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A LITTLE SOMETHING WORTH KNOWING

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TechnologyOne small ahaInvention

Willis Carrier developed an early modern system of this kind to control temperature and humidity in a printing plant.

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TechnologyOne small aha
Your new ahaAir Conditioning

Air Conditioning: Made indoor climate control practical for buildings and homes. Source: Air conditioning ↗

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  1. 21Hubert Cecil Booth's early powered version of this suction-cleaning machine was horse-drawn.IDENTIFY
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  2. 22The Apple I and Apple II helped popularize this class of computer intended for individual use.IDENTIFY
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    Steve Wozniak co-designed the Apple I and II, helping bring computing into ordinary homes.

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  3. 23Joseph Glidden patented an influential form of this fencing material with sharp points along twisted strands.RECALL
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    Joseph Glidden's barbed wire transformed land fencing and played a major role in settling the American West.

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