Alf Adams
Discovery 19 maj 2014 27 min
About this episode
<p>Alf Adams FRS, physicist at the University of Surrey, had an idea on a beach in the mid-eighties that made the modern internet, CD and DVD players, and even bar-code readers possible. You probably have half a dozen 'strained-layer quantum well lasers' in your home.</p><p>Image credit: Alf Adams, BBC Copyright</p>
Listen to this episode in English to learn English
Podcast episodes are one of the highest-density ways to absorb English at native pace. Alf Adams from Discovery gives you natural dialogue, unscripted speech, and vocabulary that actually appears in real conversations.
In the Clue app, every word in the transcript is tappable. Tap an unknown word, see the translation in your language instantly, and keep listening without breaking flow.