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Engineering: explore STEM content (page 4 of 27) · openstem
Explore STEM Content
Search the community's STEM library — free to study, yours to make your own.
Engineering
Circuits, mechanics, materials and design on openstem — flashcards, notes, quizzes, sketches and flowcharts shared by the community. Study free, or clone anything into your library.
What is a swamp cooler (evaporative air cooler)?1 / 8
A machine that blows air through a wet pad before sending it into a room. Water evaporating from the pad pulls heat out of the air passing through, so the air that reaches the room is cooler than the air that went in.
Gear ratio = teeth on the driven gear ÷ teeth on the driving gear. The driving gear is the one turned by the motor or your hand; the driven gear is the one it turns.
Electricity to sound A buzzer and a speaker do the same basic job. Give one power and a tiny part inside starts moving very fast. That fast movement is vibration, and it's how electricity becomes something you can hear. What vibration is A
Everything is made of something A chair might be wood, a spoon metal, a bottle plastic, a shirt fabric. What something is made of is its material, and different materials behave in completely different ways. Four words engineers use A mater
A schematic is a connection map The symbols are international, so a schematic drawn anywhere can be built anywhere. The symbols to know Tracing a loop One path means the switch owns the whole circuit. Drawn open, the bulb cannot light howev
Filtration is the process of removing unwanted particles and contaminants from water by passing it through a material that physically traps or chemically absorbs them, leaving cleaner water on the other side.
Three routes, and knowing which one is doing the work Wherever there's a temperature difference, heat moves from warm to cool. It just doesn't always take the same route, and spotting which one is active is the first step to speeding it up
A sudden sideways bowing failure of a slender member under a compressive (squeezing) load — the column snaps sideways well before the material itself would crush or yield.