Tech Directions - April 2008 - (Page 31)

SATCO Supply 441 Old Hwy. 8 NW, Ste. 202 St Paul, MN 55112 800-328-4644, Fax 651-604-6606 www.tools4schools.com sales@satcosupply.net See ad on page 6. school wood shops. We manufacture cyclone, Vibraclean shaker and pulse jet styles. With over 1,200 school installations, we have the experience to provide a reliable and cost effective solution. In addition, we offer ventilation for welding smoke and auto-body dust. We will work directly with you, your architec,t or engineer. Saw Stop 9564 S.W. Tualatin Rd. Tualatin, OR 97062 866-729-7867, Fax 503-570-3303 www.SawStop.com info@SawStop.com Sternvent Co. Inc. 253 W. Fort Lee Rd., Bogota, NJ 07603 800-383-DUST, Fax 201-488-1605 www.sternvent.com; info@sternvent.com Sternvent specializes in dust collectors for VMS Inc. 805 Airway Dr., Allegan, MI 49010 800-343-6430, Fax 269-673-9509 www.vms-online.com sales@vms-online.com More than Fun Answers Technology Inventors 1. 2. 3. 4. 5. B G H I E 6. 7. 8. 9. 10. C F A J D monthly marketplace Word Scramble GROJAN SEVAW JARGON WAVES SHWICT INSEP SWITCH SPINE When unscrambled, the letters in the squares should read: JOSEPH SWAN Though earlier inventors had tried, with limited success, Sir Joseph Wilson Swan, of Britain, invented the first practical incandescent light bulb in 1860. The efficiency of his first light bulbs was severely compromised by their carbonized paper filaments, which significantly limited bulb life to a few hours. Later, he would improve the filament, first by using carbon fiber (in 1873), then by using slim carbon rods (in 1877). Though these later bulb designs consumed considerable amperage, they lasted long enough for practical commercial use. So, in 1881, Swan founded his own company to manufacture and market his light bulbs. Meanwhile, across the Atlantic, Thomas Edison had purchased a rival—although far inferior—light bulb patent for $5,000. Edison and his team at Menlo Park spent much time experimenting with better filaments, until eventually they found a filament material superior to Swan’s. Edison founded his own light bulb manufacturing company, which later merged with Swan’s company—and eventually bought Swan out. LUCIFER FURNACES Space Saver Furnaces • Ideal for schools, R&D Harden, Draw, • Quench to 2300° F, • UC to 1200° F LC • Complete Heat Treat Installation LUCIFER FURNACES, INC. (800) 378-0095 www.luciferfurnaces.com info@luciferfurnaces.com www.techdirections.com BUYERS’ GUIDE 31 http://www.sternvent.com http://www.tools4schools.com http://www.SawStop.com http://www.vms-online.com http://www.sternvent.com http://www.gssteched.com http://www.allelectronics.com http://www.badgergraphic.com http://www.kelvin.com http://www.luciferfurnaces.com http://www.8020.net http://www.acsupplyco.com http://www.techdirections.com

Table of Contents Feed for the Digital Edition of Tech Directions - April 2008

Tech Directions - April 2008 Technically Speaking Contents Direct from Washington The News Report Technology's Past Technology Today Mastering Computers A Bridge to the Future Aeronautics Study Takes Off! Glider Design for Beginners Project Engineer in the Heavy Construction Industry for Renewable Energy Annual Buyers' Guide More than Fun

Tech Directions - April 2008

For optimal viewing of this digital publication, please enable JavaScript and then refresh the page. If you would like to try to load the digital publication without using Flash Player detection, please click here.