Watch: Ventilation and COVID-19
Experiments visualising the airflow when breathing, speaking and laughing, show that wearing a mask indoors can drastically reduce the risk of transmission of airborne particles.…
Experiments visualising the airflow when breathing, speaking and laughing, show that wearing a mask indoors can drastically reduce the risk of transmission of airborne particles.…
The tail (flagellum) of the sperm does not simply push the body, but uses a rhythmical beating with pushing and fraying over a 4-beat pattern, as demonstrated in the video.…
When navigating strong crosswinds birds adjust the angle of their body into the wind, whilst keeping their head fixed on the target destination, in order to maintain forwards motion.…
Current underwater vehicles are either difficult to manoeuvre making them unsuitable for sensitive work, or are extremely expensive. Gabe Weymouth and his team at the University of Southampton are designing new underwater robots based on the Plesiosaur – the dinosaur behind the legend of the Loch Ness Monster – which are much smaller, cheaper and more energy efficient.…
From rotating impellers stirring air into a liquid, to a turbulent jet entering a moving flow, mixing processes are essential to almost every industrial application you can think of.…
When an object, such as an aircraft or submarine, moves through a fluid it generates a ‘wake’ behind it which can be used by monitoring tools to detect its size and position.…
When catching prey underwater snakes use two main techniques: the frontal strike and the lateral strike. By studying real snakes in the lab at ESPCI/MNHN, Marion Segall was able to recreate the setup using a 3D-printed snake head and laser visualisation techniques, which allowed for the forces involved in each strike to be measured.…
The manufacturing process for toothpaste involves mixing together several fluid and solid components to create the non-Newtonian polymer used to clean your teeth.…