A photograph of Einstein from 1905-ish next to one of him from 1915-ish.
https://files.mastodon.social/media_attachments/files/109/515/782/501/861/025/original/f935b0d24611ac06.jpg
@mcnees Kind of similar to... a bright, young, slender, cheery(ish) Einstein in 1905 having explained special relativity to the world vs an older, more sombre, world-weary, slightly portly Einstein in 1915, having grappled with general relativity for 10 years!
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