fileadmin/content/institute/physik/bilder-und-dokumente-aktuell/6-forschung/material-culture/teixeira-miguel-material-culture-in-the-history-of-physics.-the-case-of-a-he-ne-laser.pdf
, government laboratories and educational institutions (Dwight 1984). Companies such as Xerox and Bell Laboratories were also costumers. Dwight considered that acquiring a complete laser instead of building [...] organize courses related to laser propagation. The first lasers were not visible. In 1962, scientists at Bell Laboratories discovered the He-Ne laser, the first visible (Bromberg 1991). These were challenging [...] as Columbia University, TRG Corporation, Westinghouse laboratories, IBM, Hughes Laboratories and Bell labs were among the race to be the first. For further information please see: https://history.aip
fileadmin/content/projekte/pecc/bilder/pecc/-2.3-pecc-vol.-1.pdf
five one six three nine two four one four one ((turns around)) ((10:15-10:40)) Teacher: ((rings a bell)) Class: ((pupils who have a card come to the front to give it back to the teacher)) Elias: how old [...] auch gleich. ((to Marta)) sie hat doch nur gesagt die buskinder in der sechsten stunde. ((the school bell rings)) ((38:49)) Teacher: goodbye everyone Class: goodbye misses and mister Tim: und herr
fileadmin/content/projekte/pecc/bilder/pecc/-2.4-pecc-vol.-1.pdf
((28:13- 34:53)) Teacher: ((rings a bell)) Class: ((pupils do not pay attention; some pupils continue playing the game; others fool around)) Teacher: ((rings the bell again)) ((35:03)) Class: ((pupils still
fileadmin/content/projekte/pecc/bilder/pecc/-2.5-pecc-vol.-1.pdf
030 031 032 033 034 035 036 037 038 039 040 041 042 043 044 045 046 047 048 049 050 051 ((the school bell rings)) Class: ((pupils clear up their tables and get ready for the English lesson)) Teacher okay [...] ((05:15-06:54)) ((pupils walk around in class, asking and answering questions)) Teacher: ((rings a bell)) < okay please give me my cards back.> Class: ((pupils with cards come to the front and return them [...] melvin start and then it´s leon´s turn okay? and then melvin leon melvin leon. when i do this ((rings a bell)) Class: [((some pupils put their heads on their knees))] Teacher: [i tel-] no < no no> i tell you
fileadmin/content/projekte/pecc/bilder/pecc/-2.6-pecc-vol.-1.pdf
ist der eingang Elias: man kann ja auch Teacher: no no no i want to go the door i want to [ring the bell] Elias: [go straight on] Teacher: ding dong Elias: go straight on ehm at ehm [(x)] Teacher: [turn] [...] 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 ((walks over to her desk and rings a bell)) Antonia: sophie es hat geklingelt Teacher: okay everyone switch off wir haben ein bisschen die zeit
fileadmin/content/projekte/pecc/bilder/pecc/-2.7-pecc-vol.-1.pdf
you very much> ((prompts in Toni's ear)) Toni: thank you very much Chris: okay (10.0) ((30:10)) ((a bell rings inside the classroom)) Teacher: sit down please Class: ((pupils mumble and return to their chairs)) [...] Class: ((pupils dance)) Marvin: dance Class: [((pupils keep on dancing, except for Emma))] [((the bell rings))] Marvin: [emma] Emma: du hast gesagt dance Teacher: yes Marvin: dance Teacher: but without
fileadmin/content/projekte/pecc/bilder/pecc/-2.8-pecc-vol.-1.pdf
morning mini monsters are so very busy [jumping up and jumping down] [((pupils jump up and down; the bell rings))] jumping up and jumping down jumping up and jumping down. jumping up and jumping down jumping [...] pass on the card)) Class: ((pupils who have passed on their card sit down again)) Teacher: ((rings a bell)) ((6:49)) carl stop it please. Pupil_x: ((returns the card to the teacher)) how are you? Teacher:
fileadmin/content/projekte/pecc/bilder/pecc/-2.9-pecc-vol.-1.pdf
047 048 049 050 051 Class: ((pupils put their things away)) Teacher: emma hurry up Emma: yes ((the bell rings)) Teacher: carl where is your pupil's book and your pencil case? wake up ((Carl gets his things [...] hello shelly Emma: e::hm (---) hi ((starts to walk around)) ((Maria walks up to the desk and rings a bell)) Maria: (xx) ice cream Carl: yes Emma: < ice cream> < ice cream> Maria: hello Carl: hello Emma: [hi] [...] pupils jump; the teacher points at them)) Class: nelly maria nelly ((the three pupils sit down)) [((the bell rings; the pupils stay where they are))] Teacher: [äh] simon says touch your nose Teacher & Class:
fileadmin/content/projekte/pecc/bilder/pecc/-2.13-pecc-vol.-1.pdf
and fill in the survey)) ((26:38-33:43)) Teacher: last minute one minute ((33:46-34:56)) ((rings a bell)) so my dears five ((counts with her fingers)) four three two one and psch zero my girls? lotte? it's [...] books)) Pupil_x: dreißig Teacher: thirty Class: ((pupils mumble)) ((56:05-56:23)) Teacher: ((rings a bell)) in the red box there are (--) there are the words listening to music meeting friends playing computer
fileadmin/content/projekte/pecc/bilder/pecc/-2.10-pecc-vol.-1.pdf
Class: one kilo of red peppers Teacher: one kilo of potatoes Class: [one kilo of potatoes] [((the bell rings))] Teacher: alright then (--) have a nice day go outside and have a break ((pupils get up))