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Explainer: Compression

Lossy and non-lossy compression explained, with examples and an outline of how JPEG compression is performed.

May 14, 2022 Macs, Technology

Pastel Portraits of Rosalba Carriera

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One of the most brilliant of the first wave of painters in pastels, a founding mother of the Rococo, and one of the greatest of all women painters.

May 13, 2022 General, Life, Painting

How to transfer files between Macs

Summary of AirDrop, network file sharing, target disk mode, and sneakernet, explaining how to use each and what they’re best at.

May 13, 2022 Macs, Technology

Apple has pushed an update to XProtect

Apple has just pushed an update to the data files used by XProtect, bringing its version number to […]

May 12, 2022 Macs, Technology, Updates

Paintings of Paul Signac 4: Two deaths and marriage

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Deaths of Van Gogh and Georges Seurat. Signac’ unsuccessful interiors, and his far more popular landscapes.

May 12, 2022 General, Life, Painting

Cormorant 1.4: getting more from Apple Archive

Now has three presets to control speed and energy consumption of compression and decompression, together with complete custom control.

May 12, 2022 Macs, Technology, Updates

Sheer Delight 4: Gone with the wind

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What is that princess doing dressed for a pageant, and what is happening to her swatch of carmine fabric? How billows express motion.

May 11, 2022 General, Life, Painting

Inside Apple Archive: performance and control

How to work out how many threads and which cores are needed to achieve a compression rate up to 1.7 GB/s, and how to estimate power and energy.

May 11, 2022 Macs, Technology

Colour Notes 4: Under no illusions

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A journey through some visual illusions show how a simple physical concept of human colour vision doesn’t work. It’s all about perception, not physics.

May 10, 2022 General, Macs, Painting, Technology

Inside Apple Archive: more than a compression format

Provided in Archive Utility and three command tools, its LZFSE compression even supports APFS special files like clones and sparse files.

May 10, 2022 Macs, Technology

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