Search results
Results From The WOW.Com Content Network
1905 – Albert Einstein publishes the Special Theory of Relativity, positing that space and time are not separate continua, and demonstrating that mass and energy are interchangeable. 1912 – Henrietta Leavitt discovers the period-luminosity law for Cepheid variable stars, which becomes a crucial step in measuring distances to other galaxies.
With the weapon Circe gave him, Telegonus killed his father unknowingly. Telegonus then brought back his father's corpse to Aeaea, together with Penelope and Odysseus' son by her, Telemachus. After burying Odysseus, Circe made the other three immortal. Circe married Telemachus, and Telegonus married Penelope [34] by the advice of Athena. [35]
Telemachus appears in Alfred, Lord Tennyson's 1833 poem "Ulysses", where the title speaker (based on Dante's version) expresses disappointment in his son. Telemachus is a frequent character in the poetry of Louise Glück. [16] Telemachus was the name of Carole King's cat and is pictured on the cover of her album Tapestry. [17]
1924: Edwin Hubble: the discovery that the Milky Way is just one of many galaxies; 1925: Erwin Schrödinger: Schrödinger equation (Quantum mechanics) 1925: Cecilia Payne-Gaposchkin: Discovery of the composition of the Sun and that hydrogen is the most abundant element in the Universe; 1927: Werner Heisenberg: Uncertainty principle (Quantum ...
610–546 BCE – Anaximander: Concept of Earth floating in space [1] 460–370 BCE – Democritus: Atomism via thought experiment; 384–322 BCE – Aristotle: Aristotelian physics, earliest effective theory of physics [2] c. 300 BCE – Euclid: Euclidean geometry; c. 250 BCE – Archimedes: Archimedes' principle
According to the Big Bang theory, the universe emerged from an extremely dense and hot state (singularity). Space itself has been expanding ever since, carrying galaxies with it, like raisins in a rising loaf of bread. The graphic scheme above is an artist's conception illustrating the expansion of a portion of a flat universe.
The central space was used to observe the rising of the Sun and full moon. Three markings locate sunrise at the summer and winter solstices and at the two equinoxes. Four more give the minimum and maximum declinations of the full moon: in summer, and in winter. Two measure the lengths of lunar months.
The principal change was to space leap years differently so as to make the average calendar year 365.2425 days long, more closely approximating the 365.2422-day 'tropical' or 'solar' year that is determined by the Earth's revolution around the Sun. The reform advanced the date by 10 days: Thursday 4 October 1582 was followed by Friday 15 ...