{"id":1153,"date":"2024-09-30T15:14:51","date_gmt":"2024-09-30T08:14:51","guid":{"rendered":"https:\/\/dosen.unila.ac.id\/ahmadzakaria\/?p=1153"},"modified":"2024-10-01T09:04:18","modified_gmt":"2024-10-01T02:04:18","slug":"perhitungan-panjang-gelombang-menggunakan-javascript","status":"publish","type":"post","link":"https:\/\/dosen.unila.ac.id\/ahmadzakaria\/2024\/09\/30\/perhitungan-panjang-gelombang-menggunakan-javascript\/","title":{"rendered":"Perhitungan panjang gelombang menggunakan JavaScript"},"content":{"rendered":"

Didalam teori Gelombang Amplitudo Kecil, panjang gelombang dapat dihitung dengan menggunakan Persamaan Panjang Gelombang. Dengan menggunakan Java Scipts, panjang gelombang dapat dihitung dengan menggunakan program java script berikut ini,<\/p>\n

————————————-gelombang_javascipt.html—————————————-<\/p>\n

<html><head>
\n<script type=”text\/javascript” src=”LaTeXMathML.js”><\/script>
\nBila diketahui periode gelombang (T) dan kedalaman (d) dari persamaan gelombang amplitudo kecil sebagai berikut, <br><br>
\n<font color=”blue”>
\n<div align=”center”>
\n$\\displaystyle
\n{
\nL = \\frac{g.T^2}{2.\\pi}.tanh (\\frac{2.\\pi.d}{L})
\n}
\n$
\n<\/div>
\n<\/font>
\n<br>
\nDitanya: Berapakah panjang gelombang (L) pada kedalaman d? <br><br>
\nJawab: <br><br><\/p>\n

Untuk dapat menghitung panjang gelombang (L) pada kedalaman d maka,
\n<br><br>
\nMasukkan data T, d, dan g sebagai berikut,<br><br>
\n<title>Menghitung Panjang Gelombang<\/title>
\n<\/head><body>
\n<table>
\n<tbody><tr><td>
\n<form>
\n<pre>
\n<b>T :<\/b><input name=”T” type=”text”>
\n<b>d :<\/b><input name=”d” type=”text”>
\n<b>g :<\/b><input name=”g” type=”text”><input value=”hitung” onclick=”newton_raphson(this.form)” type=”button”>
\n<\/pre>
\n<\/form>
\n<\/td>
\n<\/tr><\/tbody><\/table><\/p>\n

<script type=”text\/javascript”>
\nfunction newton_raphson(jumlah)
\n{
\nT = jumlah.T.value ;
\nd = jumlah.d.value ;
\ng = jumlah.g.value ;
\nvar pi = Math.PI ;
\nvar x = 100;
\nvar dL = 2.0;
\nvar TDd = T;
\nvar dLo = g*((TDd)*(TDd))\/(2.0*pi);<\/p>\n

document.write(“<td>”)
\ndocument.write(“hasilnya adalah sebagai berikut:<br>”)
\ndocument.write(“<b> T = <\/b>” + T + “<br>”)
\ndocument.write(“<b> d = <\/b>” + d + “<br>”)
\ndocument.write(“<b> g = <\/b>” + g + “<br>”)
\ndocument.write(“<b> pi = <\/b>” + pi + “<br>”)
\ndocument.write(“<\/td>”)
\nvar dta = new Date( );
\nd_mila = dta.getMilliseconds()
\nd_seca = dta.getSeconds()
\nd_mina = dta.getMinutes()
\nd_jama = dta.getHours()
\nd_tgla = dta.getDate()
\nd_blna = dta.getMonth()
\nd_thna = dta.getFullYear()
\ndocument.write(” sstart : “+d_thna+”-“+d_blna+”-“+d_tgla+”-“+d_jama+”-“+d_mina+”-“+d_seca+”-“+d_mila+”<br>”);
\nwaktu_a = d_jama*3600 + d_mina*60 + d_seca + (d_mila\/1000)
\n\/\/ var a = new Array() ;<\/p>\n

do
\n{
\ni = i +1 ;
\ndLt = dL;
\ndk = 2.0*pi\/dL;
\ndkd = dk*d;
\nskd = 0.5*(Math.exp(dkd)-Math.exp(-1*dkd));
\nckd = 0.5*(Math.exp(dkd)+Math.exp(-1*dkd));
\ntkd = skd\/ckd ;
\nY = dLo*tkd-dL;
\ndY1 = (ckd*ckd)+(skd*skd);
\ndY2 = ckd*ckd;
\ndY3 = dY1\/dY2;
\ndY4 = -2.0*pi*d\/(dL*dL);
\ndYa = dLo*dY3*dY4-1.0;
\ndL = dL – ((Y)\/dYa);
\ndelta =Math.sqrt((dLt-dL)*(dLt-dL));
\ndocument.write(“<b> L = <\/b><b>”+ dL +”<\/b><br>”)<\/p>\n

}<\/p>\n

while(delta > 0.00000000000000000001);<\/p>\n

document.write(“<b> Iterasi = <\/b><b>”+ i +” times<\/b><br>”)
\ndocument.write(“<b> delta = <\/b><b>”+ delta +” <\/b><br>”)
\nX1 = TDd;
\nX2 = d\/dL;
\nX3 = 2.0*pi*X2;
\nX5 = 0.5*(Math.exp(2.0*pi*d\/dL) – Math.exp(-2.0*pi*d\/dL));
\nX6 = 0.5*(Math.exp(2.0*pi*d\/dL) + Math.exp(-2.0*pi*d\/dL));;
\nX4 = X5\/X6 ;
\nXa1 = d\/(g*(TDd*TDd)\/(2.0*pi));
\nX8 = 1.0\/X6;
\nX9 = 2.0*X3;
\nX10 = 0.5*(Math.exp(X9) – Math.exp(-1*X9));
\nX11 = 0.5*(Math.exp(X9) + Math.exp(-1*X9));
\nX12 = 0.5*(1.0+(X9\/X10));
\nX13 = X12*X4;
\nX7 = Math.sqrt((2.0*(X6*X6))\/(X9+X10));
\nX14 = (pi*pi)\/(2.0*(X4*X4));
\nCo = dLo\/TDd;
\nC = dL\/TDd;<\/p>\n

document.write(“<b> Lo = <\/b><b>”+ dLo +”<\/b><br>”)
\ndocument.write(“<b> Co = <\/b><b>”+ Co +”<\/b><br>”)
\ndocument.write(“<b> L = <\/b><b>”+ dL +”<\/b><br>”)
\ndocument.write(“<b> C = <\/b><b>”+ C +”<\/b><br>”)
\ndocument.write(“<b> d\/Lo = <\/b><b>”+ Xa1 +”<\/b><br>”)
\ndocument.write(“<b> s\/L = <\/b><b>”+ X2 +”<\/b><br>”)
\ndocument.write(“<b> kd = <\/b><b>”+ X3 +”<\/b><br>”)
\ndocument.write(“<b> tanh(kd) = <\/b><b>”+ X4 +”<\/b><br>”)
\ndocument.write(“<b> sinh(kd) = <\/b><b>”+ X5 +”<\/b><br>”)
\ndocument.write(“<b> cosh(kd) = <\/b><b>”+ X6 +”<\/b><br>”)
\ndocument.write(“<b> H\/Ho = <\/b><b>”+ X7 +”<\/b><br>”)
\ndocument.write(“<b> K = <\/b><b>”+ X8 +”<\/b><br>”)
\ndocument.write(“<b> 2kd = <\/b><b>”+ X9 +”<\/b><br>”)
\ndocument.write(“<b> sinh(2kd) = <\/b><b>”+ X10 +”<\/b><br>”)
\ndocument.write(“<b> cosh(2kd) = <\/b><b>”+ X11 +”<\/b><br>”)
\ndocument.write(“<b> n = <\/b><b>”+ X12 +”<\/b><br>”)
\ndocument.write(“<b> Cg\/Co = <\/b><b>”+ X13 +”<\/b><br>”)<\/p>\n

var dtb = new Date( );
\nd_milb = dtb.getMilliseconds()
\nd_secb = dtb.getSeconds()
\nd_minb = dtb.getMinutes()
\nd_jamb = dtb.getHours()
\nd_tglb = dtb.getDate()
\nd_blnb = dtb.getMonth()
\nd_thnb = dtb.getFullYear()
\ndocument.write(“finish : “+d_thnb+”-“+d_blnb+”-“+d_tglb+”-“+d_jamb+”-“+d_minb+”-“+d_secb+”-“+d_milb+”<br>”);
\nwaktu_b = d_jamb*3600 + d_minb*60 + d_secb + (d_milb\/1000)
\nlama = waktu_b – waktu_a
\ndocument.write(“lama waktu running = ” + lama + ” detik<br>”)
\n}
\n<\/script>
\n<\/body><\/html><\/p>\n

————————————-gelombang_javascipt.html—————————————-<\/p>\n

Bila program di atas dijalankan menggunakan browser maka akan ditampilkan gambar sbb,<\/p>\n

\"\"<\/a><\/p>\n

Dengan memasukkan nilai T, d, dan g lalu klik hitung, maka akan didapatkan hasil perhitungan berupa panjang gelombang sbb,<\/p>\n

\"\"<\/a><\/p>\n

\"\"<\/a><\/p>\n

Program ini bisa didapatkan dengan cara mendownload dari (download<\/a>).<\/p>\n","protected":false},"excerpt":{"rendered":"

Didalam teori Gelombang Amplitudo Kecil, panjang gelombang dapat dihitung dengan menggunakan Persamaan Panjang Gelombang. Dengan menggunakan Java Scipts, panjang gelombang dapat dihitung dengan menggunakan program java script berikut ini, ————————————-gelombang_javascipt.html—————————————- … Continue Reading →<\/a><\/p>\n","protected":false},"author":21,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[35],"tags":[],"class_list":["post-1153","post","type-post","status-publish","format-standard","hentry","category-java-srcipts"],"_links":{"self":[{"href":"https:\/\/dosen.unila.ac.id\/ahmadzakaria\/wp-json\/wp\/v2\/posts\/1153"}],"collection":[{"href":"https:\/\/dosen.unila.ac.id\/ahmadzakaria\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dosen.unila.ac.id\/ahmadzakaria\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dosen.unila.ac.id\/ahmadzakaria\/wp-json\/wp\/v2\/users\/21"}],"replies":[{"embeddable":true,"href":"https:\/\/dosen.unila.ac.id\/ahmadzakaria\/wp-json\/wp\/v2\/comments?post=1153"}],"version-history":[{"count":13,"href":"https:\/\/dosen.unila.ac.id\/ahmadzakaria\/wp-json\/wp\/v2\/posts\/1153\/revisions"}],"predecessor-version":[{"id":1169,"href":"https:\/\/dosen.unila.ac.id\/ahmadzakaria\/wp-json\/wp\/v2\/posts\/1153\/revisions\/1169"}],"wp:attachment":[{"href":"https:\/\/dosen.unila.ac.id\/ahmadzakaria\/wp-json\/wp\/v2\/media?parent=1153"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dosen.unila.ac.id\/ahmadzakaria\/wp-json\/wp\/v2\/categories?post=1153"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dosen.unila.ac.id\/ahmadzakaria\/wp-json\/wp\/v2\/tags?post=1153"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}