Tag: firefox profile

How to Run Firefox Quantum and Firefox Nightly Simultaneously

Yes, Firefox Quantum and Firefox Nightly can run together. Here’s how.

By Alexander Fox – Jun 6, 2018

How to Transfer the Contents of User Profiles in Firefox

If you are trying out a new Firefox-based browser, you can transfer the content of your old user profiles so all your items are intact. Here’s how to do it.

By Paul Ferson – Oct 15, 2014

When Bell Labs engineer Karl Jansky pointed a rotating antenna at the sky in 1932 looking for sources of transatlantic radio static, he kept picking up a faint hiss that peaked every 23 hours and 56 minutes, and he eventually realized he had become the first human to hear the center of the Milky Way.

Jun 5, 2026

The colour magenta does not exist anywhere in the spectrum of visible light, and your brain manufactures it on the spot whenever red and blue cones fire together, inventing a hue to fill a gap that physics never bothered to provide.

Jun 5, 2026

A contemplative scene with two scientists in a vintage laboratory setting.

When Harvard astronomer Cecilia Payne submitted her 1925 doctoral thesis arguing that the Sun was made almost entirely of hydrogen, the field’s senior figure Henry Norris Russell talked her into adding a line calling the result ‘almost certainly not real,’ and then published the same conclusion himself four years later to widespread acclaim.

Jun 5, 2026

When Edme Mariotte stared at marks on a wall in the 1660s, one mark vanished inside a six-degree hole where the optic nerve leaves the eye and the brain has been filling in wallpaper, sky, and faces ever since

Jun 5, 2026

When seismic waves from the Chicxulub impact reached what is now North Dakota roughly ten minutes after the asteroid struck, they appear to have triggered a ten-metre standing wave in an inland river that flung fish onto the bank and buried them under glass beads still falling from the sky.

Jun 5, 2026

Macro view of a smartphone displaying Google and other app icons on the home screen.

On 28 May 2009, Google demoed a product called Wave on stage at I/O for 80 minutes and got a standing ovation from developers who had no idea what they had just watched, and 15 months later the company quietly shut it down because almost nobody could explain to a friend what it was actually for

Jun 5, 2026

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Tag: firefox profile

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