Thomas Young :: biographies bio physics physicist

Thomas Young (1773-1829) Thomas Young was a brilliant man throughout his life. At a young age of fourteen, he was familiar with Latin, Greek, French, Italian, Hebrew, Arabic, and Persian. He was so educated in a variety of areas that his peers called him Phenomena Young. This Englishman found interest in languages, medicine, nature, and light. He did his studies in London, Edinburgh, and Gà ¶ttingen, and practiced medicine in London. With his strong interest in sense perception, he was able to make many realizations and discoveries about the eye. For example, he was the first to realize the eye focuses by changing the shape of the lens, he discovered the cause of astigmatism, and he and Helmoltz initiated the three color theory of perception. In 1801, regardless of the uncertainty from other scientists, his double-slit experiment established that light was a wave motion, making his famous. Over the years, he gained new interests. He started studying Egyptology, and while he was one Napoleon’s expedit ions he started studying the texts of Rosetta Stone. This in time helped to decipher the ancient Egyptian hieroglyphic writing. Some other interests that Young acquired over the years, leading him to more discoveries are surface tension, elasticity and energy. He even worked as a professor at schools, including the Royal Institution and Cambridge University. Thomas Young was a smart, well educated English physician and physicist. His love for his work and interests allowed him to make discoveries that help us to this day, and to be remembered and acknowledged as â€Å"†¦a man alike eminent in almost every department of human learning.† Lifelong Accomplishments 1773 -Thomas Young is born 1792 -Young decided on a career in medicine. 1793 -Presented a paper before the Royal Society in which he attributed the accommodation of the eye to its muscular structure 1794 -Elected to membership of the Royal Society -After completing his medical studies at Edinburgh and Gà ¶ttingen, he returned to London to practice but continued his scholarly studies at Emmanuel College, Cambridge -His uncle died, making him financially independent, allowing him to pursue his real interests 1798 -Some investigations on sound and light formed the starting point for his theory of interference 1799 -Began his medical practice in London -While attending medical school, he discovered how the lens of the human eye changes shape to focus on objects at different distances 1800 -Published his experiments on Sound and Light in the Philosophical Transactions of the Royal Society 1801 -Discovered the cause of astigmatism -Young and Helmholtz initiated the three color theory of perception.

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Assume,. for. example,. that. the. encoder. generates. 600. pulses. per. revolution,. and. it. takes. 000. motor. revolutions. to. move. the. platform. from. one. position. to. another,. moving. the. platform. from. position. . to. position. 6. (5. positions). takes. 5000. motor. revolutions. or. 30,000. encoder. pulses.. In. most. practical. applications,. the. frequency. of. these. pulses. is. too. high. for. them. to. be. counted. with. inputs. that. are. not. associated. with. a. highspeed. counter.. Interrupts. S7-200. PLCs. incorporate. instructions. for. use. with. interrupts.. Interrupts. are. used. to. initiate. a. specific,. hort. PLC. program. segment,. called. an. interrupt. routine,. when. an. internal. or. external. event. occurs.. After. the. interrupt. routine. has. been. executed,. control. is. returned. to. the. main. program. Three. types. of. interrupts. are. supported. by. S7-200. PLCs,. communication port interrupts,. I/O interrupts,. and. timebased interrupts .. Communication. port. interrupts. are. used. to. control. a. communication. port. operated. in. Freeport. mode.. I/O. interrupts. are. used. to. respond. quickly. to. high-speed. I/O. transitions,. such. as. those. associated. with. high-speed. counters. or. pulse. train. outputs..Time-based. interrupts. allow. the. user. program. to. execute. an. interrupt. routine. on. a. cyclic. basis. Each. of. these. types. of. interrupts. has. an. associated. priority. that. determines. which. interrupt. is. processed. first. in. the. event. that. two. or. more. interrupts. are. requested. at. the. same. time.. Communication. port. interrupts. have. the. highest. priority. and. time-based. interrupts. have. the. lowest. priority. Pulse Training Output (PTO). S7-200. PLCs. have. two. PTO/PWM generators. that. create. either. a. high-speed. pulse. train. or. a. pulse. width. modulated. waveform.. One. generator. is. assigned. o. output. point. Q0. 0. and. the. other. to. output. point. Q0. .. When. a. generator. is. activated,. it. controls. its. respective. output. Pulse Train Output (PTO). is. used. to. provide. a. series. of. pulses. to. an. output. device,. such. as. a. stepper. motor. driver.. The. PTO. provides. a. square. wave. output. for. a. specified. number. of. pulses. and. a. specified. cycle. time.. The. number. of. pulses. can. be. from. . to. 4,294,967 ,295. pulses.. The. Pulse. Train. Output. has. a. 50%. duty. cycle.. This. means. the. pulse. is. off. for. the. same. amount. of. time. that. it. is. on. 63 The. number. of. pulses. and. he. cycle. time. can. be. changed. with. an. interrupt.. In. the. accompanying. example,. each. pulse. is. initially. on. for. 500. ms. and. off. for. 500. ms.. After. four. pulses,. an. interrupt. occurs. which. changes. the. cycle. time. to. 2. seconds,. . second. on. and. . second. off. . 1 sec 1 sec 500 ms Interrupt Occurs Pulse Width Modulation. (PWM) The. Pulse Width Modulation (PWM) function. provides. a. fixed. cycle. time. with. a. variable. duty. cycle.. When. the. pulse. width. is. equal. to. the. cycle. time,. the. duty. cycle. is. 00%. and. the. output. is. turned. on. continuously.. In. the. following. example,. he. output. initially. has. a. 0%. duty. cycle. (on. 0%,. off. 90%).. After. an. interrupt,. the. output. switches. to. a. 50%. duty. cycle. (on. 50%,. off. 50%). On Off On Off 10% Duty Cycle 50% Duty Cycle Interrupt Occurs The. PWM. function. can. be. used. to. provide. a. programmable. or. adjustable. control. of. machine. timing.. This. allows. machine. operation. to. be. varied. to. compensate. for. product. variations. or. mechanical. wear. And Much More. The. instructions. listed. in. this. section. are. only. examples. of. the. types. of. instructions. available. for. S7-200. PLCs.. The. full. instruction. set. includes. a. uch. broader. range. of. capabilities.. Refer. to. the. S7-200. System. Manual. for. additional. information. 64 Specialized Expansion Modules In. addition. to. the. expansion. modules. previously. discussed. that. provide. additional. discrete. or. analog. I/O,. several. expansion. modules. are. available. to. provide. communication. interfaces. or. specialized. I/O. functions. EM 241 Modem Module One. of. these. modules. is. the EM 241 Modem module.. This. module. supports. communication. between. a. computer. with. STEP. 7. Micro/WIN. and. an. S7-200. PLC. SF/DIAG EM 241 MODEM 241-1AA22-0XA0 S7-200 PLC with EM 241 Modem ModuleModem Computer The. EM. 24. provides. an. international. telephone. line. interface. and. supports. sending. numeric. and. text. paging. messages,. as. well. as. SMS. (Short. Message. Service). messages. to. cellular. phones.. This. is. useful. for. remote. diagnostics. and. maintenance,. machine. control,. alarm. systems,. and. general. communication. functions. In. addition. to. CPU-to-CPU. communication. via. a. telephone. line,. the. EM. 24. also. supports. Modbus. RTU. protocol,. a. protocol . that. has. been. widely. used. for. many. years. SINAUT MD 720-3 GSM/GPRS Modem Module SINAUT Telecontrol (Siemens Network Automation). ermits networking. of. individual. controls. and. control. systems. over. a. WAN. (Wide. Area. Network).. One. approach. for. providing. this. capability. is. SINAUT Micro.. This. is. a. simple. and. flexible. way. to. link. stationary. or. mobile. stations. to. a. master. control. center.. SINAUT. Micro. is. appropriate. where. smaller. amounts. of. data. have. to. be. transmitted. to. permit. monitoring. and. control. of. remote. stations. using. wireless. techniques. with. the. General. Packet. Radio. Service. (GPRS). of. the. Global. System. for. Mobile. Communication. (GSM). mobile. radio. network.. 65 The.SINAUT MD720-3 GSM/GPRS Modem module. and. associated. ANT794-4MR antenna. are. the. hardware. elements. used. to. connect. an. S7-200. PLC. into. a. SINAUT. Micro. system.. SINAUT Micro SC software. is. also. required. WinCC flexiible, Win CC SET S O C RS232 X1 SINAUT MD720-3 720-3AA00 SINAUT MD 720-3 GSM/GPRS Modem Module Antenna CP 243-1, CP 243-1 IT Communication Processors. Industrial. Ethernet. provides. a. proven. means. of. networking computers. and. a. variety. of. intelligent. devices.. CP 243-1 and CP 243-1 IT communication processors. are. used. to. connect. an. S7-200. PLC. to. an. Industrial Ethernet network. CP. 43-. and. CP. 243-. IT. communication. processors. can. be. used. to. connect. an. S7-200. PLC. via. Industrial. Ethernet. to. a. computer. running. STEP. 7. Micro/WIN.. This. allows. the. S7-200. PLC. to. be. configured,. programmed,. and. diagnosed. remotely.. In. addition,. an. S7-200. PLC. connected. to. an. Industrial. Ethernet. network. can. communicate. with. S7-200,. S7-300,. and. S7-400. PLCs. and. a. variety. of. other. devices. The. IT. functions. of. the. CP. 243-. IT. Internet. module. simplify. the. process. of. setting. up. a. control. system. that. can. email. diagnostic. infor mation. or. transfer. files. using.Internet. protocols. S7-200 PLC with CP 243-1 or CP 243-1 IT Communication Processor SF/DIAG SIMATIC S7-300 PLC CP 243-1 Ethernet CP 243-1EX00-0XE0 Industrial Ethernet Programming Device (PG) or Computer SIMATIC S7-400 PLC 66 EM 277 PROFIBUS-DP. Module. PROFIBUS DP. is. an. open,. international. fieldbus. communication standard. that. allows. a. broad. range. of. intelligent. devices. from. various. manufacturers. to. communicate. rapidly. and. efficiently.. This. reduces. wiring. costs. as. well. as. start-up. and. maintenance. expenses.. EM 277 PROFIBUS-DP module. allows. connection. of. the. S7-200. CPU. (CPU. 222. and. above). o. a. PROFIBUS-DP. network. as. a. slave.. Non-Siemens Controllers Other Intelligent Devices and Systems S7-200 PLC with EM 277 PROFIBUS DP Module SIMATIC S7 – 200 SF/DIAG RUN STOP 0 Other SIMATIC Controllers 2 4 0 2 8 X10 6 8 00 . 0 . 1 . 2 . 3 . 4 . 5 . 6 . 7 01 . 0 . 1 CPU 224 AC/DC/RLY X1 6 4 EM 277 PROFIBUS-DP CPU FAULT POWER DP ERROR DX MODE I0 .0 . 1 . 2 . 3 . 4 . 5 . 6 . 7 I1 .0 . 1 . 2 . 3 . 4 . 5 PORT 0 PROFIBUS DP I/O Systems Display Systems Computers CP 243-2 AS-Interface Master Module Actuator Sensor Interface (AS-Interface or AS-i). is. a. system for. networking. field. devices. such. as. sensors. and. actuators. ith. control. and. operator. interface. devices.. AS-i. replaces. the. extensive. parallel. wiring. often. used. to. connect. sensors. and. actuators. to. controllers. with. a. simple. 2-core. cable.. The. cable. is. designed. so. that. devices. can. only. be. connected. correctly. CP 243-2 AS-Interface Master module. allows. connection. of. the. S7-200. CPU. (CPU. 222. and. above). to. a. AS-I. network. as. a. master.. S7-200 PLC with CP 243-2 AS-Interface Master Module SIMATIC S7 – 200 SF/DIAG RUN STOP 00 . 0 . 1 . 2 . 3 . 4 . 5 . 6 . 7 01 . 0 . 1 CPU 224 AC/DC/RLY CM CER PWR APF SF B SET AS-Interface Master CP 243-2 AUP 0 1 2 3 5 6 7 8 9 10 11 12 13 14 15 16 1 7 18 19 20 21 22 23 24 25 26 27 28 29 30 31 31 I0 .0 . 1 . 2 . 3 . 4 . 5 . 6 . 7 I1 .0 . 1 . 2 . 3 . 4 . 5 DISPLAY 6GK7 243-2AX01-0XA0 AS-Interface Power Supply Slaves Repeater AS-Interface Power Supply Slaves PORT 0 100 meters S7-200 PLC with CP 243-2 AS-Interface Master Module SIMATIC S7 – 200 SF/DIAG RUN STOP 00 . 0 . 1 . 2 . 3 . 4 . 5 . 6 . 7 01 . 0 . 1 100 meters CPU 224 AC/DC/RLY CM CER PWR APF SF B SET AS-Interface Master CP 243-2 AUP 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 31 AS-Interface Power Supply Slaves Slaves AS-Interface Extension PlugI0 .0 . 1 . 2 . 3 . 4 . 5 . 6 . 7 I1 .0 . 1 . 2 . 3 . 4 . 5 DISPLAY 6GK7 243-2AX01-0XA0 PORT 0 200 meters 67 EM 253 Position Module. Position. control. describes. a. range. of. applications. that. involve. movement. with. varying. degrees. of. precision.. The. EM 253 Position module. is. a. simple. but. powerful. positioning. module. that. enables. the. user. to. control. position. sys tems. from. microsteppers. to. intelligent. servo. drives. (with. integrated. closed-loop. control). SF/DIAG MF MG P0 DIS P1 CLR PWR EM 253 Position STP ZP LMT RPS – + 253-1AA22-0XA0 S7-200 PLC with EM 253 Position Module EM 253 Features. Features. f. the. module. include: †¢. †¢. †¢. †¢. †¢. †¢. †¢. †¢. †¢. Provides. high-speed. control. with. a. range. from. 20. to.. 200,000. pulse. per. second Supports. both. S. curve. or. linear. acceleration. and. deceleration Provides. a. configurable. measuring. system. that. allows. you. to. enter. data. as. engineering. units. (such. as. inches. or. centimeters). or. as. a. number. of. pulses Provides. configurable. backlash. compensation Supports. absolute,. relative,. and. manual. methods. of. position. control Provides. continuous. operation Provides. up. to. 25. motion. profiles. with. up. to. 4. speed. changes. per. profile Provides. our. different. reference-point. seek. modes. with. a. choice. of. the. starting. seek. direction. and. final. approach. direction. for. each. sequence Provides. removable. field. wiring. connectors. for. easy. installation. and. removal 68 Expansion Modules for Temperature Measurement Two. S7-200. PLC. expansion. modules. are. available. for. accurate temperature. measurement, EM 231 Thermocouple module and EM 231 RTD module. EM. 23. Thermocouple. module. provides. analog. inputs. for. thermocouples.. A. thermocouple. is. a. temperature. sensor. made. from. two. dissimilar. metals. joined. at. a. point. called. a. junction..A. thermocouple. produces. a. small. voltage. that. is. dependent. upon. temperature.. Various. types. of. thermocouples. are. available. for. use. in. different. temperature. ranges.. Two. versions. of. EM. 23. Thermocouple. modules. are. available,. one. for. four. thermocouples. and. one. for. eight. thermocouples.. Each. version. is. compatible. with. J,. K,. T,. E,. R,. S,. or. N. thermocouples,. but. the . thermocouples. used. with. a. specific. module. must. be. of. the. same. type. EM. 23. RTD. module. provides. analog. inputs. for. resistance temperature detectors (RTDs).. An. RTD. is. a. temperature. sensor. made. rom. a. metal,. such. as. platinum,. nickel,. or. copper,. that. varies. in. resistance. in. a. predictable. manner. as. temperature. varies.. Two. versions. of. the. EM. 23. RTD. module. are. available,. one. with. two. analog. inputs. and. one. with. four. analog. inputs.. Either. version. can. be. used. with. a. variety. of. RTD. types,. but. the. RTDs. used. with. a. specific. module. must. be. of. the. same. type. SIMATIC S7 – 200 SF/DIAG RUN STOP 00 . 0 . 1 . 2 . 3 . 4 . 5 . 6 . 7 01 . 0 . 1 CPU 224 AC/DC/RLY +24 VDC SF EM 231 AI4 – TC I0 .0 . 1 . 2 . 3 . 4 . 5 . 6 . 7 I1 .0 . 1 . 2 . 3 . 4 . 5 243-7PD22-0XA0 PORT 0S7-200 PLC with EM 231 Expansion Module A+ A- B+ B- C+ C- D+ D- A+ A- a+ a- B+ B- b+ b- M L+ Configuration M L+ Configuration + 24 VDC Refer to the S7-200 Programmable Controller System Manual for Configuration DIP Switch Positions + 24 VDC Refer to the S7-200 Programmable Controller System Manual for Configuration DIP Switch Positions EM 231 Thermocouple module, 4 Input Version EM 231 RTD module, 2 Input Version 69 SIWAREX MS Weighing Module SIWAREX MS Weighing module provides.. a. simple,. easy to. install. approach. for. weighing. and. force. measurement. applications.. SWAREX. MS. Weighing. module. is. designed. to. measure. the. oltage. produced. by. sensors. commonly. used. to. measure. weight,. force,. or. torque. SIWAREX. MS. is. easily. integrated. into. an. S7-200. PLC. system. as. an. expansion. module.. This. makes. information. obtained. from. SIWAREX. MS. available. to. other. components. of. the. automation. system.. In. addition,. Siemens. offers. a. wide. variety. of. compatible. sensors. and. other. components. S7-200 PLC with SIWAREX MS Module SIMATIC S7 – 200 SF/DIAG RUN STOP 00 . 0 . 1 . 2 . 3 . 4 . 5 . 6 . 7 01 .0 . 1 CPU 224XP DC/DC/DC SF I NET p —I SIWAREX MS ->00< >< T Tp T o SIWAREX R Load Cell Touch Panel TP 177micro 0 Review 6 .. Three. types. of. SIMATIC. counters. available. in. the. S7-200. instruction. set. are. ____________,. ____________. and. ____________. 2†¦ CPU. 22. and. CPU. 222. support. ____. high. speed. counters.. CPU. 224,. CPU. 224XP ,. CPU. 224XPsi,. and. CPU. 226. support. ____. high. speed. counters. 3.. S7-200. PLCs. have. two. ___________. that. create. either. a. high-speed. pulse. train. or. a. pulse-width. modulated. waveform. 4.. ________. and. ________. communication. processors. are. used. to. connect. an. S7-200. PLC. to. an. Industrial. Ethernet. network. 5.. _________. module. allows. connection. of. an.S7-200. CPU. (CPU222. and. above). to. a. PROFIBUS-DP. network. as. a. slave. 6.. _________. module. allows. connection. of. an. S7-200. CPU. (CPU222. and. above). to. an. AS-I. network. as. a. master. 7 .. Two. v ersions. of. EM. 23. Thermocouple. module. are. available,. one. for. ____. thermocouples. and. one. for. ____. thermocouples. 8.. Two. versions. of. EM. 23. RTD. module. are. available,. one. for. ____. RTDs. and. one. for. ____. RTDs. 7 Review Answers Review 1 Review 2. . Review 3. Review 4. ). a:. input. module,. b:. CPU,. c:. output. module,. d:. programming. device,. e:. operator. interface;. 2). 2;. 3). 6;. 4). 00,. 000. 0000,. A. ). discrete;. 2). discrete;. 3). CPU;. 4). Ladder. logic;. 5). Statement. list,. function. block. diagrams;. 6). scan;. 7)024;. 8). firmware; 9). RS-485. ). CPU. 22,. CPU. 222,. CPU. 224,. CPU. 224XP ,. CPU. 224XPsi,. CPU. 226;. 2). b;. 3). 2,. 7;. 4). 8,. 6;. 5). 4,. 0;. 6). Q0. 3;. 7). DIN. ). a:. box,. b:. normally. open. contact,. c:. coil;. 2). AND. Function. -. a:. 0,. b:. 0,. c:. 0,. d:. ,. OR. Function. -. e:. 0,. f:. ,. g:. ,. h:. ;. 3). I0. ,. I0. 0,. Q0. 0. ). 224XP;. 2). On-Delay. Timer. (TON),. Retentive. On-Delay. Ti mer. (TONR),. Off-Delay. Timer. (TOF). ;. 3). 3276. 7. seconds;. ). Retentive. On-Delay. Timer. (TONR);. 5). On-Delay. Timer. (TON),. Off-Delay. Timer. (TOF),. Pulse. Timer. (TP). ). Count. Up. Counter. (CTU),. Count. Down. Counter. (CTD),. Count. Up/Down. Counter. (CTUD);. 2). 4,. 6;. 3). PTO/PWM. generators; 4). CP. 243-,. CP. 243-. IT;. 5). EM. 277. PROFIBUS-DP 6). CP. 243-2. AS-Interface. Master;. 7). 4,. 8;. 8). 2,. 4.. Review 5. Review 6. 72 73 Final Exam You. can. test. your. knowledge. by. taking. the. final. exam. for. this. course. online. at. http://www. usa. siemens. com/step.. This. web. page. provides. links. to. a. variety. of. our. quickSTEP. online. courses.. To. complete. he. final. exam. for. this. course,. click. on. the. Basics of PLCs. link.. Next,. move. your. mouse. over. to. the. left. so. that. the. navigation. bar. pops. out. and. select. the. Final Exam. link.. The. final. exam. page. will. appear.. Before. taking. the. final. exam,. it. is. recommende d. that. you. delete. the. temporary. files. on. your. computer.. For. most. versions. of. Internet Explorer,. you. can. do. this. by. selecting. Internet Options. from. the. Tools. menu. and. then. clicking. on. the. Delete Files. button.. If. you. do. not. perform. this. step,. you. may. see. a. score. of. 0%. after. you. submit. your. xam. for. grading. After. you. complete. the. final. exam,. click. on. the. Grade the Exam. button. at. the. bottom. of. the. page.. Your. score. on. the. exam. will. be. displayed. along. with. the. questions. that. you. missed.. If. you. score. 70%. or. better. on. the. exam,. you. will. be. given. two. options. for. displaying. and. printing. a. certificate. of. completion.. The. Print Certificate. option. allows. you. to. display. and. print. the. certificate. without. saving. your. score. in. our. database. and. the. Save Score. option. allows. you. to. save. your. score. and. display. and. print. your. certificate. 74

Questions On Single Parent Family - 1260 Words

trexie fernandez melissa shaw english 3 may 23, 2017 Single Parent For many years, children growing up in a single parent family have been viewed as different. Being raised by only one parent seems impossible to many yet over the decades it has become more prevalent. In today s society, many children have grown up to become emotionally stable and successful, whether they had one or two parents to show them the rocky path that life bestows upon all human beings. The problem lies in the difference of children raised by single parents versus children raised by both a mother and a father. Does a child need both parents? Does a young boy need a father figure around? Does the government provide help for single parents? What role do†¦show more content†¦However, even though this may seem impossible, it can be done. As this subject continues to be looked down on people must realize that single parents are becoming more common in today s world. Since 1995 the American family structure for children ages fourteen to eighteen consists of forty-two percent living in a first marriage, family with both parents, twenty-two percent living in a second marriage step-family, twenty-one percent living in a single parent, divorced or separated family, six percent living in a single parent never married family and three percent living in a single parent widowed family. This is an extremely scary statistic considering that fifty eight percent of children in America are living in a single parent family. This is a chilling percentage because it shows how little faith is put into a relationship before actually deciding to have children. Unfortunately not all single-parents take the time to perform the vital tasks needed to raise their children. Parents who think they would never be able to provide emotional stabil ity for their children by themselves should have taken the time to think this through before deciding to become parents. 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