| 单词 | angle of incidence |
| 例句 | But need the angle of reflection be equal to the angle of incidence in any universe? The Invention of Science 2015-09-17T00:00:00Z Navy, detailing how the “angle of incidence” could make a bomb’s detonation more destructive. ‘The Man From the Future’ Recounts the Life of a Restless Genius 2022-02-23T05:00:00Z Solar Carve’s jagged 11-story silhouette—modeled after the sun’s angles of incidence at the site—minimizes the blockage of light to the adjacent High Line park. AD Innovator: Jeanne Gang 2014-09-15T04:00:00Z Using the law of reflection—the angle of reflection equals the angle of incidence—we can see that the image and object are the same distance from the mirror. College Physics for AP Courses 2015-08-12T00:00:00Z Direct light provides uneven heating depending on latitude and angle of incidence, with high solar energy in the tropics, and little or no energy at the poles. An Introduction to Geology 2017-01-01T00:00:00Z Shorter wavelengths/higher frequencies of light are scattered away, leaving only the longer wavelengths, colored red, able to penetrate through the length of the atmosphere at a low angle of incidence. A total lunar eclipse will turn the moon red Sunday night 2022-05-11T04:00:00Z The law of reflection states that when a ray of light reflects off a surface, the angle of incidence or the angle of approach so to speak is equal to the angle of reflection. Make The Turn Weekly Challenge #35: Super Wedge Spin-Off: The Loop 2013-10-16T04:00:00Z Brewster, startled at the novel thought, as he well might be, hesitatingly refers "to the refrangibility of rays and the angle of incidence," which is effective though glorious in its absurdity. The Contemporary Review, Volume 36, November 1879 2012-04-25T02:01:12.830Z What is the angle of incidence of the laser light when it crosses the boundary between the lake and the air? College Physics for AP Courses 2015-08-12T00:00:00Z It is only by comparing different cases of refracted light at changing angles of incidence that the common factor, the constancy of the refractive index, is disclosed. Popular scientific lectures 2012-04-24T02:00:17.273Z On examining the surface of the body obliquely at a well-pronounced angle of incidence, these elevations can be perceived by the eye. A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases 2012-03-17T02:00:54.097Z They know that light is forever the same, always obeying the angle of incidence, traveling with the same rapidity,—casting the same shadow, under the same circumstances in all worlds. The Works of Robert G. Ingersoll, Vol. 2 (of 12) Dresden Edition?Lectures 2012-02-11T03:03:51.557Z The angle of incidence or degree of wing tilt regulates the power required to a certain degree as this affects the speed of horizontal flight as well as the resistance. Aviation Engines Design?Construction?Operation and Repair 2011-12-04T03:00:04.777Z The brightest spot is the reflected beam at an angle equal to the angle of incidence. College Physics for AP Courses 2015-08-12T00:00:00Z Exactly; and now, that you hold the mirror, so that the ray falls more obliquely upon it, it is also reflected more obliquely, preserving the equality of the angles of incidence, and of reflection. Conversations on Natural Philosophy, in which the Elements of that Science are Familiarly Explained 2011-07-12T02:00:28.027Z This experiment showed that electric waves are reflected, and that, approximately at any rate, the angle of incidence is equal to the angle of reflection. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2 "Ehud" to "Electroscope" 2011-01-29T03:00:23.777Z The cap also fails as a rule to benefit the projectile when the angle of incidence is more than 30� to the normal. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 6 "Armour Plates" to "Arundel, Earls of" This angle is known as the 'angle of incidence'. The New Gresham Encyclopedia. Vol. 1 Part 1 A to Amide This is true whenever the reflecting surfaces are perpendicular, and it is independent of the angle of incidence. College Physics for AP Courses 2015-08-12T00:00:00Z If we draw a line from the point of incidence B, perpendicularly, to the mirror, it will divide the angle of incidence, from the angle of reflection, and you will see that they are equal. Conversations on Natural Philosophy, in which the Elements of that Science are Familiarly Explained 2011-07-12T02:00:28.027Z The line NC is called the sine of the angle of incidence NDC, and EM the sine of the angle of refraction MDE. Wireless Transmission of Photographs Second Edition, Revised and Enlarged 1919 Then there were ridiculous situations, such as “sitting down before a fortress,” “taking an angle of incidence,” and so on. Harper's New Monthly Magazine, No. V, October, 1850, Volume I. A well-designed wing will have a L/D ratio at an angle of incidence of 4� of about 16, i.e. the lift effect in pounds will be 16 times that of the drag. The New Gresham Encyclopedia. Vol. 1 Part 1 A to Amide It then appeared that under certain angles of incidence parts of the resulting spectra were completely polarized. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4 "Diameter" to "Dinarchus" This then is the reason why, when I throw a ball obliquely against the wall, it rebounds in an opposite oblique direction, forming equal angles of incidence and of reflection. Conversations on Natural Philosophy, in which the Elements of that Science are Familiarly Explained 2011-07-12T02:00:28.027Z From this we say that the sines of the angles of incidence and refraction have a constant proportion or ratio to one another. Wireless Transmission of Photographs Second Edition, Revised and Enlarged 1919 Then there were ridiculous situations, such as 'sitting down before a fortress,' 'taking an angle of incidence,' and so on. Maurice Tiernay Soldier of Fortune When the angle of incidence is very oblique the surface struck by the rays gets positively charged, showing that the secondary rays are more numerous than the primary. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 8 "Conduction, Electric" He drew geometrical figures on the table with the golden circle he still held, as if he would decipher from their angles of incidence the difference between love and madness. Timar's Two Worlds The first is called the angle of incidence, the other the angle of reflection; and these angles are always equal, if the bodies are perfectly elastic. Conversations on Natural Philosophy, in which the Elements of that Science are Familiarly Explained 2011-07-12T02:00:28.027Z You know that when light is reflected the angle of reflection always equals the angle of incidence? Astounding Stories of Super-Science April 1930 The angles A b N, A c O are the angles of incidence of rays A b, A c. How it Works Dealing in simple language with steam, electricity, light, heat, sound, hydraulics, optics, etc., and with their applications to apparatus in common use With smoke the angle of reflection would be equal to the angle of incidence did not the constant tendency of smoke to ascend modify this rule. Shelters, Shacks and Shanties The wing which, in order to raise that side of the machine, was presented to the wind at the greater angle of incidence often proved to be the wing which lagged and sank. The War in the Air; Vol. 1 The Part played in the Great War by the Royal Air Force In other words the angles of incidence and of reflection are equal. A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public The problem is the general relation which holds between the angles of incidence and of refraction when a ray passes from air into water or from air into glass. Progress and History Rays of light impinging on a reflecting surface are a mark that those rays will be reflected at an angle equal to the angle of incidence. A System Of Logic, Ratiocinative And Inductive They stopped to dispute furiously over angles of incidence, bellowing, "Well, look here then, you mutton-head; I'll draw it for you." The Trail of the Hawk A Comedy of the Seriousness of Life At a flying angle, that is, when the angle of incidence of the plane is small, the upward force is greatest on those parts of the plane which are immediately behind the leading edge. The War in the Air; Vol. 1 The Part played in the Great War by the Royal Air Force Sir David, somewhat startled at the originality of the idea, paused awhile, and then hesitatingly referred to the refrangibility of rays, and the angle of incidence. Myths and Marvels of Astronomy Whether the instance be a ray of light or a cannon-ball, the angle of reflection will always be found equal to the angle of incidence. The Sailor's Word-Book An Alphabetical Digest of Nautical Terms, including Some More Especially Military and Scientific, but Useful to Seamen; as well as Archaisms of Early Voyagers, etc. Once the slanting beat of the drops against the pane caught her eye, and she paused for a moment to consider their angle of incidence. Beatrice Leigh at College A Story for Girls Here, squatted on high stools, treating one another to ginger-ale, they argued over torque and angles of incidence and monoplanes vs. biplanes. The Trail of the Hawk A Comedy of the Seriousness of Life It was also the first time that a movable vertical tail had been used, in combination with wings adjustable to different angles of incidence, in controlling the balance and direction of an aeroplane. The War in the Air; Vol. 1 The Part played in the Great War by the Royal Air Force Even in gusts of 30 miles the angle of incidence did not get as low as three degrees, although the wind at this speed has more than twice the lifting power of a 21-mile wind. The Early History of the Airplane In science, the angle C, B, D, is called the angle of incidence, and D, B, A, is called the angle of reflection. The Book of Sports: Containing Out-door Sports, Amusements and Recreations, Including Gymnastics, Gardening & Carpentering It is independent of the chemical nature of the soil, but varies to a great extent according to its colour, the angle of incidence of the sun's rays, and its state of moisture. Elements of Agricultural Chemistry An important detail is the pitch of the planes, or the angle of incidence, as it is called. Opportunities in Aviation We were the first to employ wings adjustable to respectively different angles of incidence in a flying aeroplane. The War in the Air; Vol. 1 The Part played in the Great War by the Royal Air Force According to calculations, it would obtain support in a wind of 17 miles per hour with an angle of incidence of only three degrees. The Early History of the Airplane From this point the tone is reflected, not directly back, as it should be, since the angles of incidence and reflection must be equal. The Psychology of Singing A Rational Method of Voice Culture Based on a Scientific Analysis of All Systems, Ancient and Modern The tail of the monoplane had a flexible trailing edge; its angle of incidence could be varied from the pilot's seat, so that perfect longitudinal balance was attained at all loadings and speeds. The Aeroplane Speaks Fifth Edition Its angle of incidence must exactly balance the plane, and it must be bolted on so that there is no chance of it cracking off under strain. Opportunities in Aviation When the angle of incidence of the plane is small, that is, when it is only slightly tilted from its direction of motion, the greater part of the air reaction is converted into lift. The War in the Air; Vol. 1 The Part played in the Great War by the Royal Air Force At Kitty Hawk we spent much time in measuring the horizontal pressure on our unloaded machine at various angles of incidence. The Early History of the Airplane It probably has a tremendous wingspread and a very high angle of incidence to make it possible to glide at that height, and the engine and prop will be almost laughably small.” The Black Star Passes A high tail means a large angle of incidence when the machine touches ground and, with enough angle, I'll guarantee to safely land the fastest machine in a five-acre field. The Aeroplane Speaks Fifth Edition Each angle of incidence has its own figure, or coefficient, or for your better understanding, value, and the value at 45 degrees is .666. The Wonder Island Boys: The Mysteries of the Caverns It will be seen that coarse fibers have more bands than fine, and that the number increases with the angle of incidence of the light. Scientific American Supplement, No. 717, September 28, 1889 At Kitty Hawk we spent much time in measuring the horizontal pressure on our unloaded machine at various angles of incidence. The Early History of the Airplane When the angle of incidence is increased, the band moves in the direction of increasing refrangibility, and at the same time increases rapidly in width. Scientific American Supplement, No. 711, August 17, 1889 The latter has therefore lost a greater proportion of its angle of incidence, and consequently its lift, than has the main surface. The Aeroplane Speaks Fifth Edition Observation and experiment have taught us that light is always reflected in such a way that the angle of reflection equals the angle of incidence. General Science Upon the screen are photographs taken by Mr. Briscoe, a student in the laboratory at South Kensington, of the spectra of some of these fibers at different angles of incidence. Scientific American Supplement, No. 717, September 28, 1889 Then she and Aunt Blin came together at a sharp angle of incidence in the middle of the room, the kindlings scattered about the carpet; and there was the corollary to the exhortation. The Other Girls At each angle of incidence there would be a particular wave length for which the phases of the several reflections are in agreement. Scientific American Supplement, No. 711, August 17, 1889 Angle of Incidence.—One method of finding the angle of incidence is as follows: First place the aeroplane in its flying position. The Aeroplane Speaks Fifth Edition The law of reflection always holds, however, no matter what the reflecting surface is,—the angle of reflection always equals the angle of incidence. General Science Now it is apparent here that the angle of reflexion is made equal to the angle of incidence. Treatise on Light And between points 5 and 6 this light will be reflected by the cone to the eye in its greatest intensity, since at these points the angles of incidence equal the angles of reflection. The Practice and Science of Drawing If the angle of incidence be small, and if the incident light be polarized in or perpendicularly to the plane of incidence, the reflected light is polarized in the opposite manner. Scientific American Supplement, No. 711, August 17, 1889 Adjustments.—Verify the angles of incidence, dihedral, and stagger, and the rigging position of the controlling surfaces, as often as possible. The Aeroplane Speaks Fifth Edition When light passes from air into water or glass, the refracted ray is bent toward the perpendicular, so that the angle of refraction is smaller than the angle of incidence. General Science They satisfied themselves that light moved in straight lines; they knew also that light was reflected from polished surfaces, and that the angle of incidence was equal to the angle of reflection. Six Lectures on Light Delivered In The United States In 1872-1873 The angle of incidence is always equal to the angle of reflection. Fables For The Times The same law obtains in the higher as in the lower worlds; there, as here, the angle of reflection is always equal to the angle of incidence. A Textbook of Theosophy The best cambers for varying velocities, angles of incidence, and thickness of surface, are found by means of wind-tunnel research. The Aeroplane Speaks Fifth Edition When a ray of light passes from water or glass into air, the refracted ray is bent away from the perpendicular so that the angle of refraction is greater than the angle of incidence. General Science The law that the angle of incidence is equal to the angle of reflection has a bearing upon theory, to be subsequently mentioned, which renders its simple illustration here desirable. Six Lectures on Light Delivered In The United States In 1872-1873 The next law is that which determines that the angles of incidence and of reflection are equal. Scientific American Supplement, No. 595, May 28, 1887 These are called angles of incidence and reflection, and are equal. The Atlantic Monthly, Volume 06, No. 33, July, 1860 The trials substantiate this, as the angle of incidence in flying is only about one in twenty-six. Flying Machines: construction and operation; a practical book which shows, in illustrations, working plans and text, how to build and navigate the modern airship Mr Roe's triplane was chiefly interesting otherwise for the method of maintaining longitudinal control, which was achieved by pivoting the whole of the three main planes so that their angle of incidence could be altered. A History of Aeronautics This method of finding the angle of incidence must be used under every part of the lower surface where struts occur. The Aeroplane Speaks The normal on oblique surfaces, at various angles of incidence, is given by the formula P = KV2Se, which latter factor is given both for planes and for arched surfaces in the subjoined table:—. The Project Gutenberg Encyclopedia Volume 1 of 28 There was some jargon we learned at school about the angle of incidence being equal to that of reflection. At Last Means for simultaneously moving vertical rudder so as to present to the wind that side thereof nearest the side of the aeroplane having the smallest angle of incidence. Flying Machines: construction and operation; a practical book which shows, in illustrations, working plans and text, how to build and navigate the modern airship Owing to this fact, the side of the machine presenting the larger angle of incidence will tend to lift or move upward, and this upward movement will restore the lateral balance of the machine. A History of Aeronautics The best cambers for varying velocities, angles of incidence, and thicknesses of surface, are found by means of wind-tunnel research. The Aeroplane Speaks Having thus determined the weight, the surface, the angle of incidence and the required seed for horizontal support, the next step is to calculate the power required. The Project Gutenberg Encyclopedia Volume 1 of 28 The angle of incidence is 30� in each case; also the specific gravity of each substance is given. Thomas Hariot, the Mathematician, the Philosopher and the Scholar One second the bird is bending its wings, altering the angle of incidence; the next it is lifting or depressing one wing at a time. Flying Machines: construction and operation; a practical book which shows, in illustrations, working plans and text, how to build and navigate the modern airship While at Kitty Hawk we spent much time in measuring the horizontal pressure on our unloaded machine at various angles of incidence. A History of Aeronautics In B, C, and D the surfaces are shown with angles of incidence decreasing to nothing, and you will note that the C.P. moves forward with the decreasing angle. The Aeroplane Speaks The latter varies with the angle of incidence. The Project Gutenberg Encyclopedia Volume 1 of 28 Asks questions as to how he defines the angles of incidence and refraction; and goes on to discuss the reasons of refraction. Thomas Hariot, the Mathematician, the Philosopher and the Scholar All successful aeroplanes thus far have maintained lateral balance by the principle of changing the angle of incidence of the wings. Flying Machines: construction and operation; a practical book which shows, in illustrations, working plans and text, how to build and navigate the modern airship The engine drove a two-bladed tractor screw of 6 feet 7 inches diameter, and the angle of incidence of the wings was 20 degrees. A History of Aeronautics The angle of incidence is best described as the angle the neutral lift line makes with the direction of motion relative to the air. The Aeroplane Speaks The weight and the surface being determined, the three most important things to know are the angle of incidence, the ``lift,'' and the required speed. The Project Gutenberg Encyclopedia Volume 1 of 28 The angle of incidence equals the angle of reflection. The War Terror The law, as Descartes expressed it, states that the sine of the angle of incidence bears a fixed ratio to the sine of the angle of refraction for any given medium. A History of Science — Volume 2 That the ratio of drift to lift in well-shaped surfaces is less at angles of incidence of 5 degrees to 12 degrees than at an angle of 3 degrees. A History of Aeronautics Warp, to—To distort a surface in order to vary its angle of incidence. The Aeroplane Speaks The word incidence really means, a falling upon, or against; and it will be seen, therefore, that the angle of incidence means the tilt of the planes in relation to the air which strikes it. Aeroplanes As already explained, cambered surfaces are used, and these are longitudinally unstable at those angles of incidence producing a reasonable lift-drift ratio, i.e., at angles below: about 12 degrees. The Aeroplane Speaks He could not well fail to know that different mediums refract light differently, and that for the same medium the amount of light valies with the change in the angle of incidence. A History of Science — Volume 2 Having got his balance, he obtained a lifting angle of incidence on the wings by means of his levers, and released the hook that secured the machine, gliding off over the quarry. A History of Aeronautics High tails mean a large angle of incidence when the machine touches ground and, with enough angle, I'll guarantee to safely land the fastest machine in a five-acre field. The Aeroplane Speaks If, for instance, an aeroplane is moving through the air with the front margin of the planes higher than their rear margins, it is said to have the planes at a positive angle of incidence. Aeroplanes If the rear margins are higher than the front, then the planes have a negative angle of incidence. Aeroplanes When a plane is forced through the air at any angle, a rarefied area is formed on the side which is opposite the one having the positive angle of incidence. Aeroplanes In fact, in all machines, at high flight, the tail is elevated so as to give little positive angle of incidence to the supporting planes. Aeroplanes |
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