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  2. List of most-viewed YouTube videos - Wikipedia

    en.wikipedia.org/wiki/List_of_most-viewed...

    Specifically, to count as a legitimate view, a user must intentionally initiate the playback of the video and play at least 30 seconds of the video (or the entire video for shorter videos). Additionally, while replays count as views, there is a limit of 4 or 5 views per IP address during a 24-hour period, after which point, no further views ...

  3. Calcium bromide - Wikipedia

    en.wikipedia.org/wiki/Calcium_bromide

    Calcium bromide is the name for compounds with the chemical formula Ca Br 2 (H 2 O) x. Individual compounds include the anhydrous material (x = 0), the hexahydrate (x = 6), and the rare dihydrate (x = 2). All are white powders that dissolve in water, and from these solutions crystallizes the hexahydrate.

  4. Periodic Videos - Wikipedia

    en.wikipedia.org/wiki/Periodic_Videos

    Periodic Videos (also known as The Periodic Table of Videos) is a video project and YouTube channel on chemistry. It consists of a series of videos about chemical elements and the periodic table , with additional videos on other topics in chemistry and related fields.

  5. Jawed Karim - Wikipedia

    en.wikipedia.org/wiki/Jawed_Karim

    Jawed Karim was born on October 28, 1979, in Merseburg, East Germany, to a Bangladeshi father and a German mother. [3] His father Naimul Karim (Bengali: নাইমুল করিম) is a Bangladeshi who is a researcher at 3M, and his mother, Christine, is a German biochemistry scientist at the University of Minnesota. [4]

  6. Tris(dibenzylideneacetone)dipalladium(0) - Wikipedia

    en.wikipedia.org/wiki/Tris(dibenzylideneacetone...

    Because it is commonly recrystallized from chloroform, the complex is often supplied as the adduct [Pd 2 (dba) 3 ·CHCl 3]. [1] The purity of samples can be variable. [3] In [Pd 2 (dba) 3], the pair of Pd atoms are separated by 320 pm but are tied together by dba units. [4] The Pd(0) centres are bound to the alkene parts of the dba ligands.

  7. LA-2A Leveling Amplifier - Wikipedia

    en.wikipedia.org/wiki/LA-2A_Leveling_Amplifier

    The LA-2A had evolved from Lawrence's first leveling amplifier, the LA-1, which was favored by Gene Autry, and its successor, the LA-2, which had been adopted by CBS and RCA. In 1965, Lawrence sold Teletronix to Babcock Electronics of Costa Mesa, California, and in 1967 Bill Putnam 's company Studio Electronics (eventually renamed UREI ...

  8. Bromine compounds - Wikipedia

    en.wikipedia.org/wiki/Bromine_compounds

    Bond energies to bromine tend to be lower than those to chlorine but higher than those to iodine, and bromine is a weaker oxidising agent than chlorine but a stronger one than iodine. This can be seen from the standard electrode potentials of the X 2 /X − couples (F, +2.866 V; Cl, +1.395 V; Br, +1.087 V; I, +0.615 V; At, approximately +0.3 V ...

  9. YouTube (YouTube channel) - Wikipedia

    en.wikipedia.org/wiki/YouTube_(YouTube_channel)

    YouTube (formerly YouTube Spotlight) is the official YouTube channel for the American video-sharing platform YouTube, spotlighting videos and events on the platform. Events shown on the channel include YouTube Comedy Week and the YouTube Music Awards .