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<td colspan="2"><img height="140" alt="If you are having trouble viewing this message go to: http://www.arborsci.com/CoolStuff/New_CoolStuff_Articles/C_33_1.htm" width="625" border="0" src="http://www.arborsci.com/Invite_TopBanner33.jpg" /></td>
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<p style="MARGIN: 10px" align="left"><strong><em><font face="Arial" color="#ffffff" size="2">In this Issue</font></em></strong></p>
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<p style="MARGIN: 10px"><em><strong><font face="Arial">Make a motor out of the stuff in your desk!</font></strong></em></p>
<p style="MARGIN: 10px"><font face="Arial" size="2">You've seen the World's Simplest Motor (TM). Now you can make one that's even simpler than that, with materials you probably already have on hand! </font></p>
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<td bordercolorlight="#ffffff" align="center" bordercolordark="#ffffff" colspan="2"><img height="100" alt="World's Simplest Motor" width="100" border="0" src="http://www.arborsci.com/images/P8-8300Sm.jpg" /> <font face="Arial" size="1">World's Simplest Motor™    vs.  The Junk Drawer Motor</font>  <img height="100" alt="Homopolar Motor" width="100" border="0" src="http://www.arborsci.com/images/BatMotor.gif" /></td>
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<p style="MARGIN: 10px"><font face="Arial" size="2">Watch the video and see how it works. </font><font face="Arial" size="3"><em><strong><a href="http://cts.dundee.net/t/29341217/112638951/76315/0/?u=aHR0cDovL3d3dy5hcmJvcnNjaS5jb20vQ29vbFN0dWZmL05ld19Db29sU3R1ZmZfQXJ0aWNsZXMvQ18zM18xLmh0bQ%3d%3d&x=51d23afb">See it Now</a></strong></em></font></p>
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<p style="MARGIN: 10px"><em><strong><font face="Arial" color="#ffffff" size="2">How it Works!</font></strong></em></p>
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<p class="MsoNormal" style="MARGIN: 10px"><font face="Arial" size="2">This simple Homopolar Motor shows how moving charges (an electric current) experience a force when they move through a magnetic field.  When the wire is in place, current flows from the battery’s positive terminal, through the wire, radially through the magnet, and into the battery’s negative terminal. </font></p>
<p class="MsoNormal" style="MARGIN: 10px"><font face="Arial" size="2">The direction of the force is perpendicular to both the direction of the current and the direction of the magnetic field, as demonstrated by the Left Hand Rule.</font></p>
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<p style="MARGIN: 10px"><font face="Arial" size="2">The magnetic field is vertical, relative to the table.</font> </p>
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<p style="MARGIN: 10px"><font face="Arial" size="2">The current is radially inward at the lower point of contact, toward the center of the battery.</font> </p>
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<p style="MARGIN: 10px"><font face="Arial" size="2">The resulting force on the current-carrying wire is tangential.  The tangential force, or <em>torque</em>, causes the wire to rotate.</font> </p>
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<p class="MsoNormal" style="MARGIN: 10px"><font face="Arial" size="2">Note that only one connection to the magnet is necessary for the motion to occur.  Creating two connections doubles the resulting force, creating a faster spin.  Try bending the wire into different shapes, such as a spiral that rests one end on the positive terminal and curls around the battery.</font></p>
<p class="MsoNormal" style="MARGIN: 10px"><font face="Arial" size="1"><a href="http://cts.dundee.net/t/29341217/112638951/76315/0/?u=aHR0cDovL3d3dy5hcmJvcnNjaS5jb20vQ29vbFN0dWZmL05ld19Db29sU3R1ZmZfQXJ0aWNsZXMvQ18zM18xLmh0bQ%3d%3d&x=51d23afb">Read More</a></font></p>
<p style="MARGIN: 10px"> </p>
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<td bordercolorlight="#ffffff" align="center" bgcolor="#ffffff" bordercolordark="#ffffff"><img height="74" alt="Download Cool Video Clips!" width="74" vspace="10" border="0" src="http://www.arborsci.com/CoolStuff/download-icon.jpg" /></td>
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<p style="MARGIN: 10px"><em><strong><font face="Arial" size="2">Don't have time to read the article, then watch the Video Clip! </font></strong></em><font face="Arial" size="2">Click here to go directly to the video explanation of how the Homopolar Motor works and get the facts in 60 seconds! </font><font style="FONT-SIZE: 8pt" face="Arial"><a href="http://cts.dundee.net/t/29341217/112638951/76315/0/?u=aHR0cDovL3d3dy5hcmJvcnNjaS5jb20vQ29vbFN0dWZmL05ld19Db29sU3R1ZmZfQXJ0aWNsZXMvQ18zM18xLmh0bQ%3d%3d&x=51d23afb">See it Now</a></font><font face="Arial" size="2"> </font></p>
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<p align="center"><img height="83" alt="Free Lab Activity in this issue!" width="55" vspace="10" border="0" src="http://www.arborsci.com/CoolStuff/book_icon.jpg" /></p>
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<p style="MARGIN: 10px"><em><strong><font face="Arial" size="2">Summer is almost here; how about a little splash in class? </font></strong></em><font face="Arial" size="2">Whatever the age, Bottle Rockets are a great lab activity for student's to explore motion, acceleration and even trigonometry. Single and Double Bottle Rocket launchers, or the Hydrogen Fuel Rocket, we have everything you need to set student's imaginations soaring into summer!  </font><font style="FONT-SIZE: 8pt" face="Arial"><a href="http://cts.dundee.net/t/29341217/112638951/76316/0/?u=aHR0cDovL3d3dy5hcmJvcnNjaS5jb20vU2VhcmNoUmVzdWx0LmFzcHg%2fQ2F0ZWdvcnlJRD0xMjI%3d&x=c2859ce4">Read more</a></font></p>
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<p align="center"><img height="56" alt="Free Resoures from Arbor Scientific" width="55" vspace="10" border="0" src="http://www.arborsci.com/CoolStuff/Global_icon.jpg" /></p>
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<p style="MARGIN: 10px"><font face="Arial" size="2"><strong><em>Free Online Lab Activities  </em></strong>Introducing the free online lab manual, a downloadable collection of reproducible, ready-to-use labs for physics and physical science. Labs in this growing collection are designed to cover important key concepts, and may be downloaded and used in your classroom.  </font><font style="FONT-SIZE: 8pt" face="Arial"><a href="http://cts.dundee.net/t/29341217/112638951/76317/0/?u=aHR0cDovL3d3dy5hcmJvcnNjaS5jb20vb29sU3R1ZmYvQXJib3JMYWJzL0FTTGFic19Ib21lLmFzcHg%3d&x=685ef718">Read more</a></font><font face="Arial" size="2"> </font></p>
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<p style="MARGIN: 10px"><em><strong><font face="Arial" size="2"><a href="http://cts.dundee.net/t/29341217/112638951/51908/0/?u=aHR0cDovL3d3dy5hcmJvcnNjaS5jb20vU2VhcmNoLmFzcHg%3d&x=acf93e7e">Search Arborsci.com</a></font></strong></em></p>
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<p style="MARGIN: 10px"><font face="Arial" size="1">Arbor Scientific<br />
PO Box 2750<br />
Ann Arbor, MI 48106<br />
(800) 367-6695</font></p>
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