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energia_de_superficie.html
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energia_de_superficie.html
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<html>
<head>
<title>Surface tension</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<script>
function calc() {
var gld = ["50.80", "27.20", "28.90", "28.50"];
var opt = document.getElementById("liquidos").selectedIndex;
var angulo = document.getElementById("angcont").value;
var aliqui = document.getElementById("angliqu").value;
var tdisp = 0;
var enerSupDisp = 0;
var enerSupPolar = 0;
var enerSuperficie= 0;
switch (opt) {
case 0: {
tdisp = 50.80;
break;
}
case 1: {
tdisp = 27.20;
break;
}
case 2: {
tdisp = 28.90;
break;
}
case 3: {
tdisp = 28.50;
break;
}
default: {
alert("Choose a liquid!");
}
}
<!-- Calula Energia de Superfície (componente) Dispersiva -->
enerSupDisp = (tdisp * (Math.pow((Math.cos(aliqui*0.0174533)+1),2))) / 4;
document.getElementById("compdist").value = Math.round(enerSupDisp * 100) / 100;
<!-- Calcula Energia de Superfície (componente) Polar -->
enerSupPolar = Math.pow(((((72.80*(Math.cos(angulo*0.0174533)+1))/2) - (Math.pow(21.8, 0.5)*Math.pow(enerSupDisp, 0.5))) / Math.pow(51.00, 0.5)), 2);
enerSuperficie = enerSupDisp + enerSupPolar;
document.getElementById("compolar").value = Math.round(enerSupPolar * 100) / 100;
document.getElementById("energia").value = Math.round(enerSuperficie * 100) / 100;
}
function limpa() {
document.getElementById("liquidos").selectedIndex = 1;
document.getElementById("angcont").value = "0.00";
document.getElementById("angliqu").value = "0.00";
document.getElementById("compdist").value = "0.00";
document.getElementById("compolar").value = "0.00";
document.getElementById("energia").value = "0.00";
}
function testaNumero(dado){
if (isNaN(dado)) {
alert("Invalid entry. Type a numeric value.");
} else {
if (dado < 0) {
alert("Please type a positive value for angle.");
<!-- document.getElementById("angcont").value = "0.00"; -->
}
}
}
</script>
</head>
<body>
<h1><b>Surface tension</b></h1>
<h3>Liquids options:
<select id="liquidos">
<option value="op1">diiodomethane</option>
<option value="op2">chloroform</option>
<option value="op3">benzene</option>
<option value="op4">toluene</option>
</select>
</h3>
<table>
<tr>
<th align="right"> Contact angle for water: </th>
<th> <input id="angcont" type="text" value="0.00" maxlength="7" size="7" onchange="testaNumero(this.value)"> </th>
<th align="left">degrees</th>
</tr>
<tr>
<th align="right"> Contact angle for the second liquid:</th>
<th> <input id="angliqu" type="text" value="0.00" maxlength="7" size="7" onenter=" " onchange="testaNumero(this.value)"> </th>
<th align="left">degrees</th>
</tr>
<tr>
<th align="right">Dispersive component: </th>
<th> <input id="compdist" type="text" value="0.00" maxlength="7" size="7" readonly> </th>
<th align="left">mJ/m<sup>2</sup></th>
</tr>
<tr>
<th align="right">Polar component : </th>
<th> <input id="compolar" type="text" value="0.00" maxlength="7" size="7" readonly> </th>
<th align="left">mJ/m<sup>2</sup></th>
</tr>
<tr>
<th align="right">Surface tension : </th>
<th> <input id="energia" type="text" value="0.00" maxlength="7" size="7" readonly></th>
<th align="left">mJ/m<sup>2</sup></th>
</tr>
</table>
<br>
<input id="calcular" type="submit" value="Calc" onclick="calc()">
<input id="Limpar" type="submit" value="Clear" onclick="limpa()">
</body>
</html>