Swimming underwater reduces drag so much there are rules against doing it for too long. But the best swimmers make the most of what’s allowed.
Opening all windows, or one front and one rear window, increases the amount of airflow in the car, reducing the risk of airborne transmission.
Sisoje/E+ via Getty Images
Keeping windows open while driving at a moderate speed can increase airflow inside the cabin of the car, but which ones should you keep open?
Aerosols are made up of tiny respiratory droplets suspended in the air.
Jeffrey Coolidge via Getty Images
More than 200 scientists wrote to the World Health Organization, warning about aerosol transmission of the coronavirus.
Knowing how fluids move can help us understand virus transmission better.
Stock image/Getty Images
Fluid mechanics can be applied to the transport of respiratory diseases such as COVID-19.
Measuring in at 10,159 miles (16,350 kilometers) in width (as of April 3, 2017) Jupiter’s Great Red Spot is 1.3 times as wide as Earth.
Little bits of Jupiter’s Great Red Spot seem to be flaking off. Is it a sign of the demise of this enigmatic red cloud, or just a consequence of atmospheric chaos we can’t see from above?
The ripple effect.
The simple experiment of throwing a rock into water actually reveals some fundamental rules of physics.
Here’s the fossil… what can you tell about how this animal lived?
Matteo De Stefano/MUSE-Science Museum
With no identifiable body parts, it’s hard to know how these fossilized creatures lived. A new approach models how the ocean’s water would interact with their unique shapes – hinting at their lifestyle.
Defecation duration is surprisingly similar throughout the mammal world.
Elephant image via www.shutterstock.com.
New parenthood got our fluid dynamics experts thinking about what ends up in the diaper. They headed to the zoo and the lab to come up with a cohesive physics story for how defecation works.
Mathematicians make a splash with new theory that could lead to breakthroughs in 3D printing, climate science and forensics.
Gotcha, five times faster than the blink of an eye.
Candler Hobbs/Georgia Tech
How do a frog’s tongue and saliva work together to be sticky enough to lift 1.4 times the animal’s body weight? Painstaking lab work found their spit switches between two distinct phases to nab prey.
Filter-feeding fish have had 150 million years to improve filtration.
Rob Holm / USFWS
Even the best engineered filters get clogged eventually. Fish mouths have evolved structures that create unique fluid dynamics patterns that solve that problem.
A juvenile male black-throated mango hummingbird (
Anthracothorax nigricollis) extending his tongue after drinking nectar.
By filming these ultra-speedy feeders at transparent fake flowers, researchers finally figured out how hummingbirds slurp up the nectar so fast.
Observing the foreflipper clap.
The way sea lions swim is unique among fish and marine mammals. Their technique provides a biomechanical model to design agile underwater vehicles… but first we have to figure out how they do it.
Dr Andrew Stephenson and Dr Anthony Jacko examine the longest running laboratory experiment in the world.
Something strange is happening within the world-famous pitch drop experiment with the latest drop forming much faster than the last couple of drops. There have been nine drops so far and all attention…
Better than your refrigerator.
How can you turn lukewarm lager to ice-cold beer in under a minute? A startup has developed a nifty gizmo which does just that, saving both energy and embarrassment at parties. Manufacturer Enviro-Cool…
The ‘deep-catch’ stroke, which pulls through water like a boat paddle, is the most efficient swimming stroke. High-precision…
The drag acting on hot bodies moving through liquid can be reduced by up to 85%, potentially doubling their speed. The discovery…