"Prankish" Natural Recordings by Native Speakers
Amusingly mischievous or playfully troublesome.
The Prandtl number is a dimensionless number used in the study of fluid dynamics and heat transfer. It is defined as the ratio of momentum diffusivity to thermal diffusivity. In other words, it's a measure of the ratio of the transport of momentum to the transport of heat in a fluid. It's named after the German-American physicist Ludwig Prandtl, who first introduced it in the late 19th century.<br><br>A higher Prandtl number indicates that momentum diffusivity is greater than thermal diffusivity, meaning that momentum is transferred more easily through the fluid than heat, while a lower Prandtl number indicates the opposite.<br><br>The Prandtl number is an important quantity in many engineering and scientific applications, including:<br><br> Boundary layer theory: The Prandtl number is used to determine the thickness of the boundary layer in fluids.<br> Heat transfer calculations: The Prandtl number is used to determine the rate of heat transfer in a fluid.<br><br>Typical values of the Prandtl number include:<br><br> Air: 0.71 (at STP)<br> Water: 7 (at 20°C)<br> Mercury: 0.014 (at 20°C)<br><br>It's worth noting that the Prandtl number is not unitless. Its units are (dynamic viscosity / density) / thermal diffusivity.
A prang is a friendly or minor collision between two vehicles, especially in Southeast Asia. It is often used in the informal setting to describe a fender bender or a soft crash, where the damage is minimal and no one is seriously injured.
A prank is a joke or trick played on someone, typically in a lighthearted or playful manner. It often involves a trick or deception that is not meant to be mean-spirited, but rather to bring amusement to the pranking party.
To be pranked means to be tricked or deceived in a humorous or playful way, often in a clever or imaginative manner, usually for entertainment or amusement. This can involve being the victim of a joke, a trick, or a hoax, and it can be done by someone who is trying to play a joke on the person being pranked.
A person who enjoys playing tricks on others, often in a lighthearted or playful way, or an individual who regularly indulges in such behavior, often in a mischievous or joking manner.
The term "pranksterism" refers to the act or habit of playing practical jokes or hoaxes on others, often in a lighthearted or playful manner. A prankster is someone who enjoys playing tricks or causing mischief in a friendly and harmless way.<br><br>In a broader sense, pranksterism can also connote the act of challenging authority, societal norms, or conventions by subverting expectations and pushing boundaries. This can be seen as a form of satire, social commentary, or even a means of highlighting flaws or injustices in a playful way.<br><br>The term is derived from the word "prankster," which originated in the mid-18th century as a colloquial alternative for "monkey wrench," referring to a person's disturbing tendency to pull the plug or cause trouble. Over time, the term evolved to encompass a range of playful and mischievous behaviors, often characterized by a quick wit, charm, and a willingness to polarize opinions.
People who play tricks or jokes on others with the intention of amusing or surprising them.
A rare and beautiful word!<br><br>Praesiolite is a gemstone. It is a type of tavicolite, a metamorphic mineral composed of beryl and manganese phosphate. The praseolite is a rare, blue-green variety of beryl, known for its vibrant, turquoise-like color and excellent luster.
The Prasinophyceae is a class of green algae, primarily characterized by the presence of chlorophyll a and chlorophyll b, and also sometimes carotenoids, which gives them a green color. These algae are simple, usually unicellular organisms found in aquatic environments.<br><br>The name "Prasinophyceae" comes from the Greek word "prasinos," meaning green. It is often associated with green algae found in freshwater, brackish, or marine waters.<br><br>The Prasinophyceae is not a single, fixed taxonomic group but rather a diverse class within the green algae that can exhibit a range of growth forms and reproductive strategies, such as vegetative growth and sexual reproduction through the production of planozygotes or both.<br><br>These organisms are significant in aquatic ecosystems due to their role in the food chain.
A prasinophyte is an ancient group of algae that belong to the green algae (Chlorophyta) phylum. They are single-celled or colonial, resembling green flagellates. Prasinophytes typically have paired flagella, a single chloroplast with pyrenoids for starch storage, and pigmentation usually confined to chlorophyll a.