اقتباسات من كتب مارك ميوداونك
مارك ميوداونك
له (2) كتاب بالمكتبة, بإجمالي تحميل وقراءة (2,220)
بروفسور في المادة والمجتمع في كلية لندن الجامعية.
اختير بين 100 عالم في قائمة التايمز الافتتاحية لأكثر العلماء تأثيراً في المملكة المتحدة.
يقدّم برامج وثائقية على قناة بي BBC2.
It is important when proposing marriage that the diamond you offer although physically identical to a synthetic one was forged in the depths of the Earth a billion years ago
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designed to fit in the hand giving the whole a human
A crystal of aluminum oxide is colorless if pure but becomes blue when it contains impurities of iron atoms it is the gemstone called sapphire Exactly the same aluminum oxide crystal containing impurities of chromium is the gem called ruby
Graphite was used by Edison for the first light bulb filaments because it also has a high melting point which allows it to glow white hot without melting when a high current passes through it
In fact the titanium dioxide does more than clean the concrete it can also reduce the level of nitrogen oxide in the air produced by cars like a catalytic converter Several studies have shown that this works and
It is important to note
This is essentially why gold is still valuable in the twenty first century If gathered together all the gold ever mined would fit inside a large town house
The appreciation of wine was based solely on the way it tasted The invention of drinking glasses meant that the color transparency and clarity of wine became important too We are used to seeing what we drink but this was new to the Romans and they loved it
In a very real way then materials are a reflection of who we are a multi scale expression of our human need and desires
The invention of the roll of film made possible by the use of celluloid plastic led directly to the technology of motion pictures The idea that a picture could be made to move
These atom substitutions happen naturally inside other crystals too A crystal of aluminum oxide is colorless if pure but becomes blue when it contains impurities of iron atoms it is the gemstone called sapphire Exactly the same aluminum oxide crystal containing impurities of chromium is the gem called ruby
These samurai swords were made from a special type of steel called tamahagane which translates as jewel steel
We may like to think of ourselves as civilized but that civilization is in large part bestowed by material wealth Without this stuff we would quickly be confronted by the same basic struggle for survival that animals are faced with
The Roman love of glass as a material is perhaps best demonstrated by their imaginative new uses for it For instance they invented the glass window the word means wind eye
If we can achieve this then one day whole rooms buildings perhaps even bridges may generate their own energy funnel it to where it is needed detect damage and self heal If this seems like science fiction bear in mind that it is only what living materials do already
The library is now located and maintained at the Institute of Making which is part of University College London You could rebuild our
