The study of fluids and physics with buoyancy involves some important principles: buoyancy, fluid motion, fluid resistance, and a Reynolds number.
The hydrodynamics of buoyant objects at the air-water interface (aka, the science of skipping rocks).
Tag: water
This loofah-inspired, sun-driven gel could purify all the water you’ll need in a single day.
Researchers have found a solution inspired by loofah sponges that could purify enough water to meet a person’s daily needs, even on cloudy days.
Study finds drought in US Southwest is the worst megadrought in more than 1,200 years.
A new study published today confirms the severe drought in the Western U.S. is the worst seen in at least 1,200 years – and likely much longer.
In a portending sign of the times, Wall Street is now betting on the future of water supplies.
Future contracts for water will appear on the markets for the first time in history. Future contracts are tied to the spot price of water and let investors bet on the price of water as the value of the precious resource goes up and down due to climate change.
This label on a sparkling water bottle.
How to stay clean (and healthy) in the wilderness – even if no water is available.
Hygiene is a typical routine for most people but cleanliness in the wilderness is sometimes ignored by even the most devout germaphobe. In a wilderness survival setting, we tend to focus on food and water and forget that poor hygiene can lead to infestations, infections, and skin disease. Even eating and drinking with dirty hands…
How to stockpile water in an emergency – how to treat and store water for long-term use
According to U.S. government guidelines, for emergencies, it is recommended you store at least one gallon of water per person. About ¾ of the water would be used for consumption with the remainder used for sanitation. How do you stockpile water and ensure it remains safe to drink in an extended emergency?
And then there’s this car that never has to worry about overheating.
How to make a basic clean earth filter (filtering water with gravel and dirt)
The most basic of water filters is the clean earth filter. Although not ideal for producing crystal clear clean drinking water, it does have the added advantage of filtering out some components that other filters are unable to remove. For instance, a basic clean earth filter can filter out 99% of radioactivity in water making…
Ancient Amazon legend proven true after discovery of mythical boiling river deep in Amazon rainforest.
When Spanish conquistadors returned from the Amazon following their quest for mythical gold, they spoke of nightmarish conditions – rampant disease, strange poisonous plants, huge man-eating snakes – and a river that boils from below “as if lit by a great fire”. Scientists have long said the story about a boiling river was nothing more…
