On the one hand, there's the sum of the smaller motions that I made: two meters east, two meters south, two meters west; resulting in a total walk of six meters. Fraknoi and Morrison state that "In 1802, William Hyde Wollaston built an improved spectrometer that included a lens to focus the Sun's spectrum on a screen. Alan Greenspan (born March 6, 1926) is an American economist who served as the 13th chairman of the Federal Reserve from 1987 to 2006. This description resembles and generalize the initial Fresnel's formula of the classical model. Branch of dynamics concerned with studying the motion of air, "Aerodynamic" redirects here. OK, that was actually Italian. The odd thing is that sometimes we state distances as times. Avogadro's hypothesis was neglected for half a century after it was first published. Still, if you want to use x to represent distance, how could I stop you? : vii The field is at the intersection of probability theory, statistics, computer science, statistical mechanics, information engineering, Most research telescopes have spectrographs. It is equivalent to a reflection in a mirror. Supersonic flow behaves very differently from subsonic flow. [15] Otto Lilienthal, the first person to become highly successful with glider flights, was also the first to propose thin, curved airfoils that would produce high lift and low drag. [26][27], Huygens' principle as a microscopic model, Huygens' theory, Feynman's path integral and the modern photon wave function, Huygens' principle and quantum field theory, A. Fresnel, "Mmoire sur la diffraction de la lumire" (deposited 1818, "crowned" 1819), in, "Huygens's wave propagation principle corrected", The Wave Theory of Light: Memoirs by Huygens, Young and Fresnel, "Huygens' Principle as Universal Model of Propagation", "Space-Time Approach to Non-Relativistic Quantum Mechanics", https://en.wikipedia.org/w/index.php?title=HuygensFresnel_principle&oldid=1121080034, Articles with disputed statements from March 2022, Creative Commons Attribution-ShareAlike License 3.0. In 1827, William Prout classified biomolecules into their modern groupings: carbohydrates, proteins and lipids. American physical chemist Gilbert N. Lewis laid the foundation of valence bond theory; he was instrumental in developing a bonding theory based on the number of electrons in the outermost "valence" shell of the atom. Some volume units share names with mass units. Both the UK imperial and US customary gallons are now defined in terms of the liter. The viscosity and fluid friction in the air is approximated as being significant only in this thin layer. In 1825, Friedrich Whler and Justus von Liebig performed the first confirmed discovery and explanation of isomers, earlier named by Berzelius. [19][25], The traditional statement of Huygens' principle for the D'Alembertian gives rise to the KdV hierarchy; analogously, the Dirac operator gives rise to the AKNS hierarchy. One tonne of CFC-11 is equivalent to around 5,000 tonnes of CO2, leading not only to a decline in the ozone layer but also an increase in the earths overall temperature. It appears in the the title and body of Jules Verne's adventure novel, Twenty Thousand Leagues Under the Sea (Vingt mille lieues sous les mers), and refers to the distance the story's narrator traveled with Captain Nemo in the submarine Nautilus. These states are numerous and therefore have a high density of states. The set of possible photon paths is consistent with Richard Feynman's path integral theory, the paths determined by the surroundings: the photon's originating point (atom), the slit, and the screen and by tracking and summing phases. The most celebrated discoveries of Scottish chemist William Ramsay were made in inorganic chemistry. The combination of atoms into molecules leads to the creation of unique types of energetic states and therefore unique spectra of the transitions between these states. It is mainly used as a blowing agent in the foam manufacturing industries. The extraction of iron from its ore into a workable metal is much more difficult than copper or tin. Berthollet is also known for his scientific contributions to the theory of chemical equilibrium via the mechanism of reversible reactions. Scheele observed several properties of chlorine gas, such as its bleaching effect on litmus, its deadly effect on insects, its yellow-green colour, and the similarity of its smell to that of aqua regia. A major example was the ion theory of Svante Arrhenius which anticipated ideas about atomic substructure that did not fully develop until the 20th century. In the mid-twentieth century, control of the electronic structure of semiconductor materials was made precise by the creation of large ingots of extremely pure single crystals of silicon and germanium. Since the Earth is a slightly flattened sphere (an oblate spheroid) a trip around the equator is 0.2% longer than a trip around the poles. [49] In 1783, Jos and Fausto Elhuyar found an acid made from wolframite that was identical to tungstic acid. The world pretty much runs on the International System. The Huygens analysis also does not include polarization for light which imply a vector potential, where instead sound waves can be described with a scalar potential and there is no unique and natural translation between the two. Infrared absorption bands prevent heat at that wavelength from escaping the earths atmosphere. [6] He used Fresnel's theory to predict that a bright spot ought to appear in the center of the shadow of a small disc, and deduced from this that the theory was incorrect. According to the theory of aerodynamics, a flow is considered to be compressible if the density changes along a streamline. Multiples (like km for road distances) and divisions (like cm for paper sizes) are also commonly used in science. A paper that suggested a way out of this difficult situation was published as early as 1811 by the Italian physicist Amedeo Avogadro (17761856), who hypothesized that equal volumes of gases at the same temperature and pressure contain equal numbers of molecules, from which it followed that relative molecular weights of any two gases are the same as the ratio of the densities of the two gases under the same conditions of temperature and pressure. An important piece in the double helix puzzle was solved by one of Pauling's students Matthew Meselson and Frank Stahl, the result of their collaboration (MeselsonStahl experiment) has been called as "the most beautiful experiment in biology". The HuygensFresnel principle (named after Dutch physicist Christiaan Huygens and French physicist Augustin-Jean Fresnel) states that every point on a wavefront is itself the source of spherical wavelets, and the secondary wavelets emanating from different points mutually interfere. This is our position vector. What is note-worthy is that this generalized principle is applicable for "matter waves" and not for light waves any more. In 1905, Fritz Haber and Carl Bosch developed the Haber process for making ammonia, a milestone in industrial chemistry with deep consequences in agriculture. Distance is a scalar measure of the interval between two locations measured along the actualpath connecting them. In his book The Gases of the Atmosphere (1896), Ramsay showed that the positions of helium and argon in the periodic table of elements indicated that at least three more noble gases might exist. In his Methods of Chemical Nomenclature (1787), Lavoisier invented the system of naming and classification still largely in use today, including names such as sulfuric acid, sulfates, and sulfites. When integrated along all possible paths, with a phase factor proportional to the action, the interference of the wave-functions correctly predicts observable phenomena. Space appears to know the difference between left and right for some quantities. Lavoisier's Trait lmentaire de Chimie (Elementary Treatise of Chemistry, 1789) was the first modern chemical textbook, and presented a unified view of new theories of chemistry, contained a clear statement of the Law of Conservation of Mass, and denied the existence of phlogiston. No up, down, left, or right. Macquorn Rankine and Pierre Henri Hugoniot independently developed the theory for flow properties before and after a shock wave, while Jakob Ackeret led the initial work of calculating the lift and drag of supersonic airfoils. This happened because the liquid dispensed was usually water based (milk, beer, cider, wine, vinegar, spirits, medicines). Feet don't fit into furlongs in an easy to grasp way. c) both of the mentioned. Before the 20th century, chemistry was defined as the science of the nature of matter and its transformations. So which answer is correct? Understanding of supersonic and hypersonic aerodynamics has matured since the 1960s, and the goals of aerodynamicists have shifted from the behaviour of fluid flow to the engineering of a vehicle such that it interacts predictably with the fluid flow. The poundal is the unit of force when the pound is the unit of mass. The slug is the unit of mass when the pound is a unit of force. Shall I be believed? India is one of the few countries that are pioneers in the use of non-Ozone Depleting technologies and have a low Global Warming Potential (GWP). Distance and displacement are not affected by a translation of the origin. On the other hand, the end point of my walk is two meters to the south of my starting point. Wanting to make the best powder possible, du Pont was vigilant about the quality of the materials he used. It uses mathematics, physics, and chemistry in order to explain their origin and evolution.Objects of interest include planets, moons, stars, nebulae, galaxies, and comets. For instance, internal aerodynamics encompasses the study of the airflow through a jet engine or through an air conditioning pipe. What's being described in these examples is not distance, but time. While working with Marie to extract pure substances from ores, an undertaking that really required industrial resources but that they achieved in relatively primitive conditions, Pierre himself concentrated on the physical study (including luminous and chemical effects) of the new radiations. Signal timescales of interest are much larger than propagation delay of electromagnetic waves across the lumped element. The only difference is that instead of the subscript number used today (e.g., H2O), Berzelius used a superscript (H2O). But the pound, for lack of a better word, is bad. These include low momentum diffusion, high momentum convection, and rapid variation of pressure and flow velocity in space and time. Avogadro's hypothesis began to gain broad appeal among chemists only after his compatriot and fellow scientist Stanislao Cannizzaro demonstrated its value in 1858, two years after Avogadro's death. In the same year, the MillerUrey experiment demonstrated that basic constituents of protein, simple amino acids, could themselves be built up from simpler molecules in a simulation of primordial processes on Earth. It survived mainly as a poetical or rhetorical device as in Alfred, Lord Tennyson's narrative poem, The Charge of the Light Brigade. He believed that salts are compounds formed of acids and bases, and discovered that the anions in acids were attracted to a positive electrode (the anode), whereas the cations in a base were attracted to a negative electrode (the cathode). Designing aircraft for supersonic and hypersonic conditions, as well as the desire to improve the aerodynamic efficiency of current aircraft and propulsion systems, continues to motivate new research in aerodynamics, while work continues to be done on important problems in basic aerodynamic theory related to flow turbulence and the existence and uniqueness of analytical solutions to the NavierStokes equations. In the International System of Units, the derived unit for voltage is named volt. In 1883, Svante Arrhenius developed an ion theory to explain conductivity in electrolytes. Maxwells unified theory of electromagnetism. Speaking in French (as everyone there did), Cannizzaro's eloquence and logic made an indelible impression on the assembled body. Gibbs also worked on the application of Maxwell's equations to problems in physical optics. [18] Theodore von Krmn and Hugh Latimer Dryden introduced the term transonic to describe flow speeds between the critical Mach number and Mach 1 where drag increases rapidly. [93] In 1971, Yves Chauvin offered an explanation of the reaction mechanism of olefin metathesis reactions. In this case, K satisfies the conditions stated above (maximum value at = 0 and zero at = /2). During the 1850s, younger chemists, such as Alexander Williamson in England, Charles Gerhardt and Charles-Adolphe Wurtz in France, and August Kekul in Germany, began to advocate reforming theoretical chemistry to make it consistent with Avogadrian theory. This discovery formed the foundation of the modern plastics industry. In other words, gases under equal conditions of temperature and pressure react with one another in volume ratios of small whole numbers. Old habits die hard. Berzelius did not believe in the Vitalism Theory, but instead in a regulative force which produced organization of tissues in an organism. Look at the diagram below and then answer the question. Kanada, founder of the Vaisheshika philosophy, held that the world was composed of atoms as many in kind as the various elements. In 1865, Adolf von Baeyer began work on indigo dye, a milestone in modern industrial organic chemistry which revolutionized the dye industry. He believed all acids contained oxygen. With Henri Becquerel and her husband, Pierre Curie, she was awarded the 1903 Nobel Prize for Physics. He did not return to the subject of chemical bonding until 1923, when he masterfully summarized his model in a short monograph entitled Valence and the Structure of Atoms and Molecules. It indicates that early humans had an elementary knowledge of chemistry. [15] Aristotle opposed the existence of atoms in 330 BC. Frequently Asked Questions for RBI Admit Card. In antenna theory and engineering, the reformulation of the HuygensFresnel principle for radiating current sources is known as surface equivalence principle. In 1926 at the age of 39, Austrian theoretical physicist Erwin Schrdinger produced the papers that gave the foundations of quantum wave mechanics. As understanding of the nature of matter has evolved, so too has the self-understanding of the science of chemistry by its practitioners. "[37][bettersourceneeded]. As aircraft speed increased designers began to encounter challenges associated with air compressibility at speeds near the speed of sound. In Reflexions sur le Phlogistique (1783), Lavoisier showed the phlogiston theory of combustion to be inconsistent. The French Revolution forced his family to move to the United States where du Pont started a gunpowder mill on the Brandywine River in Delaware. As I trace my steps completely around the desk the distance and displacement of my journey soon begin to diverge. Working with cyanic acid and fulminic acid, they correctly deduced that isomerism was caused by differing arrangements of atoms within a molecular structure. The mass of one imperial fluid ounce of water is nearly one avoirdupois ounce by design. Call it a litre (or a liter). Arguably the first chemical reaction used in a controlled manner was fire. Reverse direction and head downriver for 4.5km. The underlying physical laws necessary for the mathematical theory of a large part of physics and the whole of chemistry are thus completely known, and the difficulty is only that the exact application of these laws leads to equations much too complicated to be soluble. Hmm, I don't know. In 1800, Volta stacked several pairs of alternating copper (or silver) and zinc discs (electrodes) separated by cloth or cardboard soaked in brine (electrolyte) to increase the electrolyte conductivity. This is more likely to be true when the flow speeds are significantly lower than the speed of sound. [3][dubious discuss]) This was one of the investigations that led to the victory of the wave theory of light over then predominant corpuscular theory. They found the same ratio for a flame and animals, indicating that animals produced energy by a type of combustion. In traditional systems theory, building blocks interact by exchanging arbitrary signals. Uses include refrigerants, blowing agents, propellants in medicinal applications and degreasing solvents. Transonic flows include both regions of subsonic flow and regions in which the local flow speed is greater than the local speed of sound. In order to get agreement with experimental results, Fresnel found that the individual contributions from the secondary waves on the sphere had to be multiplied by a constant, i/, and by an additional inclination factor, K(). Indeed, many alchemists included in their methods irrelevant information such as the timing of the tides or the phases of the moon. Lewis's theory of chemical bonding continued to evolve and, in 1916, he published his seminal article "The Atom of the Molecule", which suggested that a chemical bond is a pair of electrons shared by two atoms. In 1802, French American chemist and industrialist leuthre Irne du Pont, who learned manufacture of gunpowder and explosives under Antoine Lavoisier, founded a gunpowder manufacturer in Delaware known as E. I. du Pont de Nemours and Company. Since the displacement is measured along the shortest path between two points, its magnitude is always less than or equal to the distance. By 1000 BC, civilizations used technologies that would eventually form the basis of the various branches of chemistry. Clausius summarized the first and second laws of thermodynamics as? However, for millennia fire was seen simply as a mystical force that could transform one substance into another (burning wood, or boiling water) while producing heat and light. This work identified chemical elements as a specific type of atom, therefore rejecting Newton's theory of chemical affinities. This textbook emphasizes The foot is pretty good (since most people have two feet available for service). He also discovered that the "inflammable air" discovered by Cavendish which he termed hydrogen (Greek for water-former) combined with oxygen to produce a dew, as Priestley had reported, which appeared to be water. With Pierre-Simon Laplace, Lavoisier used a calorimeter to estimate the heat evolved per unit of carbon dioxide produced. The early theory of atomism can be traced back to ancient Greece and ancient India. Whereas, Medieval farmers experimented with chemicals using arsenic, lead on common crops. Optics is the branch of physics that studies the behaviour and properties of light, including its interactions with matter and the construction of instruments that use or detect it. In 1905, Albert Einstein explained Brownian motion in a way that definitively proved atomic theory. Her work also gives the first descriptions of the tribikos and kerotakis. The answer to this question is, "It depends". the density is assumed to be constant. Much of the early development of purification methods were described earlier by Pliny the Elder in his Naturalis Historia. In 1865, Johann Josef Loschmidt determined the number of molecules in a mole, later named Avogadro's number. In 1924, French quantum physicist Louis de Broglie published his thesis, in which he introduced a revolutionary theory of electron waves based on waveparticle duality. Kekul argued that tetravalent carbon atoms that is, carbon forming exactly four chemical bonds could link together to form what he called a "carbon chain" or a "carbon skeleton," to which other atoms with other valences (such as hydrogen, oxygen, nitrogen, and chlorine) could join. The speed of light in vacuum, commonly denoted c, is a universal physical constant that is important in many areas of physics.The speed of light c is exactly equal to 299,792,458 metres per second (approximately 300,000 kilometres per second; 186,000 miles per second; 671 million miles per hour). This material is an important component in the field of nanotechnology. In 1909, S. P. L. Srensen invented the pH concept and developed methods for measuring acidity. External aerodynamics is the study of flow around solid objects of various shapes (e.g. Agricola has been described as the "father of metallurgy".[33]. Don't answer that question. He works as a private adviser and provides consulting for firms through his company, Greenspan Associates LLC. In 1615 Jean Beguin published the Tyrocinium Chymicum, an early chemistry textbook, and in it draws the first-ever chemical equation. Aerodynamic problems can also be classified according to whether the flow speed is below, near or above the speed of sound. All directions are equivalent. This discovery overturned Lavoisier's definition of acids as compounds of oxygen. His researches on electrical discharges through a rarefied gas led him to observe the dark space around the cathode, now called the Crookes dark space. Well, both. where S describes the surface of the sphere, and s is the distance between Q and P. Fresnel used a zone construction method to find approximate values of K for the different zones,[6] which enabled him to make predictions that were in agreement with experimental results. When acetylene and oxygen are mixed in proper measures inside the hand-held torch or blowpipe, the hot flame is produced in the hand-held torch measuring 3,200 degrees Celsius. Gonzalez, J.; Aurigemma, C.; Truesdale, L. History of metallurgy in the Indian subcontinent, Alchemy and chemistry in the medieval Islamic world, ekaboron (Eb), ekaaluminium (Ea), and ekasilicon (Es), On the Equilibrium of Heterogeneous Substances, Elementary Principles in Statistical Mechanics, Timeline of chemical elements discoveries, Timeline of thermodynamics, statistical mechanics, and random processes, The Mystery of Matter: Search for the Elements (PBS film), Selected Classic Papers from the History of Chemistry, "Early Balkan Metallurgy: Origins, Evolution and Society, 62003700 BC", Neolithic Vinca was a metallurgical culture, "de Rerum Natura (On the Nature of Things)", "Chemistry in Iraq and Persia in the Tenth Century A.D.", "The diving "Law-ers": A brief resume of their lives", "Cadet's Fuming Arsenical Liquid and the Cacodyl Compounds of Bunsen", Lavoisier, Antoine (17431794) -- from Eric Weisstein's World of Scientific Biography, "Famous Scientists - Marie-Anne Lavoisier", "On some new Phenomena of Chemical Changes produced by Electricity, particularly the Decomposition of the fixed Alkalies, and the Exhibition of the new Substances, which constitute their Bases", "On a Combination of Oxymuriatic Gas and Oxygene Gas", "Recherches sur la dilatation des gaz et des vapeurs", "Essay IV. An example of a refrigerant CFC is dichlorodifluoromethane, CF2Cl2 (also known as CFC-12), which boils at -30C. Boyle also tried to purify chemicals to obtain reproducible reactions. His hypothesis was that an incoming particle would strike the nucleus and create an excited compound nucleus. The NavierStokes equations have no known analytical solution and are solved in modern aerodynamics using computational techniques. Enter the email address you signed up with and we'll email you a reset link. Let's clarify by defining each of these words more precisely. What would be a good symbol for distance? Since the meter was originally defined so that the Earth's circumference would be 40,000km, the Nautilus apparently circumnavigated the globe twice. The sum of these spherical wavelets forms a new wavefront. Since many other particles passed through the gold foil, the positive centre would have to be a relatively small size compared to the rest of the atom meaning that the atom is mostly open space. Subsonic flows are flow fields in which the air speed field is always below the local speed of sound. Further potential contributions were cut short when Lavoisier was beheaded during the French Revolution. Aerodynamicists disagree over the precise definition of hypersonic flow; a rough definition considers flows with Mach numbers above 5 to be hypersonic.[5]. [52] When the top and bottom contacts were connected by a wire, an electric current flowed through this voltaic pile and the connecting wire. Less than a century earlier, Dante Alighieri also demonstrated an awareness of this fraudulence, causing him to consign all alchemists to the Inferno in his writings. Resonances by the frequency were first characterized in mechanical systems such as pendulums which have a frequency of motion noted famously by Galileo.[20]. Quantities that are not affected by a change are said to show a symmetry. It is replaced by Kirchoffs [sic] modification which requires that both the amplitude and its derivative must be known on the adjacent surface. Laws regulating measurement were originally developed to prevent fraud in commerce. Answer: c. Explanation: These two statements were given by Clausius. In 1873, Jacobus Henricus van 't Hoff and Joseph Achille Le Bel, working independently, developed a model of chemical bonding that explained the chirality experiments of Pasteur and provided a physical cause for optical activity in chiral compounds. Take the length units and square them. Einstein stressed the importance of Broglie's work both explicitly and by building further on it. Most elements are first put into a gaseous phase to allow the spectra to be examined although today other methods can be used on different phases. The second is very good (since it's an internationally recognized unit). In casual conversation, it's often all right to state distances this way, but in most of physics this is unacceptable. [107][108][109] In 1995, Eric Cornell and Carl Wieman produced the first BoseEinstein condensate, a substance that displays quantum mechanical properties on the macroscopic scale.[110]. Spectroscopy is also used in astronomy and remote sensing on Earth. The Scottish chemist Archibald Scott Couper published a substantially similar theory nearly simultaneously, and the Russian chemist Aleksandr Butlerov did much to clarify and expand structure theory. Not all experts agree that the Huygens' principle is an accurate microscopic representation of reality. When the density is allowed to vary, the flow is called compressible. The most important among them are mauve, magenta, and other synthetic dyes, as well as the widely used drug aspirin. The measured spectra are used to determine the chemical composition and physical properties of astronomical objects (such as their temperature, density of elements in a star, velocity, black holes and more). Glenn T. Seaborg was an American nuclear chemist best known for his work on isolating and identifying transuranium elements (those heavier than uranium). the wave function in a point P can be expanded as a superposition of waves on a border surface enclosing P. Wave functions can be interpreted in the usual quantum mechanical sense as probability densities where the formalism of Green's functions and propagators apply. By mid-century, however, some leading figures had begun to view the chaotic multiplicity of competing systems of atomic weights and molecular formulas as intolerable. 2009 Apr; 19(2): 233242. The regular lattice structure of crystals also scatters x-rays, electrons or neutrons allowing for crystallographic studies. Spectroscopy is the key to understanding the atomic properties of all matter. In the work, Lucretius presents the principles of atomism; the nature of the mind and soul; explanations of sensation and thought; the development of the world and its phenomena; and explains a variety of celestial and terrestrial phenomena. Sir John Herschel and the Development of Spectroscopy in Britain. The British Journal for the History of Science, vol. Alchemy and chemistry share an interest in the composition and properties of matter, and until the 18th century they were not separate disciplines. Harmonic balance is a method used to calculate the steady-state response of nonlinear differential equations, and is mostly applied to nonlinear electrical circuits. It is composed of two copies of positive-sense single-stranded RNA that codes for the virus's nine genes enclosed by a conical capsid composed of 2,000 copies of the viral protein p24. Why not pair them up? Some examples of pseudovectors are torque, angular momentum or spin, and magnetic field. You get the idea. This list is also shorter than the previous one. The presence of shock waves, along with the compressibility effects of high-flow velocity (see Reynolds number) fluids, is the central difference between the supersonic and subsonic aerodynamics regimes. David Knight, Davy, Sir Humphry, baronet (17781829). Soon afterwards, in 1317, the Avignon Pope John XXII ordered all alchemists to leave France for making counterfeit money. Examples include the discovery of fire, extracting metals from ores, making pottery and glazes, fermenting beer and wine, extracting chemicals from plants for medicine and perfume, German theoretical physicist Werner Heisenberg was one of the key creators of quantum mechanics. Consequently, the symbolic quest for the philosopher's stone was not superseded by scientific advances, and was still the domain of respected scientists and doctors until the early 18th century. A law was passed in England in 1403 which made the "multiplication of metals" punishable by death. In a supersonic flow, however, the pressure disturbance cannot propagate upstream. His work describes the highly developed and complex processes of mining metal ores, metal extraction and metallurgy of the time. It is a frequency domain method for calculating the steady state, as opposed to the various time-domain steady state methods. 5. Ancient Sumerians used elemental sulfur to protect their crops from insects. By combining copper and tin, a superior metal could be made, an alloy called bronze. In this conception, the photon follows a path which is a probabilistic choice of one of many possible paths in the electromagnetic field. The subsequent proof of many of his predictions within his lifetime brought fame to Mendeleev as the founder of the periodic law. He ascribed this discrepancy to a light gas included in chemical compounds of nitrogen, while Ramsay suspected a hitherto undiscovered heavy gas in atmospheric nitrogen.

Introduction To Curriculum And Instruction, Construction Checklist Sample, How To Save Powerpoint With Notes On Ipad, 2020-21 Mosaic Basketball Variations, Baby Boy White Shorts 12-18 Months, Binary Ripple Counter, Project List Resume Template, Types Of Disputes In Construction Ppt, Language Features Of An Article, El Dorado Royale Restaurants Menu, Discovery Charter School Menu,