March 8, 2009
Lunar Crater
PlayThis man is a famous physicist and chemist. His laws in physics and chemistry are well known, but he made significant contribution to this other field, where they “test” people using images like 2. Who is he? What is 2 used to test for?
1. 
2. 
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Answer: John Dalton and the test for color-blindness.
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March 8th, 2009 at 10:59 pm, GMT +0000 ( 1236553152 )
Dalton, Colorblindness
March 8th, 2009 at 11:06 pm, GMT +0000 ( 1236553614 )
john dalton and colour blindness
wiki claims that there is a 44 or a 49 in that other image but by jove i missed it. now you guys are scaring me…
March 8th, 2009 at 11:10 pm, GMT +0000 ( 1236553855 )
John Dalton and color blindedness (daltonism).
March 8th, 2009 at 11:34 pm, GMT +0000 ( 1236555254 )
John Dalton.
March 8th, 2009 at 11:40 pm, GMT +0000 ( 1236555613 )
John Dalton
and test for deuteroanopia(a type of color blindness)
http://en.wikipedia.org/wiki/John_Dalton
March 9th, 2009 at 12:17 am, GMT +0000 ( 1236557825 )
Pic 1 – John Dalton.
Pic 2 – Image is used to test colour blindness.
Dalton was known for his research into colour blindness and the condition is also referred to as Daltonism.
March 9th, 2009 at 12:42 am, GMT +0000 ( 1236559332 )
John Dalton, Color Blindness
March 9th, 2009 at 1:31 am, GMT +0000 ( 1236562289 )
John Dalton, colour blindness
March 9th, 2009 at 1:34 am, GMT +0000 ( 1236562448 )
1) John Dalton
published the first paper on
2) Color Blindness
March 9th, 2009 at 2:21 am, GMT +0000 ( 1236565293 )
John Dalton and Colour Blindness/Daltonism/Deuteranopia
March 9th, 2009 at 2:36 am, GMT +0000 ( 1236566196 )
John Dalton,Colour Blindness
March 9th, 2009 at 3:17 am, GMT +0000 ( 1236568620 )
John Dalton. Color Blindness.
March 9th, 2009 at 4:11 am, GMT +0000 ( 1236571917 )
John dalton
Test for Color blindness..
March 9th, 2009 at 4:37 am, GMT +0000 ( 1236573435 )
John Dalton of course! The likes of 2 are used for testing people for Daltonism or colourblindedness.
March 9th, 2009 at 4:38 am, GMT +0000 ( 1236573515 )
1.John Dalton
2.To test color blindness(Daltonism)
March 9th, 2009 at 8:59 am, GMT +0000 ( 1236589148 )
# John Dalton(1)
image shows a number 44 or 49, but someone who is deuteranopic may not be able to see it(2)
Color Blindness is named after him
March 9th, 2009 at 9:23 am, GMT +0000 ( 1236590634 )
John Dalton.
Deuternopia.(color blindness in general)
March 9th, 2009 at 9:27 am, GMT +0000 ( 1236590874 )
John Dalton and his test for colour blindness.
March 9th, 2009 at 10:40 am, GMT +0000 ( 1236595247 )
john dalton, colour blindness
March 9th, 2009 at 10:43 am, GMT +0000 ( 1236595427 )
john dalton – to test for color blindness
March 9th, 2009 at 11:34 am, GMT +0000 ( 1236598466 )
John Dalton .
Color blindness used to be called Daltonism after him.
He’s also known for gas laws,and his work on Atomic weights.
March 9th, 2009 at 12:44 pm, GMT +0000 ( 1236602697 )
john dalton n colour blindness test
March 9th, 2009 at 1:21 pm, GMT +0000 ( 1236604863 )
John Dalton – Color blindness test or test for Daltonism (Deuteranopia)
March 9th, 2009 at 2:05 pm, GMT +0000 ( 1236607525 )
John Dalton
March 9th, 2009 at 2:08 pm, GMT +0000 ( 1236607718 )
A more complete answer (didnt read the question completely the first time ; )
1) John Dalton
2) 2 is used to test colour blindness, more specifically deuteroanopia.
March 9th, 2009 at 4:50 pm, GMT +0000 ( 1236617428 )
1. John Dalton 2. image used to test color blindness
March 9th, 2009 at 7:26 pm, GMT +0000 ( 1236626812 )
John Dalton – Test for Color Blindness…
March 9th, 2009 at 7:53 pm, GMT +0000 ( 1236628393 )
John Dalton ,color blindness test?
March 9th, 2009 at 8:00 pm, GMT +0000 ( 1236628828 )
deuteroanopia test :P
March 11th, 2009 at 11:06 am, GMT +0000 ( 1236769575 )
it is interesting the number of people who spell colour color