway?

If it is a violation of building codes depends on the codes in your location. Also is this stairway in a private residence or a pubic place? The international code is 1 foot candle (10.76 lux) at the center of each tread and landing. As a comparison a brightly lit office has about 400 lux. Moonlight on a clear night would have only 1 lux. If the stairway is light in color you may be able to get by with 100 lux. The lighting should be more uniform. Possibly two fixtures with lower output might do a better job. Note that the wattage output is not directly related to the light output. This only tells you how much wattage the bulb, fluorescent, halogen or LED consumes. The same with appliances that manufacturers rate in watts. This only tells you how much electricity it takes to run it not how efficient or powerful it is. See the the website below for a discussion of lux, lumens and watts.

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8. are LED house lights as bright and good as normal house lights?

According to Haitz's law, the brightness of commercial LEDs doubles every 18 months so wait a few more years.

Note that there really is no such thing as white LED light, it's either red green and blue LED's combining to give the illusion of white light or a blue or UV LED with phosphors that absorb the energy and re-emit the light in different wavelengths just as is done with fluorescent lights. Note that the white from phosphors are also just an illusion as phosphers are selected to re-emit the light in various wavelengths and it's the blend of a number of such phosphers that give the illusion of white light.

You'll probably want at least a 6 to 8 watt LED bulb to replace a 60 watt incandescent.

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9. Which is a better phone: Moto X Play or Moto G4?

Well it's depends on your use .

I'm using moto x play now.

But i have seen features of Moto g4 plus .

All the features of moto g4 plus and moto x play are same.

Moto g4 plus come with some new features like fingerprint lock, better camera experience ,turbo charger.This is moto g4 plus.

Specifications of moto g4 plus are here.

Moto g4 is completely new phone than moto x play .

But in compression moto x play have 21 mp rear camera where moto g4 plus have 16 mp rear camera.

In battery compression:

Moto x play-3630 mAh

G4 plus-3000 mAh

Also price difference between them.

Moto x play is little heavy than moto g4 plus.To see batter review you must go on this links: For moto g4 plus for x playI like fingerprint sensor of g4 plus. Moto x play is also good.Thankx

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10. Which institute is better for UPSC preparation, Vajiram or Sriram?

If you go with the current trend, most of the toppers have said that self study is the key to clear CSE. Most of them had joined coaching classes for their first attempt but eventually their dream of becoming IAS turned true in later attempts.But, as you have asked for UPSC preparations and not IAS specifically, i'll suggest Vajiram, as they have a better record. Srirams is very famous for economics and geography, but i have heard that their polity faculty is not very good.Vajiram is comparatively good in all subjects but it has strength of 300 students in a batch, so you need to be an early bird with Vulcan ears.so you can judge for yourself as accommodation and metro connectivity also plays a spoilsport for deciding coaching classes.

Lastly, again i'll suggest, its your hard work, these institutes are just to guide!!All the best!!

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11. I'm making a solar LED light, can you tell me if this will work?

Simply - no A photo resistor varies in resistance - it still leaks and will drain the battery. Also, a photo resistor works backward from what you want - low resistance in light, high blocking resistance in dark. You need a switch. The cells will charge somewhat, but probably not enough. Many more cells on the top of decorative yard and hanging lights only light one LED. The AAA cell will only hold enough power for a couple of LED's not 10 if you are talking for a couple of hours. It will depend on the drain of the LEDs which varies. You will have to use a photo electronic switch that has a manual switch, otherwise they will come on and drain the battery while parked in the garage, etc.

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12. Couple questions about GE Energy Smart bulbs vs standard/reveal bulbs.?

1. A 100 watt bulb uses 1/10 of a KiloWatt/Hour per hour, the average cost of electricity in the US is "about" 10 an kw/h hour, so it cost about 1 an hour. If used 4 hours a day it would cost $14 a year.

2. Per bulb (26w being about 1/4 of 100w, 1/4 of $14 would $3.65, GE must have been using a slightly lower kwh price or less hour a day in their calc's)

3. The watt rating is a heat issue. A 26w bulb is a 26w bulb. The labeling on the box is for comparable light output levels, but has no relation to the wattage/heat put on the socket. (The geeky details are electricity produces 3.4 btu's of heat per watt, doesn't matter if it is a CFL, an incandescent, LED, portable space heater, plasma TV, or cell phone charger.)

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13. I have 6v, 4.5Ah lead Acid battery (cycle use 7.20v-7.50v / max charging current 1.35A) . which i want to use?

You need the specifications for the LEDs. I'll put in some numbers as an example, but they vary a lot.

The important specs are

typical Vf, say 2.0 volts

Average current, If, say 20 mA or 0.02 amps

Assuming the max voltage out of your battery is 6.3 volts

Now you wire each LED with a series resistor, which is calculated as follows:

R (6.32.0) / 0.02 215 ohms. Use a value somewhat higher to allow for variation in Vf, say 250 ohms.

So you wire from battery to one lead of resistor

from other lead of resistor to lead (anode) of LED

from lead (cathode) to battery

repeat this for each LED.

good luck

PS, calculate the power rating on the resistor as

P (6.32.0) x 0.02 0.085 watts

Normally you double the actual dissipation and get a resistor that is rated for that power. Resistors come in 1/4, 1/2, 1 , 2, 5, 10 watt sizes. In this case, a 1/4 watt resistor is fine.

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14. Is machine learning an automation?

No.Automation makes some logic according to algorithm. You read imputs, make some logic, and write outputs.Machine learning creates outputs based on learning from the past. You train machine with some training data, and system tries to find the best result for your input data. But it is not exact calculation. It is more optimalisation.It is good, if you cannot describe easily system with 1 and 0, because the world is not just black and white. But you can optimise output, to get best possible result.

Good example is writing text recognition. You cant make program, and say: this is writing A, because each people write A different, and off course one person will not write letter the same. But you can train system, to recognize letter with some probability