Notes
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A banner is designed for the crop, not for the canvas A channel banner is one image shown at several widths. Only the middle of it is guaranteed to survive on a phone. What a sample rate actually buys you Nyquist says 44.1 kHz already covers the audible range. Everything above it is headroom for processing, not for hearing. Three shapes cover every feed Square, tall portrait and full portrait. Every platform’s post sizes are variations on those, and the crop is the part to plan for. Aspect ratio is the part that matters 1080 by 1080 and 2000 by 2000 are the same picture at two sizes. Change the ratio and you change what is in the frame. A 100 Mbps line downloads at 12.5 MB/s Connections are sold in bits and files are measured in bytes. The factor of eight between them explains most disappointment. Why 10.0.0.9 sorts after 10.0.0.10 Because it was sorted as text. Storing an address as a number fixes the sort, the range query and the index all at once. Sixty thousand over the tempo One division gives every delay, reverb and gate setting in a track. The dotted eighth is the one worth understanding. Why a /24 gives you 254 usable addresses The number after the slash counts network bits. Everything else — the mask, the range, the two you cannot use, follows from it. A tint, a shade and a tone are three different things Add white, add black, add grey. The three words are not interchangeable and only one of them keeps the colour vivid. What a contrast ratio actually measures It runs from 1:1 to 21:1, green counts for seven times more than blue, and the formula is known to be imperfect. The colour wheel you learned is not the one your screen uses On the artist’s wheel red sits opposite green. On the wheel your CSS uses it sits opposite cyan. Both are right. Two speakers are three decibels, not twice as loud Decibels are a logarithm, so they add strangely. Three doubles power, six doubles voltage, and ten doubles what you hear.
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