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Fine-Structure Constant 1/137 T-ShirtConstant: alpha approx 1 137. 035999177. Yes, we know. But nobody wants a 1 137. 035999177 shirt, right? The fine structure constant measures the strength of the electromagnetic interaction between charged particles and light. Because it has no units, its near 1 137 value feels unusually bare: a pure number sitting inside atomic spectra and quantum electrodynamics. Product notes Unisex cotton T shirt with a classic crew neckline Soft everyday feel

The speed of light sets the conversion between space and time in relativity

and all that

drilling fluids

Its signature use is atomic clocks

yttrium is a materials-science workhorse

the Swedish village associated with several rare-earth element discoveries

Climate Action Yesterday is a blunt climate shirt about charts

meaning little silver

Its signature use is making circular relationships read in full turns rather than half turns

Its signature use is lithium-ion batteries

built for clean print color

It becomes political when evidence threatens somebody’s story