1. what color results when red is subtracted from white light?
when red is subtracted
from white light the color that will
result is cyan, when you combine three
primary colors of red, blue and green it gives whites, and when you combine
green and blue it gives cyan. also when you
shine green and blue on a white object it reflect cyan.
this clearly shows ; a white light without red
is cyan or in a plain terms when you subtract red from white you get cyan.
2. when something is painted red, what color is most absorbed?
when something is painted
red, simply it appears red, the color most observe are all other six colors of
light except red, object absorbed their
complimentary colors while reflecting their colors, therefore red will absorb ,
blue, green, orange, indigo and violet.
3. which warms more quickly in sunlight - a colorless or a
colored piece of glass? why?
a colorless glass, a
colorless glass will absorb all colors of light while a colored glass will reflect one color.
a colored piece glass is either blue, green, cyan etc. when light fall on green glass all other
colors are absorbed except the green color, likewise cyan or orange color
glasses, they only reflect their respective colors. while a colorless glass
will absorb all colors of white light falling on it since it no color . all
object reflect their respective colors while absorbing their complimentary colors.
therefore the colorless glass will absorb more
light than the colored glass.
4. what color light is transmitted through a piece of red glass?
the colors of light
transmitted through a piece of red glass are all complimentary colors of red in
the visible light spectrums, any other color apart from red will be transmitted
through the red glass. only the red light will be absorbed. object reflect
their respective clors but absorb any other color.
5. what color results when blue is subtracted from white light?
when blue is subtracted
from white light the color that will
result is yellow, when you combine three
primary colors of blue, blue and green it gives whites, and when you combine
green and blue it gives yellow. also when you
shine green and blue on a white object it reflect yellow.
this clearly shows ; a white light without
blue is yellow or in a plain terms when you subtract blue from white you get
yellow.
6. "how and why do objects appear different in coloured
light"
colors of object are the
colors of white light they reflect, when a white light fall a blue object al
other color is absorb while the blue part of the light is reflected and the
object depict that color.
object appear differently in
coloured object because of color combination, when blue light fall on green object it appears cyan because
the blue light from the object combine with the
green light we apply( remember the green color is part of white light
reflected by the object) and vice versa .
when red light fall on green object, the green and red combine to form
yellow ( remember the green on the
object is part of the white light reflected by the object) and vice versa.
therefore object under white
light depict the color they reflect while object under colored light depict the
color they combine with.
Attempt the
following questions using the comment box
7. how are different colours of light produced e.g. filters
8. why do opaque materials become warmer when light shines on
them?
9. why do wet objects normally look darker than the same objects
when dry
10. what do the electrons affected by illumination do when they are
made to vibrate with greater energy?
11. why does the sky sometimes appear whitish
12. why are red and cyan called complementary colors
13. when white light goes from air into water, the color that
refracts the most is
14. specular reflection is common in the light reflected from
_______.
15. a "burning glass" used to concentrate sunlight in a
tiny spot is a
16. between nuclear fission and nuclear fusion radioactive by
products are more characteristic of nuclear
17. what are the problems involved in thermonuclear bombs
18. what prompted president franklin d roosevelt to begin
researching atomic energy
19. what did fermi and szilard build underneath the squash courts at
the university of Chicago
20. enrico fermi is a name associated with which field of study?
21. opaque magenta appears to be what color under cyan light?
22. what combination of primary colors will produce the color
magenta?
23. what color of light must blue light mix with to create white
light?
24. what color would an object that reflects green and blue light
appear to be in white light?
25. when red light and green light shine on the same place on a
piece of white paper, the spot appears to be
26. when all wavelengths of the visible light spectrum are present,
the color __________ is seen. ___________ is seen when all wavelengths of light
are absent.
27. when red light and green light shine on the same place on a
piece of white paper, the spot appears to be
28. which primary pigments must be mixed to create a pale cyan green
color?
29. what is not one of the three additive complementary colors?
30. determine why a white fence appears to be white
31. infer what happens to white light when it passes through a prism
32. in a cyan banana which color waves are reflected and which are
absorbed
33. why does a white object appear white
34. why would an object appear black in color
35. what colors of the spectrum does a black road reflect
36. "how does frequency affect the color of light"
37. explain how a prism reflects colors
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