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The following is a list of notable unsolved problems grouped into broad areas of physics. [1]Some of the major unsolved problems in physics are theoretical, meaning that existing theories seem incapable of explaining a certain observed phenomenon or experimental result.
Quarky & Quaysoo's Turbo Science was reviewed in the Oppenheim Toy Portfolio Guide Book where it was described as a set of "fun science problems". Noting that the problems orient toward "energy, chemistry, magnetism, and air and water pressure", the authors assessed the game as best suited for children aged 9 years and older.
This is a list of sources of light, the visible part of the electromagnetic spectrum.Light sources produce photons from another energy source, such as heat, chemical reactions, or conversion of mass or a different frequency of electromagnetic energy, and include light bulbs and stars like the Sun. Reflectors (such as the moon, cat's eyes, and mirrors) do not actually produce the light that ...
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At the closing ceremony of 21st International Junior Science Olympiad 2024, 10 students that should have received a Bronze medal, mistakenly received a Silver and 10 students that should have received a Silver, instead were given a Bronze, but due to the only difference being the outline (Outline of a Bronze medal had a "pink bronze" look, and outline of a Silver looked gray-silver colored) no ...
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A light-year is the distance light travels in one Julian year, around 9461 billion kilometres, 5879 billion miles, or 0.3066 parsecs. In round figures, a light year is nearly 10 trillion kilometres or nearly 6 trillion miles. Proxima Centauri, the closest star to Earth after the Sun, is around 4.2 light-years away. [89]
Tired light was an idea that came about due to the observation made by Edwin Hubble that distant galaxies have redshifts proportional to their distance.Redshift is a shift in the spectrum of the emitted electromagnetic radiation from an object toward lower energies and frequencies, associated with the phenomenon of the Doppler effect.