Current Source What is the source of the electrons in an electric current flowing through a circuit?
What is the source of the electrons in an electric current flowing through a circuit?
Electrons are in wires.But to flow electron it need e.m.f.Battery give a force to electrons to move in circuit.Electrons move very slowly in a circuit.But there are millions and millions of electrons and all start to move at same time and circuit conducts electricity
Current Tides Giclee Print by Steven Valiere. Product size approximately 12 x 14 inches. Available at Art.com. Embrace your Space - your source for high quality fine art posters and prints.
Surfing the Current Art Print by . Product size approximately 14 x 11 inches. Available at Art.com. Embrace your Space - your source for high quality fine art posters and prints.
Rainbow in the Current Giclee Print by Linda Braucht. Product size approximately 9 x 12 inches. Available at Art.com. Embrace your Space - your source for high quality fine art posters and prints.
An eddy current (also known as Foucault current) is an electrical phenomenon discovered by French physicist Franois Arago in 1824. It is caused when a conductor is exposed to a changing magnetic field due to relative motion of the field source and conductor; or due to variations of the field with time. This can cause a circulating flow of electrons, or a current, within the body of the conductor. These circulating eddies of current create induced magnetic fields that oppose the change of the original magnetic field due to Lenzs law, causing repulsive or drag forces between the conductor and the magnet. The stronger the applied magnetic field, or the greater the electrical conductivity of the conductor, or the faster the field that the conductor is exposed to changes, then the greater the currents that are developed and the greater the opposing field.The term eddy current comes from analogous currents seen in water when dragging an oar breadthwise: localised areas of turbulence known as eddies give rise to persistent vortices.Eddy currents, like all electric currents, generate heat as well as electromagnetic forces. Author: Miller, Frederic P./ Vandome, Agnes F./ McBrewster, John Binding Type: Paperback Number of Pages: 228 Publication Date: 2009/11/30 Language: English Dimensions: 5.98 x 9.01 x 0.51 inches
9 watt high power waterproof LED driver Input voltage: 85~265V Output voltage: DC 21~32V Output current: 330mA Dimensions: 1.50 in x 1.18 in x 0.91 in (3.8 cm x 3.0 cm x 2.3 cm) Weight: 1.55 oz (44 g)
Moment of Stillness in Wild Current Wall Decal by . Product size approximately 24 x 32 inches. Available at Art.com. Embrace your Space - your source for high quality fine art posters and prints.
Drifting Current II Mounted Print by Heather Mcalpine. Product size approximately 18.0712 x 18.0712 inches. Available at Art.com. Embrace your Space - your source for high quality fine art posters and prints.
Drifting Current I Mounted Print by Heather Mcalpine. Product size approximately 18.0712 x 18.0712 inches. Available at Art.com. Embrace your Space - your source for high quality fine art posters and prints.
Manta rays gliding in the current Photographic Print by Jennifer Hayes. Product size approximately 12 x 16 inches. Available at Art.com. Embrace your Space - your source for high quality fine art posters and prints.
Satire on the Current "Peacock" Modes Giclee Print by Gerda Wegener. Product size approximately 9 x 12 inches. Available at Art.com. Embrace your Space - your source for high quality fine art posters and prints.
4 Light 240 Watt Adjustable Pendant from the Current CollectionAdjustable Pendant: Current with shade options.This award-winning collection of transitional and contemporary pendants is one of the most distinctive in the industry. They draw their design inspiration from modern sculptural forms, yet possess a warm, organic quality of light that is comfortable in a wide range of settings. And they are highly configurable. Mix and match your choice of glass, finish and shade options to create a customized design to suit your personal decorating style.Requires (3) 60 Watt A-19 Medium Base Bulbs (Not Included)Sloped ceiling adaptable to 45 degrees. Double down-rod fixture can be used in one direction only. The two down-rods must remain the same length. The fixture will run parallel or along the slope, but not perpendicular or up the slopeIncludes adjustable stem and rectangular canopy kitDimensions: 7.9" h. x 42" l. x 8" w.UL Listed Suitable for Damp LocationsWrought Iron ConstructionMade in USAImage shown in Dark Smoke finish with Natural Anna shade
4 Light 240 Watt Adjustable Pendant from the Current CollectionAdjustable Pendant: Current with shade options.This award-winning collection of transitional and contemporary pendants is one of the most distinctive in the industry. They draw their design inspiration from modern sculptural forms, yet possess a warm, organic quality of light that is comfortable in a wide range of settings. And they are highly configurable. Mix and match your choice of glass, finish and shade options to create a customized design to suit your personal decorating style.Requires (3) 60 Watt A-19 Medium Base Bulbs (Not Included)Sloped ceiling adaptable to 45 degrees. Double down-rod fixture can be used in one direction only. The two down-rods must remain the same length. The fixture will run parallel or along the slope, but not perpendicular or up the slopeIncludes adjustable stem and rectangular canopy kitDimensions: 7.9" h. x 42" l. x 8" w.UL Listed Suitable for Damp LocationsWrought Iron ConstructionMade in USAImage shown in Dark Smoke finish with Natural Anna shade
Koolatron specializes in portable 12-volt devices, such as coolers, freezers, or microwaves, that plug into a car's cigarette lighter or other 12-volt source. With the Koolatron 110-volt adapter, you can use these same devices wherever you have access to a 110-volt outlet...
Add an S&P centrifugal fan to your bathroom, for efficient ventilation. These fans are the perfect solution for any installation that requires long or complicated duct runs. The fans will dramatically decrease the amount of moisture in your bathroom, which in turn, helps prevent mold or mildew...
Rising Current features contemporary guitar instrumentals with a flavor of jazz and world percussion. The CD features Far North, using innovative guitar tapping technique.
Light emitting diodes (LEDs) are low-voltage light sources that require a constant DC voltage or current to operate optimally. Because they operate on a low-voltage DC power supply, they easily adapt to different power supplies, have longer standby power, and are safer...
Solar Power Chargers for your 12V batteries and accessories. Power-up anywhere, affordably! These Solar Power devices grab free "juice" from the sun! They extend the life of your 12V batteries, maintain the charge and allow you to run various electronics (deer feeders, landscaping pumps, etc...
The SEC-HR4U8BPN 4-AAA Eneloop battery pack utilizes SANYO's advanced rechargeable battery technology allowing them to last longer than ever before! Unlike disposable batteries which can only be used only once and are wasteful to the environment, the eneloop batteries can be recharged up to 1,500 times...
Applications: Electronic, Watch, Clock, Electronic Calculator, Memory Back-up, Power Source for SRAM or Real Time Clock (RTC). Total 10 pcs of Sony CR2032 Batteries. Made in Japan by Sony Corp. Used by 2021.
Twinings is an English specialty tea company founded in 1706 and is the favorite choice of tea lovers everywhere. Blackcurrant Breeze is a fine black tea perfectly balanced with the sweet and tangy flavor of juicy blackcurrants.
Since 1706, Twinings of London has been masterfully blending teas to create a special moment with each cup of Blackcurrant Breeze tea you brew. Twinings has expertly blended to perfection the finest black tea with the juicy flavor of blackcurrants to deliver a distinctive tea with a strong, fruity aroma and sweet & tangy taste...
With the Elenco Electronics Snap Circuits Green Alternative Energy Kit, kids can get a hands-on, entertaining education about what green energy means. This innovative kit contains real circuit components that snap together to create working electronic circuits and devices, featuring projects designed specifically to illustrate different sources of electricity...
The Motorola Micro USB high-performance car charger is a requirement for anyone who is on the road. Through your vehicle power adapter you can talk and charge at the same time so your cell phone will stay charged while you are on the go...
Technical Specification: Input Voltage (DC): From 12 Vdc Nominal / From 10-24Vdc Maximum ; Input Current: 1.0A max at 12Vdc ; 75% minimum at dc output full loading and nominal DC input voltage range. Output Voltage: Vout: 5...
Lecture - 36 Current Source and Current Sink
Why is current source open circuited while voltage source open circuited ?
While applying superposition theorem why is current source open circuited and voltage source short circuited (when replacement by their internal impedances) to make it imoperable?????
Because a voltage source (ideal) is a voltage in series with zero ohms. Set the voltage to zero, and you are left with zero ohms, a short circuit.
A current source is a current in parallel with infinite ohms, so if you set the current to zero, you are left with infinite ohms, an open circuit.
Along with the screw driver handle itself, these drivers also tend to go AWOL, especially if your purchased a used Honda, where the previous owner thought these items would be better left in there garage rather than the tool bag! This is the coarse size, you may also wish to replace the fine size, flat head and handle as wel..
Mini philips head screw driver. Satisfaction Ensured. Manufactured to the highest quality available. We are committed to Innovative Products that will enhance your well being.
Improve your golf game with a Nextt Smoke golf driverSingle golf club features a custom head coverGolf equipment has a 10.5-degree loftSmoke driver made by meshing high technology with a thought toward a non-classic, Tour-inspired shaped head and deep face depthEven off-center or miss hits will send the ball directly down the fairwaySmoke driver is weighted to have a draw bias while maintaining its own unique square look at address and producing remarkable distance and forgivenessSmoke never looked so good
Stand out from the crowd. Perfect for noisy environments, this lightweight, over-the-head Bluetooth headset has Max4X noise canceling technology that lets the person on the other end of the line hear just your voice--without any distracting background noise. From Car And Driver. Use of Bluetooth Wireless Technology requires Bluetooth software and Bluetooth-compatible accessories. Additional accessories may be required.
Key Features of the Dakine Stance Driver: 6 piece ratchet driver #2 and #3 phillips #2 and #3 posidrive 3/32" hex 1/4" flat head 39" [ 100cm ] tape measure
Key Features of the Dakine Torque Driver: 6 piece ratchet driver #2 and #3 phillips #3 posidrive 3/32" hex 1/4" flat head 8mm and 10mm wrench
Key Features of the Dakine Torque Driver: 6 piece ratchet driver #2 and #3 phillips #3 posidrive 3/32" hex 1/4" flat head 8mm and 10mm wrench
Get Callaway I-Mix technology at your fingertips with this men's Callaway I-Mix FT 9 Driver Head. Experience the I-Mix advantage and take command of your game like never before. Large striking faceAvailable in varying degrees of loftAvailable lofts: 8.5, 9.0, 9.5, 10.0, 10.5Kit includes: I-Mix club headI-Mix torque wrenchI-Mix head coverPlease note that this is for the Driver Head only
Builds strength and flexibility in the golf-specific muscles.Designed to be swung at home to build the correct golf swing fundamentals to drive the ball longer and straighter.30" long, 50 oz. model.
Street Tools 3/8" Drive Impact Driver Removable 3/8" head Can be used with standard or deep 3/8" drive sockets or extensions 2 flat and 2 phillips bits included
Use the 95-112 Tripod to illuminate dark corners and hard-to-reach places. Keep an extra 95-112 Tripod in the car in case of emergencies. About Stanley's Illumination Tools Stanley makes a wide assortment of lights for use in your workshop, garage, or job site--with tripods, angled heads, and brilliant bulbs to illuminate even the darkest corners...
The FL-18 boasts features and performance previously not available on a three-color flasher depth finder / fish finder. The FL-18 offers a patented split screen flasher display. This allows you to zoom-in on the bottom six feet while watching the entire water column at the same time in real time! You will be amazed at the performance for bass fishing, walleye fishing, and pan fish on both open water and ice fishing...
Unwired Tech. Single Channel Infrared Fold-Flat Headphones. 4 internal receiving diodes for 360 IR signal capture. Electronic auto shut-off after 3 1/2 minutes without receiving audio signal. 27mm neodymium drivers with thick foam ear cushions
671nm DPSS laser head .
All-new 2007 Jeep Patriot Committed to Safety and Security
The all-new 2007 Jeep patriot is redesigned with enhanced safety features. And according to Matt Liddane, Chief Engineer – Jeep Patriot, “Our engineers have included the latest off-road technology to ensure Jeep Patriot is as solid off-road as it is on-road. Our Jeep Patriot customers can have the confidence of driving a safe and secure vehicle in whatever driving conditions they may encounter.”
The 2007 Jeep Patriot is equipped with a very long list of safety and security features and here they are:
* Advanced Multi-stage Air Bags (standard)
* All-speed Traction Control (standard)
* Anti-lock Brake System with Brake Traction Control (standard)
* Auto-reverse Sun Roof (available)
* BeltAlert (standard)
* Brake Assist (standard)
* Brake/Park Interlock (standard with automatic transaxle)
* Child-protection Rear Door Locks (standard)
* Child Seat Anchor System [Lower Anchors and Tethers for Children (LATCH)] (standard)
* Constant Force Retractors (CFR) (standard)
* Cross Car Impact Beam: Manages energy in a side-impact collision (standard)
* Crumple Zones (standard)
* Dual-phase Steel Rails and Tunnel Reinforcements (standard)
* Electronic Roll Mitigation (ERM) (standard)
* Electronic Stability Program (standard)
* Energy-absorbing Steering Column (standard)
* Enhanced Accident Response System (EARS) (standard)
* Head Restraints (standard)
* Height-adjustable Seat Belts (standard)
* HomeLink Universal Home Security System Transceiver (available)
* Interior Head-impact Protection (standard)
* Knee Bolsters (standard)
* Remote Keyless Entry with Illuminated Entry (available)
* Removable/Rechargeable Light-emitting Diode (LED) (available)
* Structural Safety Cage (standard)
* Seat-belt Pretensioners (standard)
* Sentry Key(R) Engine Immobilizer (standard)
* Side Guard Door Beams in Front and Rear Doors (standard)
* Side Occupant Protection (standard)
* Supplemental Seat-mounted Side Air (available - late availability)
* Supplemental Side-curtain Air Bags (standard)
* Three-point lap Shoulder Seat Belts (standard)
* Tire Pressure Monitoring System (TPM) (available)
* UConnect(TM) Hands-free Communication (available)
Aside from the safety features listed the all-new 2007 Jeep Patriot is also equipped with standard features that includes side-curtain air bags, optional front seat mounted supplemental side air bags, standard driver and passenger front air bags, Electronic Stability Program (ESP), Brake Traction Control, Brake Assist, Electronic Roll Mitigation, Anti-lock Brake System (ABS) complete with rough road detection and Tire Pressure Monitoring System.
And just when you are about to think that is all there is, the 2007 Jeep Patriot surprises you with additional safety features such as Freedom Drive II Off-road Package which includes Brake Traction Control, Hill-descent Control and off-road ABS which magnifies the Patriot’s off-road safety and capability. And of course in keeping with the Chrysler’s long commitment to quality the all-new 2007 Jeep Patriot is equipped with the best auto parts there is like for instance Jeep AC condenser which is renowned for quality and durability.
About the Author
Lisa Ziegler is a 29-year old native of Waldport, Oregon and is currently working as a senior research analyst in a top Automotive Research Consultancy firm.
Caution: This product is more amazing in real life than on a two dimensional website As you should well know here at ThinkGeek we are constantly striving to find tools for you, our loyal customers, to aid in your quest for World Domination. But we also want to encourage you to come up with schemes to conquer the entire Universe (and any parallel universes you might stumble across while conquering this one). And to properly conquer the known Universe, you'll need a a nice reliable star map. The Laser Stars Projector is not that map, but it sure does seem like one. And the second most important thing a Universe conqueror might do besides conquering Universes is seeming to conquer Universes. Keeps you buttered up for the real thing. Ok, carrying on then... When you turn off your lights and turn this unit on - trust us - you will be bamboozled with star rapture. That's the only way we can describe it. Everybody who has seen the Laser Stars Projector in action at the ThinkGeek headquarters has at least one 'Oh My Gods, that's Frakking brilliant!' moment. But ThinkGeek, what IS the Laser Stars Projector really? It's a unit about 10inches tall that projects a combination of green laser stars and blue (slightly ultraviolet-ish blue) clouds onto your ceiling, walls, pets, etc. Both the clouds and the stars are constantly moving and morphing, just like a proper Universe should. And there are literally thousands of green laser stars to look at. There are two ways you can adjust your Laser Stars Projector, first you can pivot the projector itself 180 degrees horizontally around the base so that you can control *where* it is projecting in your room. It can literally fill up an entire ceiling and portions of several walls at once. And the other thing you can adjust is the intensity of the blue gaseous clouds, from zero to full intensity. ThinkGeek, I'm a techie. How does it really work? The Laser Stars Projector utilizes a state of the art Diode Pumped, Solid State (DPSS) green laser combined with custom developed multiphase diffractive holographic optics, super luminous diodes and precision motors to produce the laser stars effect. The coherent light produced by the DPSS laser passes through a passive diffractive holographic optical element, which in turn passes through a circular periodicity electromechanical wheel, which is driven by a precision motor to create the soothing motion of the star field. So there. Hurry, get one before your friends do. Then plug it in, turn it on, and tune out... Features: Uses Green Laser and Holographic technology 2 built-in precision glass lenses Creates thousands of stars with or without blue cloud formations Ac Adapter Included (US Only - 120V) Unit Dimensions: 10" tall x 9" wide x 7" deep Please note: It's difficult to portray what the Laser Stars Projector projects here in images because it works best in the dark. The images tend to mute the green stars and exaggerate the blue clouds a bit. But we've tried our b...
The Scorpius Series a portable DPSS laser emitting at 1064nm produces a completely invisible laser beam. Extreme caution must be used when operating any infrared laser as the human eye will not detect it. Laser safety goggles are included with each Scorpius Series laser. The Scorpius Series is available at up to >800mW much greater output power levels than those available in visiblewavelength portable lasers. In addition the price per milliwatt of output power is a fraction of the cost of visible lasers. Ideal for IR laser experimentation including frequencydoubling the 1064nm output using nonlinear crystals such as KTP to produce green laser light at 532nm.
Cuttingedge 447nm laser diode technology is what makes this blue laser pointer both unique and affordable. Keep everyone s attention with the Hydra s deep blue light. This
The Polaris is the world s most powerful visiblewavelength blue portable laser. Cuttingedge 447nm laser diode technology brings power levels previously only possible using benchtop blue lasers that cost tens of thousands of dollars into the palm of your hand at a fraction of the cost. Its ground breaking 447nm wavelength is not only captivating but can also produce fluorescence effects in some materials. Diode technology means energy efficiency allowing this laser to operate three times as long as DPSS blue portable lasers. Available in power levels from >50mW to >1W sustained output with a 100 duty cycle. >500mW and higher models include free laser safety goggles. With its unmatched power and brilliant blue wavelength the Polaris Blue Portable Laser is truly a guide star for the future of lasers.
The Polaris is the world s most powerful visiblewavelength blue portable laser. Cuttingedge 447nm laser diode technology brings power levels previously only possible using benchtop blue lasers that cost tens of thousands of dollars into the palm of your hand at a fraction of the cost. Its ground breaking 447nm wavelength is not only captivating but can also produce fluorescence effects in some materials. Diode technology means energy efficiency allowing this laser to operate three times as long as DPSS blue portable lasers. Available in power levels from >50mW to >1W sustained output with a 100 duty cycle. >500mW and higher models include free laser safety goggles. With its unmatched power and brilliant blue wavelength the Polaris Blue Portable Laser is truly a guide star for the future of lasers.
The development of 447nm blue laser diodes is nothing short of a revolution for portable laser technology. The Hydra Pro brings blue laser light at higher powers into the palm of your hand at much lower prices than previously possible. Its ground breaking 447nm wavelength is not only captivating but can also produce fluorescence effects in some materials. A wide operating temperature range enhanced beam quality and low divergence result in maximum visibility. Diode technology means energy efficiency allowing this laser to operate three times as long as DPSS blue portable lasers. Available in power levels from >50mW to >400mW and fully Class IIIb FDA Compliant the Hydra Pro Blue Portable Laser is a perfect fit for many applications.
The development of 447nm blue laser diodes is nothing short of a revolution for portable laser technology. The Hydra Pro brings blue laser light at higher powers into the palm of your hand at much lower prices than previously possible. Its ground breaking 447nm wavelength is not only captivating but can also produce fluorescence effects in some materials. A wide operating temperature range enhanced beam quality and low divergence result in maximum visibility. Diode technology means energy efficiency allowing this laser to operate three times as long as DPSS blue portable lasers. Available in power levels from >50mW to >400mW and fully Class IIIb FDA Compliant the Hydra Pro Blue Portable Laser is a perfect fit for many applications.
The Polaris is the world s most powerful visiblewavelength blue portable laser. Cuttingedge 447nm laser diode technology brings power levels previously only possible using benchtop blue lasers that cost tens of thousands of dollars into the palm of your hand at a fraction of the cost. Its ground breaking 447nm wavelength is not only captivating but can also produce fluorescence effects in some materials. Diode technology means energy efficiency allowing this laser to operate three times as long as DPSS blue portable lasers. Available in power levels from >50mW to >1W sustained output with a 100 duty cycle. >500mW and higher models include free laser safety goggles. With its unmatched power and brilliant blue wavelength the Polaris Blue Portable Laser is truly a guide star for the future of lasers.
The Polaris is the world s most powerful visiblewavelength blue portable laser. Cuttingedge 447nm laser diode technology brings power levels previously only possible using benchtop blue lasers that cost tens of thousands of dollars into the palm of your hand at a fraction of the cost. Its ground breaking 447nm wavelength is not only captivating but can also produce fluorescence effects in some materials. Diode technology means energy efficiency allowing this laser to operate three times as long as DPSS blue portable lasers. Available in power levels from >50mW to >1W sustained output with a 100 duty cycle. >500mW and higher models include free laser safety goggles. With its unmatched power and brilliant blue wavelength the Polaris Blue Portable Laser is truly a guide star for the future of lasers.
The Polaris is the world s most powerful visiblewavelength blue portable laser. Cuttingedge 447nm laser diode technology brings power levels previously only possible using benchtop blue lasers that cost tens of thousands of dollars into the palm of your hand at a fraction of the cost. Its ground breaking 447nm wavelength is not only captivating but can also produce fluorescence effects in some materials. Diode technology means energy efficiency allowing this laser to operate three times as long as DPSS blue portable lasers. Available in power levels from >50mW to >1W sustained output with a 100 duty cycle. >500mW and higher models include free laser safety goggles. With its unmatched power and brilliant blue wavelength the Polaris Blue Portable Laser is truly a guide star for the future of lasers.
- Dynamic liquids sky. - Animated sparkling stars. - DPSS green laser, red laser diode. - Firefly, laser firework, sky blasting, burst universe etc. - Sound activated and auto running. - Adjustable rotational speed. - Colorful light. - Suitable for KTB room, disco, pub, night club, family party etc. - Input: 220V.- Important Notice: Customers should be sure whether their countries are allowed to import Green/Red lasers before purchasing. If you're unsure of whether your country allows these kinds of products, we recommend you to contact the custom for confirmation. We will not be responsible for losses due to customs confiscation.
REAL.BIG. Fathead Wall Graphics are huge. The unique combination of high-quality vinyl and low tac adhesive means that Fatheads are safe for walls and can be moved and reused. Fatheads are officially licensed by the major sports leagues and entertainment giants and are 100% American made.
Autographed Bruschi Photograph - 8x10 Pumped Tedy Bruschi Autographed 8x10 Pumped Photo Every signed product comes fully certified with a Certificate of Authenticity.
Cuttingedge 447nm laser diode technology is what makes this blue laser pointer both unique and affordable. Keep everyone s attention with the Hydra s deep blue light. This
This Tutorial Text covers a wide range of material, from the basics of laser resonators to advanced topics in laser diode pumping. The subject matter is presented in descriptive terms that are understandable by the technical professional who does not have a strong foundation in fundamental laser optics...
Light emitting diode. Oleg Losev, List of LED failure modes, Organic light emitting diode, Miniature light emitting diode, Solid state lighting, LED lamp, LED power sources, Electrical polarity of LEDs, LED circuit, LED as light sensor Author: Miller, Frederic P./ Vandome, Agnes F./ McBrewster, John Binding Type: Paperback Number of Pages: 74 Publication Date: 2009/10/08 Language: English Dimensions: 5.98 x 9.01 x 0.17 inches
Clipper Clipmaster Clipping Machine - Blue Perfect for detailed clipping on horses, lambs and cattle, these lightweight, cool-running, versatile clippers will get the job done quickly and efficiently. Infinite speed settings and an adjustable tension kno
A kid who is still struggling with the loss of a parent has an unexpected challenge thrown in his path in this coming-of-age drama. Adam (Evan Peters) has just wrapped up his last year in middle school, and is waiting out the summer before he enters high school. Adam is still dealing with the death of his mother and younger sister in a car wreck two years earlier. In tribute to them, Adam hasn't cut his hair since the accident, while Adam's father (Chris Eigeman) prefers to blunt his own sorrows by drinking and giving his son bad advice. Given to angry outbursts of violence, Adam finds he's better off turning to his grandmother (Louise Fletcher) or Father Dan (Kevin Sorbo), an open-minded priest who prefers talking to kids on the basketball court rather than in the church rectory. Over the summer, Adam makes friends with Johnny (Bryan Burke), but he also gains an enemy -- Jerry (Donato Mario Alleva), an older student with a bullying personality and a hatred of long hair. ~ Mark Deming, Rovi
