Discover and read the best of Twitter Threads about #Lasers
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#SpaceThreatsOEWG Day 3, Session 2, exchange among Member States.
Follow live with this 𧔠by @JessLuella_West
Follow live with this 𧔠by @JessLuella_West
Or watch live: media.un.org/en/asset/k1l/kâŠ
PSA: I canât believe this needs to be said, but here goes: If you fully enclose an outdoor space, it becomes an indoor space. Thatâs it, thatâs the tweet.
Change âSmokingâ to â#COVIDâ and voila, you have a safe, ventilated outdoor space (borrowed from Smoke Free UK regulations that went into affect in 2007: mikoengineering.co.uk/blog/everythinâŠ). @aoc @Ilhan @RepJimmyPanetta @KamalaHarris @BernieSanders please please spread the word.
Right, now, on to attoscience (which combines #quantum #physics with #ultrashort #lasers).
First, I dusted off an overview slide of my thesis presentation. Attoscience studies electron motion in bound states, ionization processes, charge transfer, and similar.
First, I dusted off an overview slide of my thesis presentation. Attoscience studies electron motion in bound states, ionization processes, charge transfer, and similar.
All of this happens on the time scale of attoseconds, 10â»Âčâž seconds (and sometimes femtoseconds = 10â»Âčâ” s), which is almost unimaginably fast. In the short intro podcast with @the_ScienceTalk, I explained the comparison with the age of our universe.
To measure such fast dynamics we need an equally as fast tool, which is laser pulses of a few femtosecond duration or shorter. Because a lot of energy is compressed in a very short time, the peak power of these pulses can reach terawatts (similar to nuclear power plants). đČâąïž
