From the Etsy page: Since I started teaching electronics 12+ years ago I often find myself having to explain my students over
and over how an specific component look like before they can go digging in the electronics cabinet, "a bicolor LED? it looks
like an LED but it has three legs instead of two and make sure it doesn't have four, those are RGB LEDs" or "What you put in
your breadboard is not a 555 chip but an Or Gate chip, see how it has fourteen pins instead of eight?".
So I finally decided to make a "TABLE OF ELECTRONIC COMPONENTS", in which I hand drawn the 25 most commonly used electronic
components with their corresponding names and symbols and I grouped them in seven different categories; Switches, Power Sources,
Magnetic Inductive Devices, Semiconductors, Capacitors, Display Technologies and Resistors.
The Unihedron website has a great poster of the Electromagetic Spectrum.
from Unihedron.com:
"This poster includes all known ranges of EMR
including gamma rays, X-rays, ultraviolet light, visible light, infrared, microwaves, radio waves (ULF, VLF, LF, MF, HF,
long, short, HAM, VHF, UHF, SHF, EHF), cosmic microwave background radiation and brain waves, all organized by octaves.
The audio frequency spectrum is also included. Descriptions are included for all ranges and properties of EMR including
reflection, refraction, LASER, television, gravity waves, emission and absorption. There is also a handy chart of SI unit
prefixes ranging from yocto to yotta."
In 1966 my grandmother gave the "Life Science Library" book "MATTER". Within this classic book was a
section about the elements (BTW, there were only 103 back then). It included a picture and short discussion of
each element. This always intrigued me and stirred my imagination. Forty some years later this amazing Poster and Book
take the exploration of the elements to a new level. There are many more items for sale at the PeriodicTable.com.
From Periodictable.com:
These periodic tables and books are based on seven years of painstaking photography. Praised by Nobel Laureates, teachers
and artists alike, these posters and images are seen on TV and in magazines and museums around the world.
This is one of my favorite new books. An amazing and fascinating compilation of incredibally sharp
photographs that covers the building blocks of everything we know and are. If you like science
you'll love this book.
For many years this great infographic poster has allowed a mortal human to grasp the unimaginable
spending that our great goverment does. This years budget is 1.415 Trillion dollars.
From Wallstats.com:
"Death and Taxes" is a large representational graph and poster of the federal budget. It contains over 500 programs
and departments and almost every program that receives over 200 million dollars annually. The data is straight from
the president's 2011 budget request and will be debated, amended, and approved by Congress to begin the fiscal year.
All of the item circles are proportional in size to their funding levels for visual comparison and the percentage
change from both 2010 and 2001 is included so you can spot trends.
Buy a copy of the Death and Taxes poster and see where your tax dollars and debt go.
Wow, Visibone has all kinds of cool charts and reference material for both color charts and computer language references including HTML / CSS Example Chart,
HTML Tag Chart, CSS Style Chart, HTML Character Chart, , Java Script Chart, Font Chart, DOM Chart, Regular Expressions Chart, MySQL Statements and Functions Charts.
Visit their site.
Visibone also has an interesting world map of Internet country codes.
Phone codes too, alphabetic and numeric lists. Look up four ways: code, name, location, or phone.
