Express Shop!
Search Our Stuff
View Cart (0)
Sign In/Up! (It's Worth It!)
Home
/ Items tagged "geekery"
Image Viewing Preferences
You now have the option to view our web site with dazzling color photos or with our traditional hand-drawn line art. It’s a big decision, but don’t worry; you can always change your mind later. Choose your path below. Thanks! If you have a sciplus.com web account we can remember your changes. Sign in to your account or create an account.
LEDs By The Dozen
Light emitting diodes. Solid state devices that provide the ubiquitous power and indicator lights on your electronic gadgetry. Unlike lamps, there are no filaments that glow. Rather, some two volts of DC power at a miniscule 10 to 20 milliamps of current get the chemistry excited, and they just plain emit. Emit is a good word, too, as they don't really cast light, but glow brightly. We have a nice assortment of 3 and 5 MM diameter sizes in red, green, orange, and yellow. The longer lead is always positive, the shorter always negative, and you always need a current limiting resistor (about 500 to 1,000 ohms for 5 to 9 volt DC sources) to keep the current in the 10-20 MA range. If that's Greek to you you're either going to blow a lot of LED's or learn to change incandescent indicator lamps ! !
 |
6796 LED ASSORTMENT |
First Surface Mirrors
Optical imaging folk insist that their reflective surfaces be on top of the glass, because an optically minor “ghost” is created with back surface mirrors. These “First Surface” optical mirrors generally also have better glass and flatter surfaces than their household brethren. Delicate, with the fragile reflective surface exposed, they carry the prices that precision demands. If you are playing with lasers, photography or optical alignment, the first surface items below are what you need. Dimensions are included in the description as width x length x thickness, all in mm.
|
69134 MIRROR, FS, 1.5 X 1.5 X 1 | |
|
68361 MIRROR, FS, 77 X 194 X 3 | |
|
68677 MIRROR, FS, 79 X 140 X 2.8 |
Don't Forget Your Rubbers
Protect your feet and your footware with our bright yellow disposable plastic boots. They slip possibly over a stout pair of workboots-size eleven and smaller, we guess. The disposable boots are too thin to be worn alone and designed to work with liners we also carried but have since sold out on. Our package of (6) is of course (6) pairs.
|
26256 DISPOSABLE BOOTS |
Silly Putty!
WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 yrs.
The real deal. 2-1/2" long red egg-shaped container with a blob of Silly PuttyTM inside. Does anyone need me to explain all the fun you'll have with Silly Putty? I thought not. Just get some today!
|
89935 SILLY PUTTY |
Motor Along
WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 yrs.
Everything you need to build a little DC motor is included in this kit (except sandpaper, screwdriver, scissors and, of course, an AA battery). The instructions are simple and explain the theory as well as assembly. Fun and educational.
|
91508 TOY MOTOR KIT |
50,000 Volts
That's what you get with this tesla coil!! Brand new, commercial item, great for classroom demonstrations and experiments. The 50,000 volt capacity generator radiates high frequency energy through space... enough to light fluorescent tubes two feet away. It uses 115 VAC (60 Hz) with an electro-magnetically operated interrupter buzzer, high voltage capacitors, inductive coil transformer, and a monopolar high frequency transformer generator to do the trick. 11" high, with a 6" sq. x 2" high protective housing for the generator. Includes accessories and instruction booklet with 19 experiments. Pretty amazing. But please, this is not a toy and should be used only under adult supervision.
|
70301 50,000 VOLT TESLA COIL Note: This item is not eligible for Expedited Shipping or delivery to Alaska, Hawaii, or the Territories. |
Tiny LED
This tiny 3 mm LED sits in a 5/32" x 1/4" x 7/32" black-plastic box with PC board mounts. At 2-3 volts it glows green and draws 40 mA.
|
33823 2-3 VDC LED |
Mini Air Compressor
Nifty device that takes maxi air and squeezes it down into a mini condition. The device is roughly 6-1/2"" long x 6" tall x 4" wide. It has a 10 ft. cord that plugs into an auto lighter socket: i.e. it runs on 12VDC @ 10 amps. Air output is via a 12" hose with a variety of valve adapters for tires, soccer balls, rubber rafts, and just dusting off the environment. Complete with a 0-250 psi gauge. Which should be plenty of pressure to explode a weak bike tire or flimsy beach ball, so please be careful!
|
23271 AIR COMPRESSOR, 12 VDC |
Popular Tags:
cld
bepureawesome
schoolBus
|
Add Tag 
Power Grip
An awesome tool for the shop or garage. The heavy–duty Power Grip Vacuum Cup grabs sheet metal, glass, or any flat, smooth surface. Perfect for pulling out dents in metal or playing Suction Man on a skyscraper. Our large size has a 4” dia suction cup. It has a quick-release handle and high-impact nylon bodies in neon red.
|
92037 LG VACUUM CUP |
Popular Tags:
demonstrations
geekery
GK
|
Add Tag
LEDs And More LEDs
LEDs in assorted colors and sizes for displays, hobbies, robotics, electronics and more.
| Color | Size | ||||
|---|---|---|---|---|---|
|
12534 4MM 3V LED RED | Red | 4mm Dia. | Details | |
|
31632 5MM 3V LED YEL | Yellow | 5 mm | Details | |
|
31620 5X3MM 3V LED ORNG | Orange | 5 mm x 3 mm Dia. | Details | |
|
31623 9X5MM 6V LED GRN | Green | 9 mm x 5 mm Dia. | Details |
Peltier Heat Pump
High tech comes to Am Sci & Surp!! It is here in the form of a Peltier junction, a thermo-electric device that translates electric power into heat, and perversely, into cool. Apply current @ 3-12 VDC to the gizmo and it extracts thermal energy from one face, thereby cooling it. The heat is dumped onto the other face, thereby heating it. Please note: you must use a heat sink on the hot side or the junction will fry itself, since it can quickly create a 65° C temperature differential in a no load situation. Stack two, or build a cascade to increase the thermal differential created. Or run it backwards. Apply heat or cold to the relevant face and produce a current. Amazing for science projects and experiments. Practical for coffee warmers, beer coolers and mini-refrigerator or warming oven applications. Comes with instructions. Large is 1-9/16" sq. x 3/16" thick.
|
89143 LARGER PELTIER JUNCTION |
Shop by Popular Tags
Click a phrase to shop for products associated with that phrase (AKA "Tag"). More popular tags appear bigger. Learn more »
