Australia 1974 Science & Education

Hi to all

Can anyone tell me whether this stamp has many designs of the central panel. In some you can see the black outline then the brown square outline, and on the others in seems to get superimposed until it completely disappears on the last stamp.
All comments appreciated

Horamakhet

I think it is there in each case. Looks like the black was printed separately from the brown, variable alignment offsets(registry errors do they call it?)giving rise to "color shift". Note that the position of the last dot in the trajectory curve shifts exactly like the black outline.
We could start a new thread on this subject with extreme examples. Call it "shift happens"

It seems to me it depicts the `Golden Ratio` (?- am I right?). In this case even a minor fault (registry error) is irritating. It`s exact science,nevertheless this concept is used in art... Greater care should have been taken

I would like to know the The science depicted in this stamp. Measuring the rectangle on the computer screen I get 2 inches by 3.25 inches which gives a ratio of abut 1.62+ pretty close the approximate golden ratio of 1.618. The trajectory graph looks like a rocket launch trajectory, with friction drag added in, but why did they use semilog graph paper for it? The S and the vertical bar are total mysteries to me. All surely must be explained in a brochure somewhere. Have to go now but will look into it later.

EDIT -- google didn't help - I think there is no science involved -- just an artists idea of what science education is like. Please prove me wrong!

Hi Butterfly and Wadmalatz

Thank you for all the info.

I have about thirty of theses stamps and this is the only set I could make showing a colour shift.
I like your idea butterfly about "shift happens"
Regards
Horamakhet

A lot of US commemoratives suffer from pretty serious color shifts. Here is a typical example. Compare this with the Austrian stamp below. I would be interested in how different countries stack up in this regard. I think Austria would come up at or near the top in printing quality.