- The Marriage of Heaven and Hell by William Blake (with introduction) (youtube.com)
The following dramatisation of the Marriage of Heaven and Hell and the introductory talk were originally broadcast on BBC Radio 3. The Blake Society is grateful to the dramatiser for making this available. As with all the recordings they are available for mp3 download on the Blake Society web site at www.blakesociety.org.uk/voice.
- Silicon (Wikipedia)
Silicon is a chemical element; it has symbol Si and atomic number 14. It is a hard, brittle crystalline solid with a blue-grey metallic luster, and is a tetravalent metalloid and semiconductor. It is a member of group 14 in the periodic table: carbon is above it; and germanium, tin, lead, and flerovium are below it. It is relatively unreactive. Silicon is a significant element that is essential for several physiological and metabolic processes in plants. Silicon is widely regarded as the predominant semiconductor material due to its versatile applications in various electrical devices such as transistors, solar cells, integrated circuits, and others. These may be due to its significant band gap, expansive optical transmission range, extensive absorption spectrum, surface roughening, and effective anti-reflection coating.