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Radioactive Calculator
Use JavaScript to find how much radioactive material remains after a given time.
Halflife
Amount
Time
The amount remaining is:
or
percent of the original sample.
Insert into <HEAD>
<SCRIPT LANGUAGE="JavaScript"> <!-- Begin function computeamount(h,a,t){ h = document.forms[0].h.value a = document.forms[0].a.value t = document.forms[0].t.value document.forms[0].result1.value=eval(a*Math.exp((Math.log(0.5)/h)*t)); document.forms[0].result2.value=eval((document.forms[0].result1.value/a)*100); } // End --> </SCRIPT>
Insert into <BODY>
<CENTER> <TABLE border=1> <TR> <TD>Halflife</TD> <TD>Amount</TD> <TD>Time</TD> </TR> <TR> <TD><FORM><input name="h" size=10 ></TD> <TD><input name="a" size=10 ></TD> <TD><input name="t" size=10 ></TD> <TD><input type="button" value="Calculate Amount Left" onclick="computeamount()"></TD> </TR> </TABLE> </CENTER> <BR>The amount remaining is: <input name="result1" size=22> or <input name="result2" size=5> percent of the original sample. <input type="reset" value="Reset Form"> </FORM>
Other Options
