Discover and read the best of Twitter Threads about #xrays
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Daily Bookmarks to GAVNet 11/22/2021 greeneracresvaluenetwork.wordpress.com/2021/11/22/dai…
Some thought monarch butterflies may never return. They suddenly showed up in California
usatoday.com/story/news/nat…
#MonarchButterflies #migration #sightings #populations
usatoday.com/story/news/nat…
#MonarchButterflies #migration #sightings #populations
Mathematicians Prove Symmetry of Phase Transitions
quantamagazine.org/mathematicians…
#mathematics #symmetries #RotationalInvariance #UniversalProperties #PhysicalSystems #PhaseTransitions
quantamagazine.org/mathematicians…
#mathematics #symmetries #RotationalInvariance #UniversalProperties #PhysicalSystems #PhaseTransitions
.#Germanium was discovered #OnThisDay 135 years ago!
Clemens Winkler came upon this chemical element in 1886 as he was analysing the composition of argyrodite, a rare mineral found at a silver mine in Germany.
Clemens Winkler came upon this chemical element in 1886 as he was analysing the composition of argyrodite, a rare mineral found at a silver mine in Germany.
He named his new discovery after the Latin word ‘Germania’, the namesake of Germany. Fifteen years before, Dmitri Mendeleev had predicted its existence based on the gap between silicon and tin, which he noted in his newly created Periodic Table of Elements.
Highly sensitive to ionizing radiation like gamma & #Xrays, Ge plays an imptt role in the IAEA. One of the tools our inspectors use to verify enrichment levels of uranium is a detector w/ Ge crystals. These, when cooled to -140°C, can detect gamma radiation released from uranium.
We are starting our Christmas Countdown a little early this year with the A-Z of @drakonheritage #ChristmasIsComing #ChristmasCountdown
First up. A is for Archaeology. Our year has been full of many great objects from the field. Swords, brooches, lots of iron and so many coins... #ArchaeologicalConservation #Archaeology
B is for Broken. This Anglo-Saxon vessel was hit by a plough. By re-joining the fragments we can appreciate its form but I loved seeing the repairs made in the past. What a valued object this must have been to someone. What stories it could tell. #conservation #ChristmasCountdown
