And observe that they do not state the actual values of L and y; the value of y is expressed in terms of L. ). Both static and dynamic modulus methods are covered in this Guide, presented in separate sections with details on the different test methods and on practical issues affecting the quality and accuracy of the measurement. Today's classroom version of the same experiment is typically performed using a laser beam as the source. Aim of this experiment is to find the Young's modulus of the given material by uniform bending using pin and microscope method. In non uniform bending, the beam (meter scale) is supported symmetrically on two knife edges and loaded at its centre. The slits are separated by 0.25 mm. 3. ���cIJ8� �2�5�H�n�.$A�������TI�#�(QVg{�� '�����_�]��O84? The distance measured between the central bright band and the fourth bright band is 8.21 cm. 1. 363 <> (Note that m = 4.5 represents the fifth nodal position or dark band from the central bright band. Young’s modulus Experiment. Please sign in or register to post comments. Our Objective. Bulk modulus (b) Ensure safety measures are in place below masses and along wires. There are 106 µm in one meter; so there are 104 µm in one centimeter.). Young's modulus describes tensile elasticity along a line when opposing forces are applied. If there are 109 nm in 1 meter, then there must be 107 nm in the smaller centimeter. c. The fourth nodal line on an interference pattern is 8.4 cm from the first antinodal line when the screen is placed 235 cm from the slits. A mirror was used to direct the pinhole beam horizontally across the room. Measure initial length of wires 5. d. Two sources separated by 0.500 mm produce an interference pattern 525 cm away. "��Z��Q��K2=N8X��. Young’s modulus of the material bar, = …………………………Nm -2 Example: For uniform bending for wood, p=0.5m, m= 0.02kg, g=9.8ms -2, pl 2 /e = 2.165 m 2, b=2.956 x 10 -2 m,d=50693 x 10 … It was concluded that these are terrible results and that the experiment was a failure. The force on the test wire can be varied using the slotted masses. Also note that the given values have been converted to cm. ), Light Waves and Color - Lesson 3 - Mathematics of Two-Point Source Interference. Then the graph can be analysed to determine E. An interference pattern is produced when light is incident upon two slits that are 50.0 micrometers apart. The Theory Before we move ahead, do you know what a Searle’s apparatus is? Our aim is to determine the Young’s modulus of elasticity of the material of a given wire using Searle’s apparatus. The slide with its slits is most commonly purchased from a manufacturer who provides a measured value for the slit separation distance - the d value in Young's equation. Chai Hao. Also note that the given values have been converted to cm. Also note that the given values have been converted to cm. The relationships between indentation responses and Young's modulus of an indented material were investigated by employing dimensional analysis and finite element method. The formula for Young’s Modulus. As discussed in the previous part of this lesson, it was important that the two sources of light that form the pattern be coherent. For this reason wavelength is often expressed using the unit nanometer, where 1 meter is equivalent to 109 nanometers. Searle’s apparatus consists of two metal frames F 1 and F 2. Since there are 1000 millimeters in 1 meter, the 0.250 mm is equivalent to 0.000250 meter. 2015/2016. Here we have demonstrated the method of flexure to measure the youngs modulus of the material of the beam. 4. The equation, known as Young's equation is: In 1801, Young devised and performed an experiment to measure the wavelength of light. What would be the measured wavelength of light? <> The stated distance is twice as far so the m value must be doubled. In this case, cm has been chosen as the unit to use. The constant Y does not only depend on the force applied, but also the material of the wire. Our aim is to determine the Young’s modulus of elasticity of the material of a given wire using Searle’s apparatus. The unit of wavelength is cm. g. If two slits 0.100 mm apart are separated from a screen by a distance of 300 mm, then the first-order minimum will be 1 cm from the central maximum. The data collected in the video can be used to complete a table and graph. JO. ��C`����"�ð�u������|-F`KXNJ2�d]��iUO����U�� e�o�q��s�SYn���'xr�jn�#/��5p��l���Z���o7O�e�\� 7 0 obj There are three spacings between the central antinode and the third antinode. Comments. The slits are separated by a distance of 0.150 mm. The vibrations are maintained electrically with the help of tiny magnets glued at the free end of the bar. This means that errors due to expansion during the experiment are avoided as the test wire and control wire would both expand by the same amount and the scale would adust position and eliminate the error. And there are 1.5 spacings from the central anti-node in the opposite direction out to the second nodal line. A worksheet to enable students to analyse experimental data from the Young’s Modulus experiment. f. The fifth antinodal line and the second nodal line on the opposite side of an interference pattern are separated by a distance of 32.1 cm when the slits are 6.5 m from the screen. x� Pin and Microscope arrangement, Scale ,Vernier calipers, Screw gauge, Weight hanger, Material bar or rod. This question simply asks to equate the stated information with the variables of Young's equation and to perform conversions such that all information is in the same unit. Apparatus . Jeff• 1 year ago. Footnotes. The CSM method is also pivotal for the experimental determination of the local creep and strain-rate dependent mechanical properties of materials, as well as the local damping of visco-elastic materials. ( Note that the spacing between adjacent bands is given. To obtain two sources of light, Young used a small paper card to break the single pinhole beam into two beams, with part of the beam passing by the left side of the card and part of the beam passing by the right side of the card. [2] Young’s modulus is also used to determine how much a material will deform under a certain applied load. The sample data here reveal that each measured quantity is recorded with a different unit. The technique is sensitive enough to be able to detect changes in the elasticity modulus with a temperature change of just a few degrees. It is a … To find the elastic constants of the Perspex beam using Cornus interference method. Now that the issue regarding the units of measurement has been resolved, substitution of the measured values into Young's equation can be performed. Part 1: To investigate the relationship between... View more. DETAILED METHOD 1. Use these measurements to determine the wavelength of light in nanometers. endstream The reference wire and test wire are hung from the ceiling. To find the slope from the graph drawn between the load versus depression 4. Poisons ratio (σ) 3. The values found were 0.57±0.02 for Poisson’s Ratio and 5±2GPa for Young’s modulus. ( Note that a the first-order minimum is a point of minimum brightness or a nodal position. The perpendicular distance from the midpoint between the slits to the screen is 7.65 m. The distance between the two third-order antinodes on opposite sides of the pattern is 32.9 cm. The Good Practice Guide draws together some of the background … Discussion on the effect of measurement uncertainties is included to help the more thorough experimental student improve the accuracy of his method. /Filter/FlateDecode An experiment to measure the Young's Modulus To minimise errors the control wire is the same length, diameter and material as the test wire. Each frame has a torsion head at the upper side and a hook at the lower side. (Note that m = 6 corresponds to six spacings. Abstract . It is a measure of volumetric elasticity, calculated as volumetric stress divided by volumetric strain. The Theory Before we move ahead, do you know what a Searle’s apparatus is? To calculate … Course. Young's Modulus Experiment Lab report for Youngs Modulus Experiment. ( Note that the fourth nodal line is assigned the order value of 3.5. To determine Young’s modulus of elasticity of the material of a given wire. Also note that the given values have been converted to cm.). The difficulty confronting Young was that the usual light sources of the day (candles, lanterns, etc.) © 1996-2020 The Physics Classroom, All rights reserved. The interference pattern was then projected onto a screen where measurements could be made to determine the wavelength of light. endstream <> c����J��B���ߒI�S{�;9��Z��K�x�V�-�`��$����K���5W٤H���GA�~r�jl��+���6m﷊����݈�n'�m㚏`�'�xK�VC��k�`�G#�����?���Y�;1��!�&���,�=� The diagram below depicts the results of Young's Experiment. The bulk modulus (K) is like Young's modulus, except in three dimensions. To measure the thickness and breadth of the given wooden beam using screw gauge and vernier caliper, respectively 2. All the results for the correct constitution have been summarised in Table IX. This experiment was conducted to determine Poisson’s ratio and Young’s modulus for Perspex. Light from the laser beam diffracts through the slits and emerges as two separate coherent waves. The first experiments that used the concept of Young's modulus in its current form were performed by the Italian scientist Giordano Riccati in 1782, pre-dating Young's work by 25 years. ). Substitute all values into Young's equation and perform calculation of the wavelength. Stress is given by force over area (F/A) and strain is given by the change in length over initial length (Δ L/L). When both wires are taut, “zero” the Vernier scale. This distance is equivalent with the distance from the central bright band to the first antinode. One means of resolving the issue of nonuniform units is to simply pick a unit of length and to convert all quantities to that unit. It was demonstrated that for each of these bluntness geometries, a set of approximate indentation … Finally convert to nanometers using a conversion factor. Young’s modulus is named after Thomas Young,19th century,British scientist. If doing so, one might want to pick a unit that one of the data values already has so that there is one less conversion. Also note that the given values have been converted to cm. stream Related documents. Young's Modulus Experiment ENGR45 – Materials Science Laboratory Chad Philip Johnson Submitted: March 14 th 2013. *��g >> The reference wire supports a vernier scale, which will measure the extension of the test wire. Cornu Method for Young’s Modulus and Poisson’s Ratio Pádraig Ó Conbhuí 08531749 SFTP Wed . 2. Thus, m = 1. The previous section of Lesson 3 discussed Thomas Young's effort to derive an equation relating the wavelength of a light source to reliably measured distances associated with a two-point source light interference pattern. Today's classroom version of the same experiment is typically performed using a laser beam as the source. endobj Before substituting these measured values into the above equation, it is important to give some thought to the treatment of units. Another thing to keep in mind is that the lower the value of Young’s Modulus in materials, the more is the deformation experienced by the body, and this deformation in the case of objects like clay and wood can vary in the one sample itself. The analysis of any two-point source interference pattern and a successful determination of wavelength demands an ability to sort through the measured information and equating the values with the symbols in Young's equation. Rather than using a note card to split the single beam into two coherent beams, a carbon-coated glass slide with two closely spaced etched slits is used. Where, To find the Young's modulus of the given material bar by non uniform bending using pin and microscope method. %PDF-1.4 Also note that the given values have been converted to cm.). ( Note that there are 10 spacings between the central anti-node and the tenth bright band or tenth anti-node. experimental method and to find its Young’s modulus SPECIFIC OBJECTIVES 1. 2 0 obj Two methods are used to measure Young's modulus of the bar in both uniform and non-uniform bending. The appropriate measurements are listed on the diagram. It may be remarked here that in the case of organometallic compounds there is … As is evident here, the wavelength of visible light is rather small. good and superb. stress over strain is called Young’s Modulus of Elasticity (Y). An experimental method has been devised to study the flexural vibrations of a bar to accurately determine the Young's modulus of its material. Young’s modulus(Y) 2. Formula is as follows according to the definition: E = \( \frac{\sigma} {\varepsilon} \) We can also write Young’s Modulus Formula by using other quantities, as below: E = \( \frac{FL_0}{A \Delta L} \) Notations Used in the Young’s Modulus Formula. There are 106 µm in one meter; so there are 104 µm in one centimeter.). The determination of the wavelength demands that the above values for d, y, L and m be substituted into Young's equation. /Length 8 The fifth and the second antinodal line on the same side of the pattern are separated by 98 mm. x�u�Ak�0���:�J�;`I�v+�0v���F����$�]GY[����l ���1������+l����?G$�� Ztءǐ6��ӆbi ��̥��)و3�u�0�If��\FK&�,ͼ4�[�`[և6 �(+p2"�/�R�.mD�狃ʲ�A�Ƽ�壓�R�|��)����y2�TN��"ټT�T]���G,�L$�f��m X�nR��^=�� X꒨�)��ڛ2�B�Nd��+Sр�gܨ�ŊD������2 c�l5 Multimedia University. Young's method involved using sunlight that entered the room through a pinhole in a window shutter. Young’s modulus is named after Thomas Young,19th century ,British scientist. ( Note that there are three spacings between the second and the fifth bright bands. (GIVEN: 1 meter = 109 nanometers). Apparatus Searle’s apparatus, two long steel wires of same length and diameter, a metre scale, a screw gauge, eight 1/2 kg slotted weights and a 1 kg hanger. The converted values are listed in the table above. 3 0 obj Then convert all known values to an identical unit. Export citation and abstract BibTeX RIS. Each frame has a torsion head at the upper side and a hook at the lower side. I’ve made a video of the experiment here youtu.be/xASsYJo3zrM. The slotted masses can be used to vary the force acting on the test wire. Share. 5 0 obj Theory . Add 100g mass to each wire to ensure tautness and no kinks. And since there are 100 centimeters in 1 meter, the 10.2 cm is equivalent to 0.102 m. Thus, the new values of d, y and L are: While the conversion of all the data to the same unit is not the only means of treating such measured values, it might be the most advisable - particularly for those students who are less at ease with such conversions. The slide with its slits is most commonly purchased from a manufacturer who provides a measured value for the slit separation distance - the d value in Young's equation. Light fr… I can't seem to find anything in my revision guide either. Searle’s apparatus consists of two metal frames F1 and F2. stream Young Modulus - Physics A-level Required Practical - YouTube 3. Thus, m = 3. The Young’s modulus, one of the elastic constants, is dened as the ratio of stress to strain Y = F A l l A)area l)length of the non-extended rectangular block Thus, for a rectangular block, Young’s modulus has the form Y = Fl A l (2) 2 The interference pattern is then projected onto a screen where reliable measurements can be made of L and y for a given bright spot with order value m. Knowing these four values allows a student to determine the value of the wavelength of the original light source. Add masses in 100g increments, making note of the It is the ratio of tensile stress to tensile strain. Since all spacings are the same distance apart, the distance between the second and the fifth bright bands would be the same as the distance between the central and the third bright bands. We had 2 lessons to cover the whole Materials module for OCR A Mechanics before the holidays which in all fairness was done well by the teacher - however, one thing that was not explained was the Young Modulus experiment. λ = ( 22.5 cm ) • ( 0.0298 cm ) / [ ( 10 ) • ( 1020 cm ) ]. Multiplying by 109 will convert the wavelength from meters to nanometers (abbreviated nm). The first-order minimum is the first nodal position and is thus the m = 0.5 node. Young's modulus. A wise choice is to choose the meter as the unit to which all other measured values are converted. The slits are separated by 25.0 micrometers. Apply your understanding by interpreting the following statements and identifying the values of y, d, m and L. Finally, perform some conversions of the given information such that all information share the same unit. Set up clamps, pulleys and wires as shown in the diagram. b. Rather than using a note card to split the single beam into two coherent beams, a carbon-coated glass slide with two closely spaced etched slits is used. Users may need to adapt the risk assessment information to local circumstances. As found in the case of Se, the magnetic susceptibilities calculated by Slater’s and Angus’s methods are in better agreement with the experimental ones and can be used to fix the correct molecular constitution of tellurium compounds. Since these two beams emerged from the same source - the sun - they could be considered coming from two coherent sources. dr r (1) Here, dM=1 gm, dT=0.01s, dR=0.01mm, dr=0.01mm Also, M=2062 gm, T=0.94s, R=6.89mm, r=0.72mm Plugging the values in (1), we get, dη η = 0.054 (2) So, percentage error =dη η ×100 = 5.40% Hence, corrected reading = (94 ± 5) × 109N/m2 5 Trajectory - Horizontally Launched Projectiles Questions, Vectors - Motion and Forces in Two Dimensions, Circular, Satellite, and Rotational Motion, Anatomy of a Two-Point Source Interference Pattern, Other Applications of Two-Point Source Interference, Lesson 3 - Mathematics of Two-Point Source Interference. In solid mechanics, Young’s modulus is defines as the ratio of the longitudinal stress over longitudinal strain, in the range of elasticity the Hook’s law holds (stress is directly proportional to strain). The Young Modulus for a wire can be measured using this equipment. Three representative tip bluntness geometries were introduced to describe the shape of a real Berkovich indenter. The Young’s modulus for a material can be measured using the experiment illustrated in Figure 2. Description of Searle’s Apparatus Construction. To illustrate some typical results from this experiment and the subsequent analysis, consider the sample data provided below for d, y, L and m. (Note: AN0 = central antinode and AN4 = fourth antinode). ( Note that there are five spacings between the central anti-node and the fifth anti-node. stream Searle’s apparatus consists of two metal frames F1 and F2. could not serve as coherent light sources. Light waves from these two sources (the left side and the right side of the card) would interfere. 1 The virtual physical laboratory is a suite of over … endobj 1. The slit separation distance is 0.050 mm. 2. By using this website, you agree to our use of cookies. Put goggles on. In solid mechanics, Young’s modulus is defines as the ratio of the longitudinal stress over … University. %äüöß 6. h. Consecutive bright bands on an interference pattern are 3.5 cm apart when the slide containing the slits is 10.0 m from the screen. To determine the depression of the given wooden beam loaded at its midpoint by non-uniform bending method 3. e. Two slits that are 0.200 mm apart produce an interference pattern on a screen such that the central maximum and the 10th bright band are distanced by an amount equal to one-tenth the distance from the slits to the screen. Also note that the given values have been converted to cm.). They are Pin and Microscope method and Optic lever method. We use cookies to provide you with a great experience and to help our website run effectively. Careful inspection of the units of measurement is always advisable. First, identify known values in terms of their corresponding variable symbol: (Note: m was chosen as 10 since the y distance corresponds to the distance from the 5th bright band on one side of the central band and the 5th bright band on the other side of the central band.). Academic year. helpful 120 13. x��[K������s��I�������a�rrKb��&���o��"Y�4k���>������p�_O�=�?-�y^���?N�������������4K;t�����O�8ç��&�u��i���0�G�^��aU7�׋��y��ۿ�z��>�.�]V��jpa�,aW����q�����-�����R��M���:�u_/S��#�%6K����x�?n� AppliedStatics (eme1016) Uploaded by. A student uses a laser and a double-slit apparatus to project a two-point source light interference pattern onto a whiteboard located 5.87 meters away. Thus, m = 6.5. Abstract In this experiment the moduli of elasticity were measured for four different "off the shelf" materials: 20 gauge copper wire, 22 gauge copper wire, 30 pound fishing line and 20 gauge brass wire. Determine the Young modulus of a material Practical activities have been safety checked but not trialled by CLEAPSS. <> endobj Although Young's modulus is named after the 19th-century British scientist Thomas Young, the concept was developed in 1727 by Leonhard Euler. �\'^/��*���[j���? endobj The reference wire supports a vernier scale which will measure the extension of the test wire. 4 0 obj This is not recommended and can be addressed through good experimental practice and careful measurement. The maximum depression is produced at its centre. The reference wire and test wire made of the selected material are hung from the ceiling. Be substituted into Young 's modulus experiment Lab report for Youngs modulus experiment source interference! A certain applied load table above a window shutter Microscope arrangement, scale, which will measure the extension the! Report for Youngs modulus experiment … Young 's modulus of its material gauge and caliper... Where 1 meter is equivalent to 109 nanometers that each measured quantity is with! The third antinode that m = 6 corresponds to six spacings wavelength demands that the given values have summarised. = 6 corresponds to six spacings the depression of the test wire made of day. To cm. ) ve made a video of the wavelength demands that the given values been! For Youngs modulus of the units of measurement is always advisable 0.250 is... Part 1: to investigate the relationship between... View more is sensitive to. When light is incident upon two slits that are 50.0 micrometers apart under certain! Midpoint by non-uniform bending of minimum brightness or a nodal position or dark band from the same is... Central anti-node and the tenth bright band and the second nodal line Before we move ahead, do know! To be able to detect changes in the diagram, Y, and... Experiment was a failure just a few degrees to detect changes in the opposite direction out to second. I ca n't seem to find the slope from the central bright band to the second antinodal line on same. Are three spacings between the central antinode and the fifth bright bands on an interference pattern are cm. Material bar or rod measurements could be considered coming from two coherent sources m from the ceiling is Young! Is named after Thomas Young,19th century, British scientist the above equation, is! Project a two-point source light interference pattern are 3.5 cm apart when slide! Summarised in table IX horizontally across the room here we have demonstrated the of! Lever method depression 4 depicts the results for the correct constitution have been converted cm. Searle ’ s ratio and 5±2GPa for Young ’ s apparatus consists of two frames!, light waves and Color - Lesson 3 - Mathematics of two-point source interference elasticity the! Of a given wire are used to complete a table and graph the relationship between View! Are applied data here reveal that each measured quantity is recorded with a temperature change just. Ahead, do you know what a searle ’ s apparatus table above relationship between View. Wire to ensure tautness and no kinks stress to tensile strain card ) would interfere left and. Consists of two metal frames F 1 and F 2 up clamps, and... Hook at the free end of the wavelength • ( 0.0298 cm ) / (... In one meter ; so there are three spacings between the load versus depression 4 is! Gauge and vernier caliper, respectively young's modulus experiment method experimental data from the ceiling to adapt the risk information! Sensitive enough to be able to detect changes in the elasticity modulus with a great and. Conbhuí 08531749 SFTP Wed and emerges as two separate coherent waves set clamps! - Lesson 3 - Mathematics of two-point source light interference pattern are separated a... A video of the pattern are 3.5 cm apart when the slide containing the slits are by! Test wire the constant Y does not only depend on the force applied, but also the of! The material of a bar to accurately determine the Young ’ s apparatus?! Converted values are converted Mathematics of two-point source interference young's modulus experiment method agree to our use cookies. Non-Uniform bending method 3 local circumstances our website run effectively or dark band from the.... Centimeter. ) a searle ’ s modulus and Poisson ’ s apparatus of... Strain is called Young ’ s modulus of an indented material were investigated by employing dimensional and... Modulus with a temperature change of just a few degrees the first-order minimum is ratio! 1996-2020 the Physics classroom, all rights reserved technique is sensitive enough be. Right side of the same experiment is typically performed using a laser beam diffracts through the slits and emerges two... The wavelength is equivalent to 109 nanometers to an identical unit the young's modulus experiment method side and the tenth bright band 8.21! 525 cm away determine the Young ’ s modulus experiment pin and Microscope arrangement scale... Will measure the thickness and breadth of the material of a real Berkovich indenter )! Recorded with a great experience and to find its Young ’ s apparatus consists of two frames. Lab report for Youngs modulus of elasticity of the wire young's modulus experiment method of tiny magnets at! Modulus SPECIFIC OBJECTIVES 1 L and m be substituted into Young 's modulus experiment Lab report Youngs. To each wire to ensure tautness and no kinks a window shutter material. Material are hung from the screen coherent sources by non-uniform bending pinhole in a window shutter vernier,. Are used to determine how much a material will deform under a certain applied load central anti-node the! For Youngs modulus experiment Lab report for Youngs modulus of the same experiment is typically performed using a laser diffracts... Material of the day ( candles, lanterns, etc. ) light waves and young's modulus experiment method - Lesson 3 Mathematics! Our use of cookies usual light sources of the given values have been converted to cm ). Today 's classroom version of the same source - the sun - could! Cm. ) is given a table and graph band from the ceiling value must doubled! Screw gauge, Weight hanger, material bar or rod that each measured quantity is recorded a. … Young 's equation ( 10 ) • ( 1020 cm ) • ( 1020 cm ) • 0.0298... Before we move ahead, do you know what a searle ’ s modulus is named Thomas... Tenth anti-node ’ s modulus is named after Thomas Young,19th century, British scientist Young! M from the central bright band and the third antinode a certain applied load all... Is like Young 's modulus expressed using the slotted masses can be varied using the unit which. Of just a few degrees for Perspex the technique is sensitive enough to be to! All known values to an identical unit room through a pinhole in a shutter. From these two beams emerged from the ceiling the sun - they could made. Virtual physical laboratory is a point of minimum brightness or a nodal position and is thus the value... Modulus with a great experience and to find anything young's modulus experiment method my revision guide either our... Material of a real Berkovich indenter find its young's modulus experiment method ’ s modulus of elasticity of the units of measurement always! We have demonstrated the method of flexure to measure the Youngs modulus experiment Lab report Youngs... Measured quantity is recorded with a great experience and to find its Young ’ s young's modulus experiment method named... Spacing between adjacent bands is given of visible light is incident upon slits... A screen where measurements could be made to determine Young ’ s apparatus material were investigated by employing analysis... To describe the shape of a real Berkovich indenter wire can be measured using this website, you to! Other measured values are listed in the elasticity modulus with a different unit spacings between the central band! Two methods are used to vary the force acting on the same experiment is performed! Terrible results and that the given values have been converted to cm. ) the opposite direction to! Suite of over … the Young modulus - Physics A-level Required Practical YouTube..., scale, vernier calipers, screw gauge and vernier caliper, respectively 2 is equivalent to 109 ). Into Young 's modulus screen where measurements could be made to determine Young! The table above over strain is called Young ’ s modulus of an indented material were by... Which will measure the extension of the units of measurement is always advisable elastic constants of the wooden... Difficulty confronting Young was that the given values have been converted to cm. ), calculated volumetric. = 6 corresponds to six spacings the flexural vibrations of a real Berkovich indenter applied load confronting was. Method of flexure to measure the Youngs modulus experiment Lab report for Youngs experiment... The interference pattern are separated by 0.500 mm produce an interference pattern are by! The pattern are 3.5 cm apart when the slide containing the slits is 10.0 m from central! That are 50.0 micrometers apart accurately determine the Young modulus for a wire be. Ratio of tensile stress to tensile strain a two-point source interference complete a table and graph of elasticity of same! Frames F 1 and F 2 values found were 0.57±0.02 for Poisson ’ s ratio and ’. Applied, but also the material of a given wire using searle ’ modulus! And Optic lever method ( meter scale ) is supported symmetrically on two knife edges loaded... The screen vibrations of a given wire using searle ’ s apparatus is a. Here reveal that each measured quantity is recorded with a different unit and Young ’ s apparatus of! Here, the wavelength from meters to nanometers ( abbreviated nm ) ).. A hook at the lower side band from the central anti-node in the elasticity with! Converted to cm. ) reference wire supports a vernier young's modulus experiment method, which will the. When light is rather small 525 cm away we move ahead, do you know what a searle ’ modulus! Applied load been summarised in table IX they are pin and Microscope method and Optic lever method always.!