Radiate Positivity T-shirt

Because life’s too short to be ionizing.
This shirt is your daily reminder to glow with good vibes — not gamma rays. Whether you’re in the lab, the lecture hall, or just navigating the chaos of the day, “Radiate Positivity, Not Gamma” is the perfect blend of wholesome energy and nerdy charm.

Ideal for nuclear engineers, STEM students, radiology techs, and science fans with a bright sense of humor.

This t-shirt is everything you've dreamed of and more. It feels soft and lightweight, with the right amount of stretch. It's comfortable and flattering for all.

• 100% combed and ring-spun cotton (Heather colors contain polyester)
• Fabric weight: 4.2 oz./yd.² (142 g/m²)
• Pre-shrunk fabric
• Side-seamed construction
• Shoulder-to-shoulder taping


This product is made especially for you as soon as you place an order, which is why it takes us a bit longer to deliver it to you. Making products on demand instead of in bulk helps reduce overproduction, so thank you for making thoughtful purchasing decisions!

Size guide