How to Order Coffee in France

How to Order Coffee in France If you think ordering coffee in a French cafà © or bar is the same as back home, you might be in for an unpleasant surprise. Ask for un cafà © and youll be presented with a tiny cup of espresso, and if you then request milk, youre likely to get a dirty look or sigh of exasperation. Whats the problem? Le Cafà © Franà §ais In France, un cafà ©, which may also be called un petit cafà ©, un cafà © simple, un cafà © noir, un petit noir, un cafà © express, or un express, is an espresso: a tiny cup of strong black coffee. Thats what the French drink, so thats what the simple word cafà © refers to. Many visitors to France, however, prefer a large cup of filtered, relatively weak coffee, which in France is known as un cafà © amà ©ricain or un cafà © filtre. If you like the taste but not the strength of espresso, order un cafà © allongà © and youll get an espresso in a large cup which you can dilute with hot water. On the other hand, if youd like something even stronger than espresso, ask for un cafà © serrà ©. In the unlikely event that you find a place serving iced coffee, it will be called cafà © glacà ©. For decaffeinated coffee, add the word dà ©ca to your order: un cafà © dà ©ca, un cafà © amà ©ricain dà ©ca, etc. Du Lait, Sil Vous Plaà ®t If you want milk, you have to order it with the coffee: un cafà © au lait, un cafà © crà ¨me, un crà ¨me - espresso with hot milk (large cup)un cappuccino - espresso with foamed milk (large cup)un cafà © noisette, une noisette - espresso with a dash of milk or a spoonful of foam (small cup) Et Du Sucre? You dont need to ask for sugar - if its not already on the bar or table, it will arrive with your coffee, in little envelopes or cubes. (If its the latter, you can do like the French and faire un canard: dip a sugar cube in your coffee, wait a moment for it to turn brown, and then eat it.) Coffee Notes At breakfast, the French like to dip croissants and day-old baguettes into cafà © crà ¨me - indeed, thats why it comes in such a large cup or even a bowl. But breakfast is the only meal at which coffee is consumed (1) with milk and (2) with food. The French drink un express after lunch and dinner, which means after- not with- dessert. French coffee is not meant to be consumed on the street, so theres no takeaway. But if youre in a hurry, drink your petit cafà © standing up at the bar, rather than sitting at a table. Youll be rubbing elbows with locals, and youll save money to boot. (Some cafà ©s have three different prices: bar, indoor table, and outdoor table.) Un cafà © lià ©geois is not a drink, but rather a dessert: a coffee ice cream sundae. (Youre also likely to encounter un chocolat lià ©geois.) Other Hot Drinks un chocolat - hot chocolateun thà © - black teaun thà © vert - green teaune tisane, une infusion - herbal tea In the mood for something different? This article has an extensive list of other drinks and their French pronunciations.

Terminal Velocity and Free Fall

Terminal Velocity and Free Fall Terminal velocity and free fall are two related concepts that tend to get confusing because they depend on whether or not a body is in empty space or in a fluid (e.g., and atmosphere or even water). Take a look at the definitions and equations of the terms, how they are related, and how fast a body falls in free fall or at terminal velocity under different conditions. Terminal Velocity Definition Terminal velocity is defined as the highest velocity that can be achieved by an object that is falling through a fluid, such as air or water. When terminal velocity is reached, the downward force of gravity is equal to the sum of the objects buoyancy and the drag force. An object a terminal velocity has zero net acceleration. Terminal Velocity Equation There are two particularly useful equations for finding terminal velocity. The first is for terminal velocity without taking into account buoyancy: Vt (2mg/Ï ACd)1/2 where: Vt is the terminal velocitym is the mass of the object that is fallingg is acceleration due to gravityCd is the drag coefficientÏ  is the density of the fluid through which the object is fallingA is the cross-sectional area projected by the object In liquids, in particular, its important to account for the buoyancy of the object. Archimedes principle is used to account for the displacement of volume (V) by the mass. The equation then becomes: Vt [2(m - Ï V)g/Ï ACd]1/2 Free Fall Definition The everyday use of the term free fall is not the same as the scientific definition. In common usage, a sky diver is considered to be in free fall upon achieving terminal velocity without a parachute. In actuality, the weight of the sky diver is supported by a cushion of air. Free fall is defined either according to Newtonian (classical) physics or in terms of general relativity. In classical mechanics, free fall describes the motion of a body when the only force acting upon it is gravity. The direction of the movement (up, down, etc.) is unimportant. If the gravitational field is uniform, it acts equally on all parts of the body, making it weightless or experiencing 0 g. Although it might seem strange, an object can be in free fall even when moving upward or at the top of its motion. A skydiver jumping from outside the atmosphere (like a HALO jump) very nearly achieves true terminal velocity and free fall. In general, as long as air resistance is negligible with respect to an objects weight, it can achieve free fall. Examples include: A spacecraft in space without a propulsion system engagedAn object thrown upwardAn object dropped from a drop tower or into a drop tubeA person jumping up In contrast, objects not in free fall include A flying birdA flying aircraft (because the wings provide lift)Using a parachute (because it counters gravity with drag and in some cases may provide lift)A skydiver not using a parachute (because the drag force equals his weight at terminal velocity) In general relativity, free fall is defined as the movement of a body along a geodesic, with gravity described as   space-time curvature. Free Fall Equation If an object is falling toward the surface of a planet and the force of gravity is much greater than the force of air resistance or else its velocity is much less than terminal velocity, the vertical velocity of free fall may be approximated as: vt gt v0 where: vt is the vertical velocity in meters per secondv0 is the initial velocity (m/s)g is the acceleration due to gravity (about 9.81 m/s2 near Earth)t is the elapsed time (s) How Fast Is Terminal Velocity? How Far Do You Fall? Because terminal velocity depends on drag and an objects cross section, there is no one speed for terminal velocity. In general, a person falling through the air on Earth reaches terminal velocity after about 12 seconds, which covers about 450 meters or 1500 feet. A skydiver in the belly-to-earth position reaches a terminal velocity of about 195 km/hr (54 m/s or 121 mph). If the skydiver pulls in his arms and legs, his cross section is decreased, increasing terminal velocity to about 320 km/hr (90 m/s or just under 200 mph). This is about the same as the terminal velocity achieved by a peregrine falcon diving for prey or for a bullet falling down after having been dropped or fired upward. The world record terminal velocity was set by Felix Baumgartner, who jumped from 39,000 meters and reached a terminal velocity of 134 km/hr (834 mph). References and Further Reading Huang, Jian (1999). Speed of a Skydiver (Terminal Velocity). The Physics Factbook. Glenn Elert, Midwood High School, Brooklyn College.All About the Peregrine Falcon. U.S. Fish and Wildlife Service. December 20, 2007. (archived)The Ballistician (March 2001). Bullets in the Sky. W. Square Enterprises, 9826 Sagedale, Houston, Texas 77089.