Changeset 102 in t29-www
- Timestamp:
- Jul 19, 2009, 5:05:10 AM (15 years ago)
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en/communication/measurement.shtm
r99 r102 29 29 <h2><!--#echo var="title" --></h2> 30 30 31 <p>Measurement- and Experimental technology can link Communication and Computer 32 Technology. Measurement technology has a long history and there have been nice and 33 remarkable devices.</p> 34 <!-- 31 35 <p>Professionals can see many beautiful measurement devices, from the complex mirror galvanometer (a piece from the German Kaiserzeit) to the scintillation measuring station with counting devices from several epoches (since 1956), used for measurement of radioactivity.</p> 36 --> 37 38 <div class="box left"> 39 <img src="/shared/photos/kommunikationstechnik/experimente.jpg" alt="Some of the experimental physics devices" width="396" height="451" class="nomargin-bottom" /> 40 <p class="bildtext"> 41 This picture shows some devices from the "experimental physics" area. You 42 will probably note the use of "natural" materials (wood, glass, metal) and the 43 well-designed very simplified interface that makes comprehension simple. 44 <br/>We will go into detail for some of the devices shown on the left. 45 </p> 46 <div class="clear"></div> 47 </div> 32 48 33 49 <div class="box left"> 34 50 <img src="/shared/photos/start/universalmessgeraet2.jpg" alt="Fotografie des Universalmeßgerätes" width="396" height="300" class="nomargin-bottom" /> 35 51 <p class="bildtext"> 36 This is a remarkably functional, big and beautiful all-purpose measurement device made by Siemens & Halske (about 19 10). At that time even simple objects of utulity were made lovely detailed. This device was used as auxiliary device for morsing purposes.52 This is a remarkably functional, big and beautiful all-purpose measurement device made by Siemens & Halske (about 1905). At that time even simple objects of utulity were made lovely detailed. This device was used as auxiliary device for morsing purposes in the national administration of the German Empire. 37 53 </p> 38 54 <div class="clear"> </div> … … 44 60 <div class="clear"> </div> 45 61 </div> 46 62 63 <div class="box left"> 64 <img src="/shared/photos/kommunikationstechnik/h&b-galvanometer.jpg" alt="Photography of a mirror galvanometer" width="396" height="436" /> 65 <div class="bildtext"> 66 <p>Until the invention of measurement amplifiers, measuring very small voltages 67 and currents was a big problem. To do that job, moving coil devices had to be 68 very sensitive. This was realized with a moving coil that was mounted on a 69 torsion wire. The reflecting mirror at the lower end of the wire was spotted by 70 a light ray, so the whole composition acts like a very long "light needle". 71 By this way very long needle lengths (multiple meters) could be simulated. 72 Such a galvanometer must be set up absolutely horizontally and vibration-free. 73 <br/>The <b>Mirror Galvanometer</b> by Hartmann Braun is 74 a simple and functional demonstration model from the 1920s.</p> 75 </div> 76 <div class="clear"> </div> 77 </div> 78 79 <div class="box left"> 80 <img src="/shared/photos/kommunikationstechnik/loewe-kathodenstrahl.jpg" alt="Photography of the cathode ray tube" width="396" height="189" /> 81 <p class="bildtext"> 82 At the time where there was no television and no oscilloscope yet, the 83 <b>Cathode Ray Tube</b> was a sensation, especially at school. This was one of 84 the very first experiments where students could see that electrons have 85 almost no inertia, so they can be deflected easily at the presence of an 86 electric field. 87 <br/>This tube (with power supply on the left) from the German company 88 <b>Loewe</b> is an historical piece from the 1930s. It measures about 89 50 cm! 90 </p> 91 </div> 92 93 47 94 <!-- paragraph: AEG Oszi. Translated/Started at 28.07.08--> 48 95 <div class="box right"> … … 59 106 absolutely with this device, you always need reference sizes. 60 107 </p> 61 108 <div class="clear"> </div> 62 109 </div> 63 110 64 <p>In addition to the measurement technology that mostly covers the big area of counting, there are also exhibits which show how electronics was taught in schools since 1930. The picture stated below shows at the top demo models for tube technology (approx. 1935) and galvanometers, demo tubes (approx. 1939) and an oscillating circuit (variometer) under it.</p> 111 <div class="box left"> 112 <img src="/shared/photos/kommunikationstechnik/phywe-oszi.jpg" alt="Photography of a Phywe demonstration oscilloscope" width="396" height="269" class="nomargin-bottom" /> 113 <p class="bildtext"> 114 The "Physikalischen Werkstätten" (<i>phsyical facilities</i>), <b>Phywe</b>, 115 have built this small oscilloscope for demonstration purposes that can be 116 used to show the electromagnetic interaction of an electron beam in E/B fields. 117 Since (CRT driven) television got a mass medium, these experiments 118 were state-of-art at those days. 119 </p> 120 <div class="clear"> </div> 121 </div> 65 122 66 <p>On the third shelf (counted from the top, in the background) the 67 picture shows models of transistorized circuits (from 68 approximately 1965). The big white board in front of these models 69 is an experience system from Leybold from the early 1970. At that 70 time, the subject "digital electonics" was taught in the school. 71 It was a wonderful combination of physics, informatics and 72 mathematics. Unfortunately that time is over, too. In ordinary 73 schools, there is no more time for electronics in the curriculars. 74 Of course that is not totally wrong: The every day electonics have 75 developed too much away from the basis. Thus, the youngest 76 generation has no more idea how it's Ipod or mobile phone works 77 and they do not even want to learn the basics of electronics 78 because the relationship is too complex.</p> 123 <div class="box left"> 124 <img src="/shared/photos/kommunikationstechnik/neva-funktechnik.jpg" alt="Photography of the Neva Experimental system" width="396" height="280" class="nomargin-bottom" /> 125 <p class="bildtext">With the <b>NEVA radio technology system</b>, students could 126 do challenging experiments like measuring the wave lengths in the VHF area 127 with the Lecher lines. <!-- Das mit den 300V ist Bloedsinn, weil die Stroeme 128 niedrig sind => ungefaehrlich. --> 129 </p> 130 <div class="clear"> </div> 131 </div> 79 132 80 <div class="box center"> 81 <img src="/shared/photos/kommunikationstechnik/schulphysik.jpg" width="431" height="718" alt="Electronical tools used in schools in the 30s, along with the digital experience system, 1970." /> 82 </div> 133 <div class="box left"> 134 <img src="/shared/photos/kommunikationstechnik/digitalexperimentiersystem.jpg" alt="photography of an electronic experimental system for use in schools" width="396" height="509" class="nomargin-bottom" /> 135 <p class="bildtext">This big white board is an experience system from 136 <b>Leybold</b> from the early 1970s. At that time, the subject 137 "digital electonics" was taught in the school. Students could set up 138 logic systems like binary counters, full adders, flip-flops, multiplexer, 139 etc. This was quite fascinating for students at that time. Today, in ordinary 140 schools, there is no more time for electronics in the curriculars.</p> 141 <div class="clear"> </div> 142 </div> 83 143 144 <div class="box left"> 145 <img src="/shared/photos/kommunikationstechnik/frequenz-ereigniszaehler.jpg" alt="Photography of different frequency- and event counters" width="396" height="500" class="nomargin-bottom" /> 146 <p class="bildtext"><b>Calculating requires counting</b> 147 <br/>Last but not least we show a composition of (frequency) counters from 148 different epoches. There are, among others, devices equipped with tubes (57 149 electron tubes) or discrete transistor logic (mostly germanium). 150 The different counting tubes (e.g. E1T or GC10B) and the very different 151 display types are quite impressive.</p> 152 <div class="clear"> </div> 153 </div> 84 154 </div><!-- end of content --> 85 155 <!--#include virtual="/en/inc/menu.inc.shtm" --> -
en/computer/tabulating-machine.shtm
r93 r102 47 47 we own other machines that are also operational to perform card driven EDP, 48 48 that is, devices for creation, sorting, mixing, etc. the cards.</p> 49 50 <p>Our tabluating machine is now even capable of calculating and printing bank 51 statements as well as multiplying and dividing. 52 <!-- <LOL> --> 53 <br/>In the year 1959 some BULL engineer asked himself why there was not some 54 algorithm for the tabulating machine somewhere outside to compute square roots. 55 Since he was bored, he knew already dozens of simple algorithms he learned 56 in his study of computer science and he wanted to gouge his friends, he 57 bet them that you could compute square roots of any real number with a 58 tabulating machine. Since his friends have not studied computer science, 59 they bet against it. The engineer made some programming efforts and won 60 the bet. We came across that program, so we are currently trying to get 61 it back running, so we can relive that historical moment. <!-- </LOL> --> 62 </p> 49 63 50 64 <p><small>We would like to thank the <a href="www.feb-d.de">F.E.B. -
en/news.shtm
r100 r102 13 13 14 14 <!--#include virtual="/en/inc/head.inc.shtm" --> 15 16 <!-- Well... quite simple ;-) --> 17 <link href="http://page2rss.com/rss/15c37d8c11d3729e650502a0881277e4" title="Get a nifty RSS feed from this list" type="application/rss+xml" rel="alternate" /> 15 18 <meta name="t29.SVN" content="$Id: search.shtm 64 2008-12-15 22:55:17Z sven $" /> 16 19 <meta name="t29.comment" content="13.07.09: Neu" /> … … 21 24 <h2><!--#echo var="title" --></h2> 22 25 23 <p> <i>This page is currently (13.07.2009) under construction. Please come back24 again later.</i></p>26 <p>This is a news feed for the recent changes on our homepage. The latest 27 posts are on top.</p> 25 28 26 29 <ul class="news-feed"> 30 <li><h3>July 2009</h3> 31 We're urgently <a href="/en/search.shtm" class="go">looking for manuals for an Analex drum printer</a> 32 </li> 33 <li><h3>July 2009</h3> 34 Our <a href="/en/communication/measurement.shtm">Measurement technology</a> collection was extended for experimental technology thanks to a donation from a german school 35 </li> 36 <li><h3>June 2009</h3> 37 Extracting roots with the <a href="/en/computer/tabulating-machine.shtm">Tabulating Machine</a>! Virtually impossible, but we tried to reconstruct some 50-years-old bet. 38 </li> 39 <li><h3>March 2009</h3> 40 Gain an <a href="/en/devices/telefunken_t40w.shtm">exceptional insight the Telefunken T40W</a>. 41 </li> 42 </ul> 27 43 </div><!-- end of content --> 28 44 <!--#include virtual="/en/inc/menu.inc.shtm" --> -
en/search.shtm
r99 r102 17 17 <meta name="DC.Subject" content="technikum29 what we are seeking/looking for..." /> 18 18 <meta name="t29.SVN" content="$Id$" /> 19 <meta name="t29.germanoriginal" content="26.07.2008/v5.7.23" /> 20 <meta name="t29.thistranslation" content="28.07.2008/v5.7.23" /> 21 <meta name="t29.comment" content="Full recent translation from de" /> 22 <!--changelog: 29.08.2007/v5.7.6 based on 29.08.2007/v5.7.5 (nur Teile auf Anweisung!) --> 19 <meta name="t29.thistranslation" content="19.07.2009" /> 20 <meta name="t29.comment" content="+Analex High Speed Printer -Type wheel" /> 23 21 </head> 24 22 <body> … … 26 24 <div id="content"> 27 25 <h2><!--#echo var="title" --></h2> 26 27 28 <div class="box left"> 29 <img src="/shared/photos/rechnertechnik/anelex.jpg" alt="Anelex High Speed Printer" width="299" height="271" class="nomargin-bottom" /> 30 <div class="bildtext"> 31 <h3>Analex High Speed Printer manuals</h3> 32 <p>We are looking for technical documentation for this <b>Analex High Speed Printer 33 Series 5-144-5A</b> or <b>Series 5A-144</b>. The (drum) printer was attached to 34 an Electrologica EL X8 (year of manufacture 1965), perhaps it's mentioned in 35 the manuals of that computer.</p> 36 <p>Any hints would be appreciated!</p> 37 </div> 38 <div class="clear"></div> 39 </div> 28 40 29 41 <div class="box left"> … … 33 45 <p>This is the printer from our <a href="/en/computer/tabulating-machine.shtm#bull10">BULL GAMMA 10</a>, but 34 46 unfortunately it is incomplete: The small case with the auxillary electronics is missing. Therefore we are looking for a complete printer or a part from another GAMMA 10 setup.</p> 35 36 47 </div> 48 <div class="clear"></div> 37 49 </div> 38 50 39 51 <div class="box left"> 40 52 <img src="/shared/photos/rechnertechnik/plattenstapel.jpg" alt="disk pack" width="237" height="189" class="nomargin-bottom" /> 41 <p class="bildtext"> 42 We currently have problems with the adjustment of the disc head 43 from our UNIVAC 8425. There was special "callibration disc" (looking 44 like the disc in the picture on the left) for the adjustment. It's 45 actually impossible to adjust the heads without that disc. Therefore 46 we're looking urgently for such a disc, on a loan basis, too. 47 </p> 48 <div class="clear"></div> 53 <div class="bildtext"> 54 <h3>UNIVAC callibration disc</h2> 55 <p>We currently have problems with the adjustment of the disc head 56 from our UNIVAC 8425. There was special "callibration disc" (looking 57 like the disc in the picture on the left) for the adjustment. It's 58 actually impossible to adjust the heads without that disc. Therefore 59 we're looking urgently for such a disc, on a loan basis, too. 60 </p> 61 </div> 62 <div class="clear"></div> 49 63 </div> 50 64 … … 60 74 <li>... and everything that is suitable for our collection</li> 61 75 </ul> 62 63 <div class="box left">64 <img src="/shared/photos/rechnertechnik/typenrad.jpg" alt="character wheel, type wheel" />65 <div class="bildtext">66 <h3>Type wheel</h3>67 <p>We are looking for a replacement for the type wheel displayed at the left. The diameter is about 9cm. It was used in the console printer from the <a href="/computer/univac9400.shtm">UNIVAC mainframe</a> and was probably also used in other printers.68 <br/>Unfortunately the type wheel on the left has a wrong order of the letters.</p>69 </div>70 </div>71 76 72 77 </div><!-- end of content --> -
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