leither
68 posts


@Dr_TheHistories @DJSnM Saw the USNavy’s float dock (Los Angelos?) in the Holy Loch in late 60’s. Quite a sight to see her lift a Polaris missile nuclear sub straight out of the water. So large it dominated the skyline. I often wonder how they supplied the overside services to those ‘beached whales’?
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The World’s Largest Floating Dry Dock Was Towed Across the Atlantic to Bermuda in 1869 -
When Britain needed a solution for ship repairs in the Atlantic, engineers in the 1860s built the largest floating dry dock ever attempted, a 380-foot iron structure weighing over 8,000 tons.
Constructed near Woolwich on the Thames, the dock was designed to lift 10,000-ton ironclads like HMS Warrior and withstand the fouling threats of Bermuda’s warm waters.
Unable to build a conventional dry dock due to porous sandstone, the British opted for mobility and scale, creating a self-contained U-shaped platform that could sink and raise vessels from the sea with ballast compartments and powerful pumps.
In June 1869, this massive dock embarked on a nearly 4,000-nautical-mile journey to Bermuda, towed in stages by Britain’s heaviest ironclads—Agincourt, Northumberland, Warrior, and Black Prince—assisted by HMS Terrible.
With closed ends to reduce drag and a sail rigged inside to capture tailwinds, the voyage reached speeds of over 6 knots.
Once in service, it supported Royal Navy operations for over thirty years before being replaced in 1906.
#drthehistories

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I made a table of reactor types with moderators across the top and coolants going down. It's not completely exhaustive, but I think it covers probably 95% of reactors built so far. In HTML form at: #types" target="_blank" rel="nofollow noopener">whatisnuclear.com/reactors.html#…

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Looks like around 04/25, Tesla has started to use the old headlight on Model 3 LRs. Not sure about SR, the performance model still uses the new matrix headlight. Maybe part shortage or cost reduction. @SawyerMerritt @NotATeslaApp @teslascope @teslainventory



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@Lenniesaurus I (think I) can interpret everything except -- what's a backie?
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Insegnanti, un concorso per voi!
Per premiare la vostra dedizione e la vostra creatività e per condividere i progetti e le buone pratiche di insegnamento incentrato attorno al tema dello spazio, affinché altre classi possano beneficiare del vostro talento e del vostro lavoro!
Esero Italia@EseroIT
Nei prossimi giorni @AstroSamantha partirà per la #MissioneMinerva per raggiungere la ISS. 🛰👩🚀🚀 Nell’occasione sarà lanciato un nuovo contest dedicato alle #scuole voluto da Samantha: INSEGNARE CON LO SPAZIO bit.ly/3k2TyYI @EseroIT @ASI_spazio @esa
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@katlinegrey Ah, that makes sense. Enjoy your visit, one day I must go there too. Hopefully there will still be some ‘artefacts’ left for me to find. 😉
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leither รีทวีตแล้ว

When Mozart was 8 this tree was over 40. When first Steam Engine was patented this tree was 50. When the Wright Brothers flew the first motorized plane this tree was 180. Now at aged 300 it was felled for a service road for HS2
Words fail me.
~ David Attenborough
#environment 🌳

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leither รีทวีตแล้ว

@polaleeks @jessphillips No intention of doing word play further with that one.
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leither รีทวีตแล้ว
leither รีทวีตแล้ว

@rbrb3 @TheStage @IrvineWelsh you can ask people to donate to mydonate.bt.com/charities/leit… many thanks
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@tom_watson please explain why you think bombing Syria is the right thing to do?
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leither รีทวีตแล้ว
leither รีทวีตแล้ว

I admire the way @SpaceflightNow reports problematic Russian missions as "botched" or "bungled" but American ones are always "accidents"!
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