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Vor einem Tag · Birth control, also known as contraception, anticonception, and fertility control, is the use of methods or devices to prevent unintended pregnancy. [1] Birth control has been used since ancient times, but effective and safe methods of birth control only became available in the 20th century. [2] Planning, making available, and using human birth ...
Vor 2 Stunden · Stability of LSD in transparent containers under light was dependent on the distance between the light source and the samples, the wavelength of light, exposure time, and the intensity of light. After prolonged exposure to heat in alkaline pH conditions, 10 to 15% of the parent LSD epimerized to iso-LSD. Under acidic conditions, less than 5% of the LSD was converted to iso-LSD. It was also ...
Vor 2 Stunden · Hi everyone - giving Meetup another go! I've been running these outdoor watercolour events on Eventbrite so far which has been great - but I feel like back in the day when I used to be an attendee on Meetup it was such a great way to meet people. 📣 These classes are weather dependent & are scheduled a few days before.
Vor 2 Stunden · Europa / jʊˈroʊpə / ⓘ, or Jupiter II, is the smallest of the four Galilean moons orbiting Jupiter, and the sixth-closest to the planet of all the 95 known moons of Jupiter. It is also the sixth-largest moon in the Solar System. Europa was discovered independently by Simon Marius and Galileo Galilei [2] and was named (by Marius) after ...
Vor einem Tag · Sigmund Freud (/ f r ɔɪ d / FROYD, German: [ˈziːkmʊnt ˈfrɔʏt]; born Sigismund Schlomo Freud; 6 May 1856 – 23 September 1939) was an Austrian neurologist and the founder of psychoanalysis, a clinical method for evaluating and treating pathologies seen as originating from conflicts in the psyche, through dialogue between patient and psychoanalyst, and the distinctive theory of mind and ...
Vor einem Tag · Western Front; Part of the European theatre of World War I: Clockwise from top left: Men of the Royal Irish Rifles, concentrated in the trench, right before going over the top on the First day on the Somme; British soldier carries a wounded comrade from the battlefield on the first day of the Somme; A young German soldier during the Battle of Ginchy; American infantry storming a German bunker ...
Vor einem Tag · e. In physics, a redshift is an increase in the wavelength, and corresponding decrease in the frequency and photon energy, of electromagnetic radiation (such as light ). The opposite change, a decrease in wavelength and increase in frequency and energy, is known as a blueshift, or negative redshift. The terms derive from the colours red and ...
