pencil lead – EnLightenment https://enlightenment.hw.ac.uk DIY Smartphone Microscope Contest - BUILD IT | SEE IT | SHOW IT Fri, 20 Nov 2015 19:41:46 +0000 en-GB hourly 1 https://wordpress.org/?v=6.2.5 you can lead a horse to water but a pencil must be lead https://enlightenment.hw.ac.uk/content/you-can-lead-a-horse-to-water-but-a-pencil-must-be-lead/ Fri, 20 Nov 2015 19:41:46 +0000 http://enlightenment.hw.ac.uk/?p=2426