Dragon's Breath behaves strangely on water
This is lycopodium powder. It's the spores of club moss and it has amazing properties
Variations In Atmospheric Oxygen Levels Shaped Earth’s Climate Through The Ages
Variations in the amount of oxygen in Earth's atmosphere significantly altered global climate throughout the planet's history. Efforts to reconstruct past climates must include this previously overloo...
Variations In Atmospheric Oxygen Levels Shaped Earth’s Climate Through The Ages
Variations in the amount of oxygen in Earth's atmosphere significantly altered global climate throughout the planet's history. Efforts to reconstruct past climates must include this previously overloo...
Surfactant
Surfactants are compounds that lower the surface tension (or interfacial tension) between two liquids or between a liquid and a solid. Surfactants may act as detergents, wetting agents, emulsifiers, f...
Surfactant - Wikipedia
Pulmonary surfactant protein D
In molecular biology, Pulmonary surfactant protein D (SP-D) is a protein domain predominantly found in lung surfactant. This protein plays a special role; its primary task is to act as a defence prote...
Pulmonary surfactant protein D - Wikipedia
Dissolution (chemistry)
Dissolution is the process by which a solute forms a solution in a solvent. The solute, in the case of solids, has its crystalline structure disintegrated as separate ions, atoms, and molecules form. ...
Dissolution (chemistry) - Wikipedia
Laplace pressure
Laplace pressure experimental demonstration with soap bubblesThe Laplace pressure is the pressure difference between the inside and the outside of a curved surface. The pressure difference is caused...
Timeline of temperature and pressure measurement technology
Timeline of temperature and pressure measurement technology. A history of temperature measurement and pressure measurement technology.
Timeline of temperature and pressure measurement technology - Wikipedia
Underwater vision
Light rays bend when they travel from one medium to another; the amount of bending is determined by the refractive indices of the two media. If one medium has a particular curved shape, it functions a...
Underwater vision - Wikipedia
Partial pressure
In a mixture of gases, each gas has a partial pressure which is the hypothetical pressure of that gas if it alone occupied the volume of the mixture at the same temperature. The total pressure of an ...
Capillary surface
In fluid mechanics and mathematics, a capillary surface is a surface that represents the interface between two different fluids. As a consequence of being a surface, a capillary surface has no thickne...
Capillary surface - Wikipedia
Buoyancy
In science, buoyancy /ˈbɔɪ.ənsi/ is an upward force exerted by a fluid that opposes the weight of an immersed object. In a column of fluid, pressure increases with depth as a result of the weight of t...
Buoyancy - Wikipedia
Atmospheric pressure
Atmospheric pressure is the force per unit area exerted on a surface by the weight of air above that surface in the atmosphere of Earth (or that of another planet). In most circumstances atmospheric p...
Atmospheric pressure - Wikipedia
Permeation
In physics and engineering, permeation (also called imbuing) is the penetration of a permeate (such as a liquid, gas, or vapor) through a solid. It is directly related to the concentration gradient o...
Permeation - Wikipedia
Fluid statics
Fluid statics or hydrostatics is the branch of fluid mechanics that studies fluids at rest. It embraces the study of the conditions under which fluids are at rest in stable equilibrium; and is contra...
Fluid statics - Wikipedia
Torricellian chamber
In cave diving, a Torricellian chamber is a cave chamber with an airspace above the water at less than atmospheric pressure. This is formed when the water level drops and there is no way for more air ...
Torricellian chamber - Wikipedia
Hydrophobe
Cutting a water droplet using a superhydrophobic knife on superhydrophobic surfacesIn chemistry, hydrophobicity is the physical property of a molecule (known as a hydrophobe) that is seemingly repel...
Hydrophobe - Wikipedia
Surfactin
Surfactin is a very powerful surfactant commonly used as an antibiotic. It is a bacterial cyclic lipopeptide, largely prominent for its exceptional surfactant power. Its amphiphilic properties help th...
Surfactin - Wikipedia
Dalton's law
In chemistry and physics, Dalton's law (also called Dalton's law of partial pressures) states that in a mixture of non-reacting gases, the total pressure exerted is equal to the sum of the partial pr...
Ambient pressure
The ambient pressure on an object is the pressure of the surrounding medium, such as a gas or liquid, which comes into contact with the object.
Within the atmosphere, the ambient pressure decrease...
Psychrometric constant
The psychrometric constant relates the partial pressure of water in air to the air temperature. This lets one interpolate actual vapor pressure from paired dry and wet thermometer bulb temperature ...
Pressure
Pressure (symbol: p or P) is the force applied perpendicular to the surface of an object per unit area over which that force is distributed. Gauge pressure (also spelled gage pressure) is the pressure...
Pressure - Wikipedia
Pressure sensor
A pressure sensor measures pressure, typically of gases or liquids. Pressure is an expression of the force required to stop a fluid from expanding, and is usually stated in terms of force per unit are...
Pressure sensor - Wikipedia
Ultrahydrophobicity
Superhydrophobic surfaces are highly hydrophobic, i.e., extremely difficult to wet. The contact angles of a water droplet exceeds 150° and the roll-off angle/contact angle hysteresis is less than 10°....
Ultrahydrophobicity - Wikipedia
Supersaturation
Supersaturation is a state of a solution that contains more of the dissolved material than could be dissolved by the solvent under normal circumstances. It can also refer to a vapor of a compound that...
Supersaturation - Wikipedia
Henry's law
In chemistry, Henry's law is one of the gas laws formulated by William Henry in 1803. It states:An equivalent way of stating the law is that the solubility of a gas in a liquid is directly proportiona...