Beginners Guide Beginners Guide to Electronics by Martin T. Pickering Last updated on November 23, 2008 This book gives simplified explanations of how some electronic components work in a circuit. I first became interested in electronics when I was age 10 (as long ago as 1961). ©2008 Martin T. What's the Difference between A.C. and D.C.? How does a Resistor Work? All the colours for 5% tolerance resistors: How do Diodes Work? How do Transistors Work? Abbreviations Although we use the Greek symbol Omega W to represent “Ohms” it is frequently written as “R”. How does a Capacitor Work? What does a capacitor look like? How do Inductors Work? The Relay Bread Board and building a LED Flasher Building the LED Flasher Astable Multivibrator using two transistors
The Shelf Life of Food Foods unopened, COUNTER/PANTRY REFRIGERATOR FREEZER uncut or uncooked unless stated otherwise 1 DAY 1 MONTH 1 DAY 3 MONTH 1 MONTH 1 YEAR MACARONI & CHEESE 3-5 days PIZZA 3-4 days SALAD WITH DRESSING 3-5 days SANDWICHES 1-2 days SPAGHETTI & MEAT BALLS 1-2 days What's the Deal with Expiration Dates? The little dates you find food packages refer to quality, not safety, if properly stored, you can eat food beyond its expiration. It is always best to use your eyes and nose to check for possible food safety issues USE-BY & BEST BEFORE Provided voluntary by the manufacturer to let you know how long the product will remain at its absolute best. EXPIRES ON Found on perishables like meat and diary. SELL-BY This is usually found only on baby food or other products the government regulates with regard to dating. DESIGN Lindasy snow osborn HAPPY EATING FOREVER visual.ly
Maker Education Initiative | Every Child a Maker I've Been Using Evernote All Wrong. Here's Why It's Actually Amazing Bubble Machine These are the tools and materials that I used for my bubble machine. Yours will differ greatly depending on what you have available. This is a great project to do with scraps, and odds and ends all hacked together. To make it easier for others to reproduce this, I've done away with my normal format of exactly what to use and instead broken it down into the five main components the machine's made from. Trough: To hold the bubble solution. Bubble Ring: A ring of holes that will spin slowly through the trough picking up the bubble solution. Motion: A slowly moving motor to spin the bubble ring. Blower: Something with a bit of puff. Power: A power source or two for the blower and spinner. You'll also need nuts, bolts, hot glue or superglue to hold everything together. The files I used for laser cutting are included in this step.
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