NFPA 70B covers maintenance requirements for electrical equipment installed per NFPA 70 (NEC), excluding consumer appliances for home use. Maintenance professionals ...

"Joe and Josie" diagrams from Measure of Man: Human Factors in Design original and revised editions, includes weight, span, akimbo and other measurements. Symbol Sourcebook posters with transportation ...

Have you ever found yourself staring at a blank page, trying to organize a complex idea or process, but not knowing where to start? Whether it’s mapping out a workflow, designing an organizational ...

In his book The Mathematical Universe, mathematician William Dunham wrote of John Venn’s namesake legacy, the Venn diagram, “No one in the long history of mathematics ever became better known for less ...

Join us this week as we decode the symbols commonly found in boiler wiring diagrams. Discover how to recognize and understand the significance of each symbol in this quick guide. Safety notice: Always ...

Jean-Michel Basquiat, "Boy and Dog in a Johnnypump," 1982. Acrylic, crayon, and spray paint on canvas; 96 × 164 in. (240 × 420 cm.) Private collection. All images by Jean-Michel Basquiat, all ...

Jane Richardson never considered herself an artist. Then, in the late 1970s, the structural biologist found herself in need of some colored pencils, pastels and sketching paper. Richardson, a ...

Firstly, consider the purpose of your diagram. Are you trying to show a process, illustrate a relationship, or compare data? Your goal will determine the type of diagram you choose, be it a flowchart, ...

Astrology uses constellations to predict events, but this is not scientifically proven. The zodiac signs are based on ancient observations and don't perfectly align with modern astronomy. Astrological ...

When I saw this year’s Supercon Vectorscope badge, I decided that I had to build one for myself. Since I couldn’t attend in-person, I immediately got the PCBs and parts on order. Noting that the ...