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A black and white photo of Max Planck. His arms are crossed and he is looking at the camera. Planck has a substantial mustache and his hair is receding. He is wearing a heavy, dark suit with a high-collared white shirt and a small black bowtie.

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A black and white photo of Max Planck. His arms are crossed and he is looking at the camera. Planck has a substantial mustache and his hair is receding. He is wearing a heavy, dark suit with a high-collared white shirt and a small black bowtie.
https://files.mastodon.social/media_attachments/files/111/579/479/797/114/184/original/ddd0ddddcf58e06e.jpeg

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Robert McNees (mcnees@mastodon.social)'s status on Thursday, 14-Dec-2023 15:31:52 UTC Robert McNees

Happy #QuantumDay to all who celebrate!
Max Planck presented work on blackbody radiation to the German Physical Society #OTD in 1900. His novel “quantum hypothesis” suggested that matter emits and absorbs light with frequency f only in discrete chunks of energy E=hf.
Image: AIP

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