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What is the unit of frequency measured in cycles per second?
Frequency is no longer measured in cycles per second. It is now measured using the unit 'hertz' (abbreviation Hz). However, one hertz is exactly the same thing as one cycle per second.
What is the mains voltage barbados?
Same as the US and Canada, 110 V. However it has an electrical frequency of 50 Hz, which is 60 Hz in the US and Canada.
Identify three things that may cause monitor flicker?
Poor cable connections, accumulated or stray magnetic fields, high amount of electrical noise, or vertical scan frequency (refresh rate) below 70 Hz can cause monitor flicker. Page 423 in the A+ guide to managing and maintaining your PC, Sixth Edition
What are the wavelengths of brain waves?
This is straight from Wikipedia Delta up to 4 Hz Theta 4 - 7 Hz Alpha 8 - 12 Hz Beta 12 - 30 Hz Gamma 30 - 100 + Hz {| ! ! ! ! ! ! | |}
How do you convert Hz to Watts?
You cant. Hz measures frequency, where as Watts is a measurement of power.
What unit describes the refresh rate of TVs?
Hertz symbolized as Hz, describes the refresh rate of TVs.
Which is better for your eyes a monitor that supports 75hz refresh rate or one that supports 60hz refresh rate?
75 Hz
What is the best vertical refresh rate?
60 HZ interlaced
What is the refresh rate of the Sony KLH-W32 LCD Monitor?
The refresh rate for the Sony KLH-W32 LCD is 120 Hz.
Which monitor adjustments may effect eyestrain?
The brightness and contrast have some impact on eyestrain, but the main cause of eyestrain from computer monitors is the refresh rate. You should turn the refresh rate up as high as your monitor supports, especially if you are in an area with fluorescent lights. The default refresh rate for a monitor is 60 Hz, the same as fluorescent lights. With your monitor flickering at 60 Hz, and the lights flickering at 60 Hz (and not at the same time) the back-and-forth flickering, even though it can't be noticed, can cause considerable eye strain.
Which is better for your eyes a monitor that supports a 75 hz refresh rate or a 60 hz refresh rate?
For a CRT, I find 75 hz much better, particularly when under florescent lighting. Since the lights run at 120 hz, the monitor can get into a 'synch' with the lights which creates moire patterns on the screen. Changing the rate to 75 or higher prevents this from happening and reduces eye strain. LCD screens (flat screens) are not likely to have this issue at all and it shouldn't matter.
What does hertz mean for a tv?
The 75 Hz or 100 Hz, etc., stated in a television's technical specification, means the picture refresh rate in cycles per second. The higher the picture refresh rate, the better the display of small fast-moving objects can be. (Footballs or tennis balls in flight, etc.)
Is a risk to change the screen refresh rate in laptop from 59 to 60 Hz?
I don't think it would hurt. I changed the refresh rate of my laptop's LCD from 59 to 60 a month ago and its been working fine since. As long as 60 Hz is already shown as an option in your control panel or whatever, it should be OK.
Why does a CRT monitor flicker when shot with a digital camera where as LCD monitor doesn't?
It has to do with the refresh rate. CRTS refesh the screen at a lower rate than LCDS. Although it is possible to raise the refresh rate to a maximum of 75 HZ a second or 75 images a second the digital recorder will record at higher than this so we see the refresh occuring.
What hardware device allows for refresh rate to ensure adequate performance?
Its not the drivers that ensure the refresh rate: they simply allow you to change the refresh rate which is dependant on the supported Hz of the monitor, you will find that most current PC monitors support between 50-80Hz but with the advent of 3D gaming/TV etc.... which requires 120Hz, this is quickly changing
What is the refresh rate below which picture flicker?
It depends on the persistence of the monitor's phosphor. Typically, people can see flicker at 60 Hz, but not at 85 Hz. It also depends on whether or not the display is interlaced or not, as well as on the individual person's eyes.
What kind of input slots does a hitachi l42x02pxw lcd tv come with?
Has 3x HDMI inputs, 120 Hz refresh rate (no ghosting), multi-system, 120-240 V
