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Questions related from Wolfgang R. Dick
The second apparatus used by Gustav Kirchhoff and Robert Bunsen in 1860/61 when they established the foundations of scientific spectroscopy was a 4-prism spectroscope built by Carl August...
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What we see (based on Earth) as a lunar eclipse is a solar eclipse if based on the Moon. Has this been observed already directly? The page https://en.wikipedia.org/wiki/Solar_eclipses_on_the_Moon...
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Those who are interested in general questions on how science works, here is an interesting project on the merits and defects of competition in science:...
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