You and your two best mates are driving around in your crappy little Lada whose brakes have always been fussy. And one day they completely shit the bed and you’re. Slide rule - Wikipedia. A typical ten- inch student slide rule (Pickett N9. Enter Komputer Mangga Dua Mall Lt.5 Blok C No. 101-106 Jakarta Pusat 10730 Operasional Toko: Senin-Sabtu : 10.00-19.00 (Minggu & tanggal merah libur). T simplex trig)The slide rule, also known colloquially in the United States as a slipstick. Though similar in name and appearance to a standard ruler, the slide rule is not meant to be used for measuring length or drawing straight lines. Slide rules exist in a diverse range of styles and generally appear in a linear or circular form with a standardized set of markings (scales) essential to performing mathematical computations. Slide rules manufactured for specialized fields such as aviation or finance typically feature additional scales that aid in calculations common to those fields. At its simplest, each number to be multiplied is represented by a length on a sliding ruler. As the rulers each have a logarithmic scale, it is possible to align them to read the sum of the logarithms, and hence calculate the product, of the two numbers. It has happened: some of the last great American sweethearts, the Dodge Challenger/Charger Hellcats, are being recalled. The National Highway Traffic Safety. Q: Why didn’t the replacement battery in my non-Eco-Drive watch last as long as the first battery? The slide rule, also known colloquially in the United States as a slipstick, is a mechanical analog computer. The slide rule is used primarily for multiplication and. Download and Read Adaptive Behavior Intervention Manual Goals Objectives And Intervention Strategies For Adaptive Behavior Adaptive Behavior Intervention Vol 1 Ages 4. View and Download Citizen AD2992-59P reference manual online. Citizen AD2992-59P: Reference Guide. AD2992-59P Watch pdf manual download. The Reverend William Oughtred and others developed the slide rule in the 1. John Napier. Before the advent of the electronic calculator, it was the most commonly used calculation tool in science and engineering. The use of slide rules continued to grow through the 1. These common operations can be time- consuming and error- prone when done on paper. More elaborate slide rules allow other calculations, such as square roots, exponentials, logarithms, and trigonometric functions. Scales may be grouped in decades, which are numbers ranging from 1 to 1. Thus single decade scales C and D range from 1 to 1. A and B range from 1 to 1. In general, mathematical calculations are performed by aligning a mark on the sliding central strip with a mark on one of the fixed strips, and then observing the relative positions of other marks on the strips. Numbers aligned with the marks give the approximate value of the product, quotient, or other calculated result. The user determines the location of the decimal point in the result, based on mental estimation. Scientific notation is used to track the decimal point in more formal calculations. Addition and subtraction steps in a calculation are generally done mentally or on paper, not on the slide rule. Most slide rules consist of three linear strips of the same length, aligned in parallel and interlocked so that the central strip can be moved lengthwise relative to the other two. The outer two strips are fixed so that their relative positions do not change. Some slide rules (. A sliding cursor with a vertical alignment line is used to find corresponding points on scales that are not adjacent to each other or, in duplex models, are on the other side of the rule. The cursor can also record an intermediate result on any of the scales. Operation. Moving the top scale to the right by a distance of log. Because log. For example, to calculate 3. The answer, 6, is read off the bottom scale where 3 is on the top scale. In general, the 1 on the top is moved to a factor on the bottom, and the answer is read off the bottom where the other factor is on the top. This works because the distances from the . In such cases, the user may slide the upper scale to the left until its right index aligns with the 2, effectively dividing by 1. C- scale) and then multiplying by 7, as in the illustration below: Here the user of the slide rule must remember to adjust the decimal point appropriately to correct the final answer. We wanted to find 2. So the true answer is not 1. Resetting the slide is not the only way to handle multiplications that would result in off- scale results, such as 2. In this example, set the left 1 of C opposite the 2 of D. Move the cursor to 7 on CF, and read the result from DF. Use the CI inverted scale. Position the 7 on the CI scale above the 2 on the D scale, and then read the result off of the D scale below the 1 on the CI scale. Since 1 occurs in two places on the CI scale, one of them will always be on- scale. Use both the CI inverted scale and the C scale. Line up the 2 of CI with the 1 of D, and read the result from D, below the 7 on the C scale. Using a circular slide rule. Method 1 is easy to understand, but entails a loss of precision. Method 3 has the advantage that it only involves two scales. Division. The 2 on the top scale is placed over the 5. The 1 on the top scale lies above the quotient, 2. There is more than one method for doing division, but the method presented here has the advantage that the final result cannot be off- scale, because one has a choice of using the 1 at either end. Other operations. The most popular were trigonometric, usually sine and tangent, common logarithm (log. Some rules include a Pythagorean scale, to figure sides of triangles, and a scale to figure circles. Others feature scales for calculating hyperbolic functions. On linear rules, the scales and their labeling are highly standardized, with variation usually occurring only in terms of which scales are included and in what order: A, Btwo- decade logarithmic scales, used for finding square roots and squares of numbers. C, Dsingle- decade logarithmic scales. Kthree- decade logarithmic scale, used for finding cube roots and cubes of numbers. CF, DF. First when the user guesses a product will be close to 1. Second, by making the start . To compute x. 2. Inverting this process allows square roots to be found, and similarly for the powers 3, 1/3, 2/3, and 3/2. Care must be taken when the base, x, is found in more than one place on its scale. For instance, there are two nines on the A scale; to find the square root of nine, use the first one; the second one gives the square root of 9. For xy. When several LL scales are present, use the one with x on it. First, align the leftmost 1 on the C scale with x on the LL scale. Then, find y on the C scale and go down to the LL scale with x on it. That scale will indicate the answer. Alternatively, use the rightmost 1 on the C scale, and read the answer off the next higher LL scale. For example, aligning the rightmost 1 on the C scale with 2 on the LL2 scale, 3 on the C scale lines up with 8 on the LL3 scale. Trigonometry. The S scale has a second set of angles (sometimes in a different color), which run in the opposite direction, and are used for cosines. Tangents are found by comparing the T scale with the C (or D) scale for angles less than 4. For angles greater than 4. CI scale is used. Common forms such as ksin. For angles below 5. ST or SRT (sines, radians, and tangents) scale, or simply divided by 5. Inverse trigonometric functions are found by reversing the process. Many slide rules have S, T, and ST scales marked with degrees and minutes (e. So- called decitrig models use decimal fractions of degrees instead. Logarithms and exponentials. Some slide rules have a Ln scale, which is for base e. Logarithms to any other base can be calculated by reversing the procedure for calculating powers of a number. For example, log. C scale with 2 on the LL2 scale, finding the number whose logarithm is to be calculated on the corresponding LL scale, and reading the log. C scale. Addition and subtraction. For addition, the quotient of the two variables plus one times the divisor equals their sum: x+y=(xy+1)y. Addition and subtraction are performed by sliding the cursor left (for subtraction) or right (for addition) then returning the slide to 0 to read the result. Physical design. Scales on the most common . Pocket rules are typically 5 inches. Models a couple of metres wide were sold to be hung in classrooms for teaching purposes. Some high- end slide rules have magnifier cursors that make the markings easier to see. Such cursors can effectively double the accuracy of readings, permitting a 1. Various other conveniences have been developed. Trigonometric scales are sometimes dual- labeled, in black and red, with complementary angles, the so- called . Duplex slide rules often duplicate some of the scales on the back. Scales are often . The dual cursor versions perform multiplication and division by holding a fast angle between the cursors as they are rotated around the dial.
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