Planck Relation Snapback Hat with Golden Embroidery

One of quantum physics’ defining equations, worn without explanation. Planck’s relation, E = hν, connects the energy of a photon to its frequency and helped establish the quantum description of light.

This Snapback Hat pairs that Expression with golden embroidery and a structured, high-profile classic fit with a flat brim and adjustable snap closure.

• 80% acrylic, 20% wool
• Green Camo: 60% cotton, 40% polyester
• Structured, 6-panel, high-profile
• 6 embroidered eyelets
• Plastic snap closure
• Green undervisor
• Head circumference: 21⅝″–23⅝″ (54.9 cm–60 cm)

NerdWear. Wear What You Know.

Made to order: Each NerdWear hat is produced specifically for your order using a pre-designed NerdWear Expression and predetermined embroidery specifications. Because your hat is embroidered on demand rather than pulled from mass-produced warehouse inventory, fulfillment may take a few extra days before it ships. Producing only what is ordered helps reduce excess inventory, waste, and unnecessary production costs, which helps us avoid passing those added expenses on to the buyer. Each hat is still produced to the design and specifications established for that product.