Dianna Cowern

Dianna Cowern is a science communicator who created the Physics Girl YouTube channel, which covers physics, astronomy, and science through demonstrations, field experiments, and interview-style content. She holds a physics degree from MIT and worked in industry before transitioning full-time to science communication. The channel launched in 2012 and later entered a production partnership with PBS Digital Studios, which expanded its distribution. Physics Girl has accumulated several million subscribers.

The channel's approach emphasizes outdoor and large-scale demonstrations over classroom-style explanation, covering topics such as fluid dynamics, electromagnetism, and astrophysics. Cowern has conducted experiments in public spaces and collaborated with researchers at universities and laboratories to produce content connected to active science. Her content has been cited as a resource for secondary school science education, and the channel is frequently mentioned in discussions of women in science communication.

Since late 2023, Cowern has been publicly ill with Long COVID, a condition that has significantly impaired her ability to function and left her bedridden for extended periods. She and her family have used her public platform to document this experience and advocate for Long COVID research and awareness. The channel has been on extended hiatus as a result. The openness with which she has discussed her illness has drawn substantial public attention to Long COVID as a serious condition affecting previously healthy individuals.

Physics Girl's publishing record was somewhat uneven prior to the illness, with periods of infrequent output. This is reflected in the channel's consistency metrics. Cowern's work has been recognized within the science communication community for its visual creativity and its emphasis on making physics accessible without oversimplification. The channel remains a reference point in discussions of how science education content is produced for digital platforms.