From 9b83439d9d0204a5092772ae46ef43cea42dbc7c Mon Sep 17 00:00:00 2001 From: thing1 Date: Thu, 5 Sep 2024 18:20:24 +0100 Subject: added some nice stuff --- other/day1/workexperience.ps | 288 ++++++++++++++++++------------------------- 1 file changed, 123 insertions(+), 165 deletions(-) (limited to 'other/day1/workexperience.ps') diff --git a/other/day1/workexperience.ps b/other/day1/workexperience.ps index 1cabf19..4a234ab 100644 --- a/other/day1/workexperience.ps +++ b/other/day1/workexperience.ps @@ -1,6 +1,6 @@ %!PS-Adobe-3.0 -%%Creator: groff version 1.23.0 -%%CreationDate: Tue Jun 4 09:01:40 2024 +%%Creator: groff version 1.22.4 +%%CreationDate: Thu Sep 5 13:14:44 2024 %%DocumentNeededResources: font Times-Bold %%+ font Times-Italic %%+ font Times-Roman @@ -8,9 +8,9 @@ %%+ file wirebonds.ps %%+ file scope.ps %%+ file graph.ps -%%+ procset grops 1.23 0 +%%+ procset grops 1.22 4 %%LanguageLevel: 2 -%%Pages: 7 +%%Pages: 6 %%PageOrder: Ascend %%DocumentMedia: Default 612 792 0 () () %%Orientation: Portrait @@ -19,7 +19,7 @@ %%PageMedia: Default %%EndDefaults %%BeginProlog -%%BeginResource: procset grops 1.23 0 +%%BeginResource: procset grops 1.22 4 %!PS-Adobe-3.0 Resource-ProcSet /setpacking where{ pop @@ -27,7 +27,6 @@ currentpacking true setpacking }if /grops 120 dict dup begin -% The ASCII code of the space character. /SC 32 def /A/show load def /B{0 SC 3 -1 roll widthshow}bind def @@ -49,18 +48,16 @@ true setpacking /R{moveto 0 SC 3 -1 roll widthshow}bind def /S{moveto 0 exch ashow}bind def /T{moveto 0 exch 0 SC 5 2 roll awidthshow}bind def -% name size font SF - /SF{ findfont exch [exch dup 0 exch 0 exch neg 0 0]makefont dup setfont [exch/setfont cvx]cvx bind def }bind def -% name a c d font MF - /MF{ findfont [5 2 roll -0 3 1 roll % b +0 3 1 roll neg 0 0]makefont dup setfont [exch/setfont cvx]cvx bind def @@ -69,19 +66,13 @@ dup setfont /RES 0 def /PL 0 def /LS 0 def -% Enable manual feed. -% MANUAL - /MANUAL{ statusdict begin/manualfeed true store end }bind def -% Guess the page length. -% This assumes that the imageable area is vertically centered on the page. -% PLG - length /PLG{ gsave newpath clippath pathbbox grestore exch pop add exch pop }bind def -% BP - /BP{ /level0 save def 1 setlinecap @@ -99,61 +90,47 @@ LS{ level0 restore showpage }def -% centerx centery radius startangle endangle DA - /DA{ newpath arcn stroke }bind def -% x y SN - x' y' -% round a position to nearest (pixel + (.25,.25)) /SN{ transform .25 sub exch .25 sub exch round .25 add exch round .25 add exch itransform }bind def -% endx endy startx starty DL - -% we round the endpoints of the line, so that parallel horizontal -% and vertical lines will appear even /DL{ SN moveto SN lineto stroke }bind def -% centerx centery radius DC - /DC{ newpath 0 360 arc closepath }bind def /TM matrix def -% width height centerx centery DE - /DE{ TM currentmatrix pop translate scale newpath 0 0 .5 0 360 arc closepath TM setmatrix }bind def -% these are for splines /RC/rcurveto load def /RL/rlineto load def /ST/stroke load def /MT/moveto load def /CL/closepath load def -% fill the last path -% r g b Fr - /Fr{ setrgbcolor fill }bind def -% c m y k Fk - /setcmykcolor where{ pop /Fk{ setcmykcolor fill }bind def }if -% g Fg - /Fg{ setgray fill }bind def -% fill with the "current color" /FL/fill load def /LW/setlinewidth load def /Cr/setrgbcolor load def @@ -162,7 +139,6 @@ pop /Ck/setcmykcolor load def }if /Cg/setgray load def -% new_font_name encoding_vector old_font_name RE - /RE{ findfont dup maxlength 1 index/FontName known not{1 add}if dict begin @@ -177,7 +153,6 @@ dup/FontName exch def currentdict end definefont pop }bind def /DEFS 0 def -% hpos vpos EBEGIN - /EBEGIN{ moveto DEFS begin @@ -185,13 +160,11 @@ DEFS begin /EEND/end load def /CNT 0 def /level1 0 def -% llx lly newwid wid newht ht newllx newlly PBEGIN - /PBEGIN{ /level1 save def translate div 3 1 roll div exch scale neg exch neg exch translate -% set the graphics state to default values 0 setgray 0 setlinecap 1 setlinewidth @@ -210,10 +183,6 @@ newpath /CNT countdictstack def userdict begin /showpage{}def -% -% Any included setpagedevice should be ignored. -% See: http://www.w-beer.de/doc/ps/. -% /setpagedevice{}def mark }bind def @@ -271,58 +240,56 @@ def/PL 792 def/LS false def/ENC0[/asciicircum/asciitilde/Scaron/Zcaron %%BeginPageSetup BP %%EndPageSetup -/F0 12/Times-Bold@0 SF(Notes on w)255.228 123 Q(ork done)-.12 E/F1 10 -/Times-Italic@0 SF(Lucas Standen + Nig)242.675 159 Q(el Standen)-.1 E/F2 -10/Times-Roman@0 SF(29/5/24)290.72 177 Q/F3 10/Times-Bold@0 SF 2.5 +/F0 12/Times-Bold@0 SF(Notes on w)237.228 123 Q(ork done)-.12 E/F1 10 +/Times-Italic@0 SF(Lucas Standen + Nig)224.675 159 Q(el Standen)-.1 E/F2 +10/Times-Roman@0 SF(29/5/24)272.72 177 Q/F3 10/Times-Bold@0 SF 2.5 (1. Ho)72 213 R 2.5(wt)-.1 G(he curr)-2.5 E (ent of an LED can effect the wa)-.18 E -.1(ve)-.25 G (length of the output).1 E 2.5(1.1. The)72 237 R(experiment)2.5 E F2 -.447(In the e)72 252.6 R .447(xperiment we measured ho)-.15 F 2.947(wt) --.25 G .447(he w)-2.947 F -2.25 -.2(av e)-.1 H .447 -(length of an LED is ef).2 F .447 -(fected by the current passed through it. The re-)-.25 F -(sults lead one to belie)72 264.6 Q .3 -.15(ve t)-.25 H +(In the e)72 252.6 Q(xperiment we measured ho)-.15 E 2.5(wt)-.25 G(he w) +-2.5 E -2.25 -.2(av e)-.1 H(length of an LED is ef).2 E +(fected by the current passed through it.)-.25 E +(The results lead one to belie)72 264.6 Q .3 -.15(ve t)-.25 H (hat as current increases the w).15 E -2.25 -.2(av e)-.1 H -(length does too.).2 E 2.414 -.8(We m)72 288.6 T .815(ade sure to measu\ -re using a pulse, rather than a continuous current, this is to ensure t\ -hat the thermal ener).8 F(gy)-.18 E .113(that the LED gi)72 300.6 R -.15 -(ve)-.25 G 2.613(so).15 G -.25(ff)-2.613 G 2.613(,d).25 G .113 -(oes not ef)-2.613 F .113(fect its results; ho)-.25 F(we)-.25 E -.15(ve) --.25 G 2.613(rw).15 G 2.613(eb)-2.613 G(elie)-2.613 E .413 -.15(ve o) --.25 H .113(ur pulse w).15 F .112(as still to long and that it did ef) --.1 F(fect)-.25 E(the results.)72 312.6 Q .772(The pulse is generated b\ -y an Arduino with a simple script running, allo)72 336.6 R .772 -(wing me to press a b)-.25 F .772(utton that triggers the)-.2 F(po)72 -348.6 Q .871(wer supply and the spectrometer \(tool used to measure w) --.25 F -2.25 -.2(av e)-.1 H .871(lengths\). Before starting the e).2 F -.871(xperiment, we took a)-.15 F(reading of ambient temperature, as we \ -were looking at current \(which ef)72 360.6 Q(fects temperature\) ag) --.25 E(ainst w)-.05 E -2.25 -.2(av e)-.1 H(length.).2 E 1.6 -.8(We f)72 -384.6 T(ound the temperature to be).8 E F3(20 deg C)2.5 E F2(.)A F3 2.5 -(1.1.1. T)72 420.6 R(riggering cir)-.74 E(cuit)-.18 E F2 .75 -(The triggering circuit w)72 436.2 R .75(as k)-.1 F .75 +(length does too.).2 E 1.6 -.8(We m)72 288.6 T(ade sure to measure usin\ +g a pulse, rather than a continuous current, this is to ensure that the\ + thermal).8 E(ener)72 300.6 Q(gy that the LED gi)-.18 E -.15(ve)-.25 G +2.5(so).15 G -.25(ff)-2.5 G 2.5(,d).25 G(oes not ef)-2.5 E +(fect its results; ho)-.25 E(we)-.25 E -.15(ve)-.25 G 2.5(rw).15 G 2.5 +(eb)-2.5 G(elie)-2.5 E .3 -.15(ve o)-.25 H(ur pulse w).15 E +(as still to long and)-.1 E(that it did ef)72 312.6 Q(fect the results.) +-.25 E(The pulse is generated by an Arduino with a simple script runnin\ +g, allo)72 336.6 Q(wing me to press a b)-.25 E(utton that)-.2 E +(triggers the po)72 348.6 Q +(wer supply and the spectrometer \(tool used to measure w)-.25 E -2.25 +-.2(av e)-.1 H(lengths\). Before starting the).2 E -.15(ex)72 360.6 S(p\ +eriment, we took a reading of ambient temperature, as we were looking a\ +t current \(which ef).15 E(fects)-.25 E(temperature\) ag)72 372.6 Q +(ainst w)-.05 E -2.25 -.2(av e)-.1 H(length.).2 E 1.6 -.8(We f)72 396.6 +T(ound the temperature to be).8 E F3(20 deg C)2.5 E F2(.)A F3 2.5 +(1.1.1. T)72 432.6 R(riggering cir)-.74 E(cuit)-.18 E F2 +(The triggering circuit w)72 448.2 Q(as k)-.1 E (ept simple, with most things being done in code, one thing of note ho) --.1 F(we)-.25 E -.15(ve)-.25 G 3.25(ri).15 G 3.25(st)-3.25 G .75 -(hat the)-3.25 F(push b)72 448.2 Q -(utton used as a trigger is in a push to mak)-.2 E 2.5(ec)-.1 G -(on\214guration.)-2.5 E 1.6 -.8(To w)72 472.2 T(ire the circuit follo).8 -E 2.5(wt)-.25 G(hese steps:)-2.5 E(1\) Attach a b)72 496.2 Q +-.1 E(we)-.25 E -.15(ve)-.25 G 2.5(ri).15 G(s)-2.5 E(that the push b)72 +460.2 Q(utton used as a trigger is in a push to mak)-.2 E 2.5(ec)-.1 G +(on\214guration.)-2.5 E 1.6 -.8(To w)72 484.2 T(ire the circuit follo).8 +E 2.5(wt)-.25 G(hese steps:)-2.5 E(1\) Attach a b)72 508.2 Q (utton between pin 2, and ground.)-.2 E -(2\) Attach pin 7 to the spectroscope')72 520.2 Q 2.5(sl)-.55 G -2.15 +(2\) Attach pin 7 to the spectroscope')72 532.2 Q 2.5(sl)-.55 G -2.15 -.25(iv e)-2.5 H (input, and attach its ground to a ground rail on the bread board.)2.75 -E(3\) Attach pin 8 to the PSU')72 544.2 Q 2.5(sl)-.55 G -2.15 -.25(iv e) +E(3\) Attach pin 8 to the PSU')72 556.2 Q 2.5(sl)-.55 G -2.15 -.25(iv e) -2.5 H(input and its ground to a shared ground.)2.75 E(4\) Using the Ar\ -duino ide, \215ash the code \(can be found on the USB you g)72 568.2 Q +duino ide, \215ash the code \(can be found on the USB you g)72 580.2 Q -2.25 -.2(av e)-.05 H(me\).)2.7 E -(5\) Set up the program on the PSU to ha)72 592.2 Q .3 -.15(ve a p)-.2 H +(5\) Set up the program on the PSU to ha)72 604.2 Q .3 -.15(ve a p)-.2 H (ulse duration as long as you need, and then press the b).15 E(utton.) --.2 E(The code for this can be seen here as well:)72 619.8 Q 0 Cg EP +-.2 E(The code for this can be seen here as well:)72 631.8 Q 0 Cg EP %%Page: 2 2 %%BeginPageSetup BP %%EndPageSetup -/F0 10/Times-Roman@0 SF(-2-)300.17 48 Q(const int instrument1Pin = 7; /\ +/F0 10/Times-Roman@0 SF(-2-)282.17 48 Q(const int instrument1Pin = 7; /\ / Pin for instrument 1 \(0V to 5V\) Spectroscope)77 84 Q (const int instrument2Pin = 8; // Pin for instrument 2 \(5V to 0V\) PSU) 77 108 Q(const int triggerPin = 2; // the pin the b)77 132 Q @@ -343,25 +310,24 @@ rument2Pin, HIGH\); // HIGH corresponds to 5V \(max v)97 276 Q(alue\)) (delay\(pulseDurationInMs - psuDelayInMs\);)117 420 Q (digitalWrite\(instrument2Pin, HIGH\);)117 456 Q(delay\(psuDelayInMs\);) 117 468 Q(digitalWrite\(instrument1Pin, LO)117 480 Q(W\);)-.35 E -(delay\(1000\);)117 492 Q(})97 504 Q(})77 528 Q .4 LW 540 530.5 72 530.5 -DL 540 74.5 540 530.5 DL 72 74.5 540 74.5 DL 72 530.5 72 74.5 DL .358 -(It is relati)72 543.6 R -.15(ve)-.25 G .358(ly simple in function, whe\ -n the switch on pin 2 goes high, it will send a lo).15 F 2.857(wt)-.25 G -2.857(ot)-2.857 G .357(he PSU \(the PSU is ac-)-2.857 F(ti)72 555.6 Q -.399 -.15(ve l)-.25 H .599 -.25(ow i).15 H 2.599(nt).25 G .099 -(his case\) and a high to the spectrometer \(acti)-2.599 F .4 -.15(ve h) --.25 H .1 -(igh\). The setup function \(de\214ned in the \214rst set of {}\) is).15 -F .243 -(used to initialise the pins, and the loop function will be run as f)72 -567.6 R .243(ast as the microcontroller can. It constantly checks if)-.1 -F .879(the trigger pin goes lo)72 579.6 R 3.379(w\()-.25 G .879(the b) --3.379 F .879(utton has shorted pin 2\) and if it does it sends a pulse\ - of pulseDurationInMS do)-.2 F(wn)-.25 E .657(each wire. The v)72 591.6 -R .657(ariable psuDelayInMs is used to set ho)-.25 F 3.156(wm)-.25 G -.656(uch sooner the PSU will trigger compared to the spec-)-3.156 F -(trometer)72 603.6 Q(.)-.55 E/F1 10/Times-Bold@0 SF 2.5(1.2. The)72 -639.6 R -.18(re)2.5 G(sults).18 E F0 1.6 -.8(We m)72 655.2 T +(delay\(1000\);)117 492 Q(})97 504 Q(})77 528 Q .4 LW 504 530.5 72 530.5 +DL 504 74.5 504 530.5 DL 72 74.5 504 74.5 DL 72 530.5 72 74.5 DL +(It is relati)72 543.6 Q -.15(ve)-.25 G(ly simple in function, when the\ + switch on pin 2 goes high, it will send a lo).15 E 2.5(wt)-.25 G 2.5 +(ot)-2.5 G(he PSU \(the)-2.5 E(PSU is acti)72 555.6 Q .3 -.15(ve l)-.25 +H .5 -.25(ow i).15 H 2.5(nt).25 G +(his case\) and a high to the spectrometer \(acti)-2.5 E .3 -.15(ve h) +-.25 H(igh\). The setup function \(de\214ned in).15 E(the \214rst set o\ +f {}\) is used to initialise the pins, and the loop function will be ru\ +n as f)72 567.6 Q(ast as the)-.1 E +(microcontroller can. It constantly checks if the trigger pin goes lo)72 +579.6 Q 2.5(w\()-.25 G(the b)-2.5 E(utton has shorted pin 2\) and if it) +-.2 E(does it sends a pulse of pulseDurationInMS do)72 591.6 Q +(wn each wire. The v)-.25 E(ariable psuDelayInMs is used to set ho)-.25 +E(w)-.25 E +(much sooner the PSU will trigger compared to the spectrometer)72 603.6 +Q(.)-.55 E/F1 10/Times-Bold@0 SF 2.5(1.2. The)72 639.6 R -.18(re)2.5 G +(sults).18 E F0 1.6 -.8(We m)72 655.2 T (easured results using a green LED, and our pulse').8 E 2.5(sh)-.55 G (ad a width of 450ms)-2.5 E 2.5(Ag)72 679.2 S (raph of results can be found belo)-2.5 E(w:)-.25 E 0 Cg EP @@ -369,8 +335,8 @@ R .657(ariable psuDelayInMs is used to set ho)-.25 F 3.156(wm)-.25 G %%BeginPageSetup BP %%EndPageSetup -/F0 10/Times-Roman@0 SF(-3-)300.17 48 Q 14 14 468 819 -136 238 72 220 -PBEGIN +/F0 10/Times-Roman@0 SF(-3-)282.17 48 Q 14 14 432 819 -125.538 238 72 +209.539 PBEGIN %%BeginDocument: graph.ps %!PS-Adobe-3.0 %%Creator: GIMP PostScript file plug-in V 1.17 by Peter Kirchgessner @@ -2802,32 +2768,31 @@ showpage end %%EOF %%EndDocument -end PEND/F1 10/Times-Italic@0 SF 2.5(ya)72.74 235.6 S -(xis = wavelength \(nm\), x axis = curr)-2.5 E(ent \(mA\))-.37 E F0 -2.997(Im)72 251.2 S .497(odelled a line of best \214t for this graph to\ - be y = 1/9x + 568.4, with X being the current in mA, and Y being the) --2.997 F -.1(wa)72 263.2 S -.15(ve)-.1 G 1.585(length in nm; ho).15 F -(we)-.25 E -.15(ve)-.25 G 4.085(rt).15 G 1.585(his is just by e)-4.085 F -1.585(ye. From this one can assume the temperature coef)-.15 F 1.584 -(\214cient to be 1/9)-.25 F(nm/mA.)72 275.2 Q .222(The results sho)72 -299.2 R 2.722(wt)-.25 G .222(hat as the LED had more current \215o) --2.722 F .223 -(wing through it, the colour of the light it produced changed to)-.25 F -2.5(ah)72 311.2 S(igher w)-2.5 E -2.25 -.2(av e)-.1 H(length \(to).2 E --.1(wa)-.25 G(rds red\).).1 E .305(It is w)72 335.2 R .305(orth noting \ -that when we reduced the pulse duration to 300ms instead of 450ms, at 3\ -0mA the w)-.1 F -2.25 -.2(av e)-.1 H .305(length fell).2 F .582 -(to 570.61nm, which suggests that e)72 347.2 R -.15(ve)-.25 G 3.082(no) -.15 G 3.082(nap)-3.082 G .582 -(ulse as small as 450ms the heating of the LED has ef)-3.082 F .582 -(fected its w)-.25 F -2.25 -.2(av e)-.1 H(-).2 E(length.)72 359.2 Q .186 -(Of note we found that there w)72 383.2 R .186(as a tin)-.1 F 2.686(yd) --.15 G .186(elay between when the when the spectrometer went high, and \ -the PSU went)-2.686 F(lo)72 395.2 Q 1.3 -.65(w, w)-.25 H 2.5(ef).65 G +end PEND/F1 10/Times-Italic@0 SF 2.5(ya)72 225.139 S +(xis = wavelength \(nm\), x axis = curr)-2.5 E(ent \(mA\))-.37 E F0 2.5 +(Im)72 240.739 S(odelled a line of best \214t for this graph to be y = \ +1/9x + 568.4, with X being the current in mA, and Y)-2.5 E(being the w) +72 252.739 Q -2.25 -.2(av e)-.1 H(length in nm; ho).2 E(we)-.25 E -.15 +(ve)-.25 G 2.5(rt).15 G(his is just by e)-2.5 E +(ye. From this one can assume the temperature)-.15 E(coef)72 264.739 Q +(\214cient to be 1/9 nm/mA.)-.25 E(The results sho)72 288.739 Q 2.5(wt) +-.25 G(hat as the LED had more current \215o)-2.5 E +(wing through it, the colour of the light it produced)-.25 E +(changed to a higher w)72 300.739 Q -2.25 -.2(av e)-.1 H(length \(to).2 +E -.1(wa)-.25 G(rds red\).).1 E(It is w)72 324.739 Q(orth noting that w\ +hen we reduced the pulse duration to 300ms instead of 450ms, at 30mA th\ +e)-.1 E -.1(wa)72 336.739 S -.15(ve)-.1 G +(length fell to 570.61nm, which suggests that e).15 E -.15(ve)-.25 G 2.5 +(no).15 G 2.5(nap)-2.5 G(ulse as small as 450ms the heating of the LED) +-2.5 E(has ef)72 348.739 Q(fected its w)-.25 E -2.25 -.2(av e)-.1 H +(length.).2 E(Of note we found that there w)72 372.739 Q(as a tin)-.1 E +2.5(yd)-.15 G +(elay between when the when the spectrometer went high, and the)-2.5 E +(PSU went lo)72 384.739 Q 1.3 -.65(w, w)-.25 H 2.5(ef).65 G (ound it to be around 6us, we belie)-2.5 E .3 -.15(ve t)-.25 H -(his to be because the spectrometer is set to go high \214rst.).15 E -(This ef)72 419.2 Q(fect can be seen in this oscilloscope:)-.25 E 14 14 -385 385 -205 205 113.5 636.2 PBEGIN +(his to be because the spectrometer is set to go high).15 E(\214rst.)72 +396.739 Q(This ef)72 420.739 Q(fect can be seen in this oscilloscope:) +-.25 E 14 14 385 385 -205 205 95.5 637.739 PBEGIN %%BeginDocument: scope.ps %!PS-Adobe-3.0 %%Creator: GIMP PostScript file plug-in V 1.17 by Peter Kirchgessner @@ -62350,43 +62315,41 @@ showpage end %%EOF %%EndDocument -end PEND F1(The yellow tr)71.91 648.2 Q(aces is the spectr)-.15 E -(ometer)-.45 E 2.5(,t)-1.11 G(he blue is the PSU)-2.5 E/F2 10 -/Times-Bold@0 SF 2.5(1.3. T)72 684.2 R(ak)-.92 E(eaways)-.1 E F0 .689 -(From this e)72 699.8 R .689(xperience I think I should tak)-.15 F(ea) --.1 E -.1(wa)-.15 G 3.189(yt).1 G .689(hat, \214rst LED')-3.189 F 3.19 -(sa)-.55 G .69(re ef)-3.19 F .69(fected by temperature v)-.25 F .69 -(ery slightly)-.15 F 3.19(,a)-.65 G .69(nd that)-3.19 F .52 -(the equipment resolution/accurac)72 711.8 R 3.02(yi)-.15 G 3.02(si) --3.02 G .519(mportant to note, my results may be wrong, ho)-3.02 F(we) --.25 E -.15(ve)-.25 G 3.019(rt).15 G .519(he trend sho)-3.019 F .519 -(wn by that)-.25 F -(graph is correct, I \214nd this interesting and important.)72 723.8 Q 0 -Cg EP +end PEND F1(The yellow tr)72 649.739 Q(aces is the spectr)-.15 E(ometer) +-.45 E 2.5(,t)-1.11 G(he blue is the PSU)-2.5 E/F2 10/Times-Bold@0 SF +2.5(1.3. T)72 685.739 R(ak)-.92 E(eaways)-.1 E F0(From this e)72 701.339 +Q(xperience I think I should tak)-.15 E(ea)-.1 E -.1(wa)-.15 G 2.5(yt).1 +G(hat, \214rst LED')-2.5 E 2.5(sa)-.55 G(re ef)-2.5 E +(fected by temperature v)-.25 E(ery slightly)-.15 E(,)-.65 E +(and that the equipment resolution/accurac)72 713.339 Q 2.5(yi)-.15 G +2.5(si)-2.5 G(mportant to note, my results may be wrong, ho)-2.5 E(we) +-.25 E -.15(ve)-.25 G 2.5(rt).15 G(he)-2.5 E(trend sho)72 725.339 Q +(wn by that graph is correct, I \214nd this interesting and important.) +-.25 E 0 Cg EP %%Page: 4 4 %%BeginPageSetup BP %%EndPageSetup -/F0 10/Times-Roman@0 SF(-4-)300.17 48 Q(I')72 84 Q .689 -.15(ve b)-.5 H -(elie).15 E .689 -.15(ve t)-.25 H .389(his w).15 F .39(ork will help me\ - in further life, it really has been my \214rst glimpse into a real w) --.1 F .39(orking w)-.1 F .39(orld with)-.1 F(electronics, I look forw)72 -96 Q(ard to w)-.1 E(orking more on it.)-.1 E/F1 10/Times-Bold@0 SF 2.5 -(2. 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