I wonder why...

[Fishingman]

I wonder why:-
Why optical mouse comes with red light? Cannot other colour meh?:rolleyes:

[Voon Chan]

Have check if the mouse is a male or female?I wonder why:-
Why optical mouse comes with red light? Cannot other colour meh?:rolleyes:

[siewjang]

I wonder why:-
Man has such a big ego!:p

[Fishingman]

I wonder why:-
Man has such a big ego!:p
To match the size of tummy so pants don't drop.:D

[athena]

I wonder why:-
Why optical mouse comes with red light? Cannot other colour meh?:rolleyes:
can...but red light is slowest mah..... red light most suitable!! wavelength @ 630nm!

sorry...redlight not slowest.....infra-red slower....

[KoChun]

To match the size of tummy so pants don't drop.:D
Woi, talking about me behind my back? :mad:

[Fishingman]

Woi, talking about me behind my back? :mad:
Sorry boss, you colleteral damage.:rolleyes:

[Alkapocino]

I wonder why:-
Why optical mouse comes with red light? Cannot other colour meh?:rolleyes:
The quality of the lens has an impact as blurry lenses distort and corrupt the image that the sensor sees, making it more difficult for the image processor. The light color can affect the contrast of the surface (red brings out details better than blue) and the image sensor is designed to respond best to a certain light wavelength as well.

For example, the Avago/Agilent ADNS-3080 optical mouse sensor has this response curve for a given wavelength of light (from page 14 of the sensor's data sheet available at the link above).


The visible light spectrum is made up of electromagnetic waves of wavelength from ~400 to ~750 nanometers (nm): Wavelength Range (nm) Color LED's Available (nm)
(100-400) Ultraviolet (UV) (none)
400-450 Violet "UV" 405
450-500 Blue "Blue" 463, 470, 472
500-570 Green "Green" 524-525
570-590 Yellow "Yellow" 588-595
590-610 Orange "Orange" 605
610-750 Red "Red" 625-630, 660
(700-1000) Infrared (IR) "IR" 850-860, 880, 940-950


So, red light at 630nm works best (and is also very efficient power-wise, so that's what is used), near infrared at 850nm would work OK, IR at 945nm (like the LED's in most VCR-type remotes) wouldn't work very well. Blue LED's at 470nm would work better than 850nm near IR, so I'm not sure why more manufacturers don't use blue.

[TingMS]

huh....

alka... you are so technical....

thought you are only very good in candles, bar, stars, doji, dojo etc....

an eye opener... :o :p

The quality of the lens has an impact as blurry lenses distort and corrupt the image that the sensor sees, making it more difficult for the image processor. The light color can affect the contrast of the surface (red brings out details better than blue) and the image sensor is designed to respond best to a certain light wavelength as well.

For example, the Avago/Agilent ADNS-3080 optical mouse sensor has this response curve for a given wavelength of light (from page 14 of the sensor's data sheet available at the link above).


The visible light spectrum is made up of electromagnetic waves of wavelength from ~400 to ~750 nanometers (nm): Wavelength Range (nm) Color LED's Available (nm)
(100-400) Ultraviolet (UV) (none)
400-450 Violet "UV" 405
450-500 Blue "Blue" 463, 470, 472
500-570 Green "Green" 524-525
570-590 Yellow "Yellow" 588-595
590-610 Orange "Orange" 605
610-750 Red "Red" 625-630, 660
(700-1000) Infrared (IR) "IR" 850-860, 880, 940-950


So, red light at 630nm works best (and is also very efficient power-wise, so that's what is used), near infrared at 850nm would work OK, IR at 945nm (like the LED's in most VCR-type remotes) wouldn't work very well. Blue LED's at 470nm would work better than 850nm near IR, so I'm not sure why more manufacturers don't use blue.

[athena]

fuhyoh also....ur knowledge over whelms me!!!

[Alkapocino]

ai yo yo...forget to put disclaimer. Adult learning, CUT & PASTE! :o

[athena]

ahha...bravo alka..bravo!!

[TingMS]

I wonder why:-
Why optical mouse comes with red light? Cannot other colour meh?:rolleyes:


maybe i know why...

to warn the cat that this mouse is artificial mouse..
if bite, gigi will rosak...

:o :p

[TK Ho]

can...but red light is slowest mah..... red light most suitable!! wavelength @ 630nm!

sorry...redlight not slowest.....infra-red slower....

Wonder why they call it red light district? :p

[shiruikage]

Wonder why they call it red light district? :p
becoz last time this district are ordered by law to gantung a led lantern at the entrance of every...brothel.

but really alka.....u know where to dig up things like dis ar. keng. very keng. but as long as i'm around, u'll always be second keng seeee. (cheh wah, follow godfather pulak!):laugh:

[Hammerhead]

I wonder why Malaysian newspapers always start an article with one story and ends the article with another story......

[shiruikage]

thats becoz this forum has influenced it in a way we call....hijacking!:laugh: and the writers donno wat they talk about in the first place.

[shiruikage]

on the other hand, i wonder why the malaysian gahmen says the malaysian economy is damn solid when international economy analyst paints a radically diferent picture. even delist 10 of malaysia's stocks from one of the influential index.

[siewjang]

I wonder why with the fuel increased and price hike, our salary is still stagnant.:(

[Fishingman]

I wonder why with the fuel increased and price hike, our salary is still stagnant.:(
Becoz the gomen is dem ****ing poor and a lot of krony's mouths to feed. Boss never increase salary coz boss dem ****ing stingy.:confused: :laugh:

[siewjang]

This is interesting topic to wonder...
An Indian discovered that nobody can create a folder anywhere named as
"con" in his computer.
This is something pretty cool...and unbelievable... At Microsoft the
whole Team, including Bill Gates, couldn't answer why this happened!
Try it out yourself...

Copy and paste

Explaination:

Con (which stands for console) is one of several reserved system names that
cannot be used in naming folders or files.
Try it. Create a new folder and name it CON (upper or lower case). You will
see that you cannot. The folder
name will keep going back to "New Folder"
Other words that cannot be used for folder or file names are:
AUX, COM1, COM2, COM3, COM4, LPT1, LPT2, LPT3, PRN, NUL

These reserved system names go all the way back to the early days of Dos where
con was used
for file operations such as copying. ie copy con c:\myfolder\myfile.txt
d:\back\myfile.txt
A conflict would occur if the folder or file was also named con.

We can do this by following method:

STEP1: goto command prompt
STEP2: type in prompt e:\> "mkdir \\.\e:\con"
STEP3: verify by typing "dir \\.\e:\con"
STEP4: delete the file or folder "rmdir \\.\e:\con"


Source from... Just Google

[shiruikage]

shit! i really cant create the folder with con!!!!!!!