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May 18, 2011

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nlllU, ItmmmJtw m,mmlm+mm+Ullltlm itL+ ] , IUI1111 i lllltU+!ll+[lllllll+llllllJJli SENTINEL TRIBUNE EDUCATIO]'00 Wednesday, May 18, 2011 Page 8 COLLE+E NEWS WWO Junior a.d Senior High Band Concert ROTC cadets receive commissions to go beyond South Dakota State campus Graduation at South Dakota State University had double meaning for Air Force and Army ROTC cadets. The cadets received their bachelor's diplomas during the May 7 commencement and stood during the ceremony for recognition among fellow graduates. The day before, how- ever, Army cadets had their own ceremony to receive com- missions as second lieutenants. The commission ceremony for Air Force cadets followed the conclusion of the univer- sity's commencement. SDSU honored the tradition this year with 22 Air Force and Army cadets earning their second lieutenant bars to become members of the nation's military. Air Force ROTC 2011 commissionees included: Brian Stresemann, Westbrook MN, bachelor's in civil engineering, to Peterson Air Force Base-Colorado, for devel- opmental engineering. Stresemann is the son of David and Donna Stresemann. MN State University, Mankato commencement Minnesota State University, Mankato graduated 2,191 stu- dents during spring/summer commencement exercises Saturday, May 7, at the Taylor Center on campus. Area students graduating were: Revere - Jerilyn L. Knutson, BA, Art Walnut Grove, MN - Brennan L. Enstad, BS, Finance, Cum Laude; Philippe A. Goetstouwers, SPEC, Educational Leadership; Jordan T. Heinrich, BS&BS, Philosophy and Philosophy, Politics & Economics, Summa Cum Laude. Weekly Science byQDouUgl!sZclark Fusion's Future This week we will wrap up our series on nuclear fusion by taking a look at one pos- sible scenario for the future of fusion and how it could eventually play a part in end- ing our reliance on oil and natural gas. Even though nuclear fusion does not produce radioactive waste directly, it does produce neutron radia- tion which does require shielding. But some fusion reactions are aneutronic. One +,+such reaction is a pure reac- );/'9n of helium-3 where two He3 nuclei fuse to create one helium-4 nucleus and two protons. Since the protons are electrically charged, they can be contained by an elec- tric or magnetic field. And it gets even better, because by containing these protons it would be possible to convert this energy directly into elec- tricity, bypassing the need to heat water and create steam which runs through turbines which then powers electric generators. But there are some prob- lems, the biggest of which is that helium-3 is virtually nonexistent here on Earth. Our closest source for heli- um-3 is on the Moon, which has sparked a new space race which may one day lead to mining on the Moon. China, Russia, India, Japan and Germany have all declared their intention to make it to the Moon with the intent of eventually mining helium-3 and bringing it back to use as fuel for fusion reactors here on Earth. NASA, too, is scheduled to be on the Moon by 2020 and to have a perma- nent base by 2024. And while NASA has not specifically came out and declared an intention to mine helium-3, it does have advocates of heli- um-3 mining in influential positions. The other problem is the extreme temperature required in order to begin a fusion reaction of pure helium-3, 'which is estimated to be six time hotter than the interior of the Sun. The only research facility currently doing suc- cessful helium-3 fusion reac- tions is at the Fusion Technology Institute at the University of Wisconsin- Madison, where they have been able to confine the reac- tion with a technology known as inertial electrostatic con- finement (IEC). The benefit of IEC is that it doesn't need a massive confinement struc- ture-their experiment is table-top sized. It is estimat- ed that we are 50 years away from creating clean fusion energy, but the potential advantages are so great there is no doubt that research will continue and possibly one day in the not-to-distant future clean energy will be more than just a dream. 1) True or false: Helium-3 is abundant here on Earth. 2) Helium-3 has __ neu- trons in it nucleus. a) l b)2 +c)3 d)4 3) True or false: In order to create a fusion reaction of pure helium-3, temperatures in excess of those at the inte- rior of the Sun are needed. 4) The technology current- ly being used to contain heli- um-3 fusion reactions is called (IEC). a) initial early consign- ment b) inertial electrostatic confinement c) inertial ele- mentary confoundment d) internal electrostatic confine- ment 5) The closest place to mine helium-3 is at (Answers on Page 2) Copyright (C) 2011 Weekly Science Quiz All rights reserved. Above left: The junior high percussion play- ing at the band con- cert last week. Above: The junior high saxophone section performing one of the Concert band num- bers. Left: Mrs. Brenda Derickson directing the senior high con- cert band. Above: Senior high trum- pets playing in the jazz band. Above right: A flute ensemble by Stephanie Gundermann, Hailey Osland, and Chanel Madson. Above: The trumpet section playing in the senior high concert band. Left: The trombone section playing in the senior high concert band. Seniors -- From page 1 0 Superintendent Lay Woelber will introduce the com- mencement speaker, Debra Kuehl. After the commencement address, Mr. Richards will introduce the graduating class. School board chairperson, Eugene Kronback will present diploma's to the graduating class. The class will then file out of the gymnasium and form a reception line outside the school, weather permitting. The class flower is the Orchid and the class colors are dark red, gold and black. Class Motto: We met as strangers, grew as classmates, and leave as friends. 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