Colin Grant retweetledi
Colin Grant
3.2K posts
Colin Grant
@DrColinGrant
Nano-science; Maths geek; amateur astronomer; rugby; dogs; Italian food and culture; cricket, opera, skiing, golf...These are my own views
Bishop Middleham, England Katılım Nisan 2017
1.4K Takip Edilen632 Takipçiler
Colin Grant retweetledi
This makes me feel patriotic for a country I’ve never been part of.
🌷 André Rieu - Highland Cathedral 🌷
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Colin Grant retweetledi
"Men are not made from easy victories but based on great defeats."
- Sir Ernest Shackleton
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Sun out, no finer reason for a beer and pizza cooked in outdoor oven..
First of the year..!
🍻🍕
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GB PROGRESS TO GOLD MEDAL MATCH 🤩🚀
A very tight game ends 8-5 to GB against Switzerland 🇬🇧
Saturday night… here we come!
#TeamGB | #MilanoCortina2026
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The length of the Christmas tree lights to wrap around the tree perfectly
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Colin Grant retweetledi
Colin Grant retweetledi
Researchers have recorded the briefest interval of time ever measured: 247 zeptoseconds—the duration for a photon of light to traverse a hydrogen molecule.
That's 0.000000000000000000247 seconds.A zeptosecond equals one trillionth of a billionth of a second, a realm where light, the universe's speed champion, advances mere fractions of an atomic diameter. For scale, a single second contains as many zeptoseconds as there are seconds in 31.7 trillion years—vastly exceeding the age of the cosmos.
Physicist Reinhard Dörner and colleagues at Goethe University Frankfurt achieved this using intense X-rays from Hamburg's PETRA III accelerator. They aimed at hydrogen molecules—the simplest in existence, comprising two protons and two electrons. An incoming photon struck both electrons in rapid sequence, akin to a stone skipping across water.
To resolve this fleeting event, the team employed a COLTRIMS reaction microscope, an ultra-precise instrument that tracks particle positions and momenta. By examining the interference patterns from the two expelled electrons, they pinpointed the precise lag between the photon's impact on the first electron and the second.The finding: 247 zeptoseconds.
This demonstrates that light does not illuminate a molecule instantaneously, even at this tiny scale; the delay stems from light's finite velocity of roughly 186,000 miles per second (300,000 km/s). It represents the first direct observation of light propagating inside a molecule.
By contrast, chemical reactions unfold over femtoseconds—a thousandfold longer. Zeptosecond precision opens a window into quantum timescales, where electron and photon dynamics govern matter's core behaviors.
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Colin Grant retweetledi
🗓️ On This Day in 2019…
Ben Stokes at Headingley. Needs no introduction 🔥
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An absolute legend of a human being, typifying the example of going above and beyond..
Rest well
Rest in piece
NASA@NASA
We are saddened by the passing of Jim Lovell, commander of Apollo 13 and a four-time spaceflight veteran. Lovell's life and work inspired millions. His courage under pressure helped forge our path to the Moon and beyond—a journey that continues today. go.nasa.gov/41tbrpq
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Colin Grant retweetledi
The Band of the Coldstream Guards perform "Paranoid" by Black Sabbath at Changing of the Guard today. RIP Ozzy Osbourne, the "Prince of Darkness" #guard #kingsguard #ozzyosbourne #blacksabbath #paranoid #heavymetal #rockband #london #buckinghampalace 💂🤘🏽
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