Boltzmann Constant T-Shirt

Constant: k_B = 1.380649 x 10^-23 J K^-1. Exact SI value.

Boltzmann constant connects temperature to energy at the particle scale. It is the bridge between thermodynamics and statistical mechanics, turning heat into a countable story about microscopic states.

A thermodynamics shirt because temperature is not just a weather report.

Product notes
- Unisex cotton T-shirt with a classic crew neckline
- Soft everyday feel with a clean, straightforward fit
- Solid colors are 100% cotton; heather colors may include polyester
- Ribbed collar, taped shoulders, and a tear-away label
- Made to order; check the size chart and variant options before ordering

Care
- Machine wash cold with similar colors
- Tumble dry low
- Do not bleach
- Iron on low heat if needed; avoid ironing directly over the print