• Fairy Lights (nanome­ter scale)

    Pic­tures Con­sid­ered #46 by Christoph — This post fea­tures elec­trons, which are among the small­est things pos­si­ble. There are, of course, even much smaller things than elec­trons but this blog keeps clear of the quan­tum realm, most of the time. Yet to make up for the elec­trons' teen­sy­ness – if they could keep still some 4×10^21 would fit into...

  • Who Pro­duced The First Ul­tra­thin Sec­tion of Bac­te­ria?

    Pic­tures Con­sid­ered #16 by Elio — It's hard to tell for sure, but it seems to have been a pair of in­ves­ti­ga­tors at the Uni­ver­sity of South­ern Cal­i­for­nia, Richard Baker and Daniel Pease, who pub­lished a pa­perin Na­ture in 1949 show­ing rather un­dif­fer­en­ti­ated sec­tions of Bacil­lus mega­terium that lack dis­cernible in­ter­nal de­tails. In­ter­est­ingly, the very next...

  • Where Art Thou, O Ri­bo­some?

    by Elio — In a re­cent post (The Age of Imag­ing), I mused about ad­vances in mi­croscopy that are rev­o­lu­tion­iz­ing our con­cept of bac­te­r­ial cell struc­ture. High on the list of amaz­ing de­vel­op­ments is cry­o­elec­tron to­mog­ra­phy (CET), a tech­nique that al­lows one to look in­side bac­te­r­ial cells. Flash-freez­ing cells at very low tem­per­a­tures...