Technology
Discover facts about technology. Small discoveries that change the way you see familiar things.
Technology
Ligatures fuse problematic letters together
In a font, letters such as “f” and “i” can be combined into one glyph to avoid an awkward overlap.
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Fractals use endless recursion for complex shapes
A fractal’s intricate patterns can be generated by repeating a simple mathematical rule over and over, producing detail at many scales.
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Clipping paths isolate objects from backgrounds
Designers draw outlines around subjects so digital tools can tell what to keep and what to cut out.
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Diffraction makes tiny apertures lose sharpness
Light passing through a tiny hole diffracts, spreading and interfering with itself; beyond a point, making the aperture smaller softens the image instead of…
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The hidden rules that keep fonts readable on screens
Font hinting uses tiny instructions to adjust letter shapes to a screen's pixel grid, keeping an 'H' from blurring into a smudge on low-resolution displays.
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Anamorphic lenses distort reality for wide shots
They squeeze incoming light horizontally to fit a wide scene onto a standard frame. The distortion also turns out-of-focus highlights into ovals.
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Checksums exist purely to detect data corruption
A checksum is a mathematical summary of a file. Comparing it before and after a transfer can reveal whether the data was corrupted.
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Base64 converts raw files into plain text
It turns complex files into long strings of standard letters and numbers so simple protocols can transmit them.
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Two's complement handles negative binary numbers
In two's complement, a negative number is represented by flipping the bits of its positive counterpart and adding one.
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A close-up selfie exaggerates the parts of your face nearest the camera
At a short distance, the nose is proportionally much closer to the lens than the ears, so it appears larger relative to them. Move the camera farther away and…
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Bezier curves use hidden control points for bends
Those handles are control points: moving them changes the curve’s direction and shape without placing points directly along the line.
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Chroma key forces systems to ignore green
By isolating the green backdrop, the system can cut people out of the image and replace their surroundings.
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When text turns into a jumble of symbols
When software reads text using the wrong regional encoding, the characters can turn into an unreadable jumble of symbols.
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Polarization actively blocks scattered light
Polarizing filters act like tiny blinds: they block certain angles of light, cutting reflections from surfaces such as water or glass.
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Glyphs include invisible formatting characters
Text can contain invisible formatting characters, and even an ordinary space is a defined character that separates words.
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Variable fonts contain infinite weight variations
A single file can generate a range of font weights on demand, rather than storing a separate file for each variation.
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Bit depth determines acoustic dynamic range
More bits allow a digital recording to represent more levels between silence and its loudest sound, widening the range of volumes it can capture.
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Gamut warnings alert when colors are unprintable
They mark colors that printer inks can't reproduce, even when those colors look vivid on a screen.
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Droste effect creates an infinite visual loop
The image repeats at smaller and smaller scales until pixel limits interrupt the pattern.
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Letter spacing manipulates horizontal text density
Adding space between letters stretches a word horizontally, giving a design a more deliberate look.
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Chromatic aberration bleeds color at the edges
Different wavelengths focus at slightly different points, creating purple or green fringes along high-contrast edges—especially with cheaper glass.
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That emoji may be several characters in disguise
Family emojis can be sequences of separate characters joined by invisible zero-width joiners, which make them display as one image.
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Line spacing controls vertical reading flow
Tight spacing can make readers lose their place and reread a sentence, disrupting the flow.
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ASCII art forces basic text to act as imagery
Letters, slashes, and brackets can work like tiny blocks of shading, letting a plain text document form a detailed picture.
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