Since joining Radford in 2022, Dr Tyson Peppler has brought not only a deep passion for physics but also a thoughtful, philosophical approach to teaching. With a doctorate in physics, a master’s in teaching and a background in rural education, he blends academic rigour with real-world perspective. Whether he’s explaining the mysteries of quantum fluctuations or sharing the story behind his now-signature tweed hat and beard, Dr Peppler reminds us that science isn’t just about formulas – it’s about curiosity, service and the joy of discovery.

What brought you to Radford and what were you doing previously?

My move to Radford felt somewhat providential. I had just relocated to Canberra with my partner, who had secured a role in federal health, and Radford happened to be looking for a physics teacher. Prior to that, I was teaching at a rural school in the small town of Birchip, Victoria, while completing my master’s through the University of Melbourne’s Teaching Internship Program.

You have a doctorate in physics. What inspired your love of the subject?

As a student, I was drawn to physics because of its ability to distil reality into something logically coherent – the "why" and the "how" behind what we see. Physics offers answers to the biggest questions and explores the broadest horizons – its scope encompasses the entirety of nature.

What drew you to a career in teaching over research?

I’ve always loved learning, so teaching was a natural consideration. It’s also deeply rewarding as a service to the community – preparing the next generation with the knowledge we’ve accumulated so far. While research is also vital, I felt content with my contributions in that area. Teaching, for me, offers a greater sense of purpose and long-term stability.

If you had the opportunity to share one thing about physics with the world, what would it be?

I’d highlight the fundamental nature of physics – how it underpins our understanding of the world and enables technologies that reduce suffering and improve lives. Many breakthroughs, especially in medicine, often originate from the blue-sky curiosity of physicists. That said, it’s crucial we use this knowledge responsibly. With great power comes equally great ethical responsibility.

Your beard and hat have become your trademark. Is there a story behind them and have you ever considered sacrificing your beard for the World's Greatest Shave?

The hat is from a hat maker in Gordon, Victoria, where a former physics colleague worked part-time. It's English tweed, very comfortable and perfectly suited to Canberra winters. The beard? Well, that’s the source of my power. If I were to part with it, the price would need to exceed inflation – indexed to housing prices – year-on-year. An impossible feat? Never say never.

People might be surprised to learn that…

Empty space isn’t truly empty. It’s a seething sea of virtual particles and antiparticles, constantly popping in and out of existence, borrowing energy from the vacuum before annihilating one another. These are called quantum fluctuations.