Tags: light

93

sparkline

Tuesday, October 7th, 2025

Decontrolled

I was supposed to be in Cork over the weekend.

Not only was it high time I paid my mother a visit, but the Cork Folk Festival was happening too. So I booked some relatively cheap plane tickets for myself and Jessica back in August and noted down the days in my calendar.

We didn’t end up getting our flight. This time it wasn’t because I messed up the flight times. We made it to Gatwick airport in plenty of time. That’s when we saw that our flight was delayed.

See, Storm Amy was moving in. We were hoping to get into Cork before the storm hit, but now with the flight delayed, that wasn’t likely. In fact, it was more likely that the flight would just get more and more delayed and possibly even get diverted.

To start with, we settled in at the airport, prepared to spend an hour or two more than we had planned. But, sure enough, the delays kept piling up. It was time to make decision; wait it out in the hopes that we’d eventually make a very bumpy landing in Cork, or cut our losses and run.

I quickly looked up flights for the next couple of weekends and spotted some cheap ones a fortnight away. I booked them and then called my mother to tell her we wouldn’t be showing up that night, but we’d see her in a couple of weeks.

Alright then, time to go home.

Wait a minute …how exactly are we supposed to leave the airport other than on an airplane?

It turns out there’s a process called “decontrolling”. You need to find someone from the airline (or in our case, a third-party contractor operating on the airline’s behalf) who has the security privileges to walk you back out. But you still need to go through passport control …even though you never left the building.

Luckily we didn’t have any checked luggage or it would’ve gotten complicated. As it was, it was just weird. It was all very City And The City.

That flight we abandoned did finally take off …six hours late. By that time we were back home on the sofa eating pizza and listening to the wind gusting outside. I think we made the right choice.

Friday, February 21st, 2025

The Shape of a Mars Mission (Idle Words)

You can think of flying to Mars like one of those art films where the director has to shoot the movie in a single take. Even if no scene is especially challenging, the requirement that everything go right sequentially, with no way to pause or reshoot, means that even small risks become unacceptable in the aggregate.

Wednesday, October 23rd, 2024

In 1979, two books shaped my formative years • Supernatural Detective’s Field Guide

This is such a great project from Jon—a mashup of two books from his childhood!

Put that RSS feed in your feed reader.

Sunday, September 15th, 2024

The Neverending Story

Since the early days of the web, large corporations have seemingly always wanted more than the web platform or web standards could offer at any given moment. Whether they were aiming for cross-platform-compatibility, more advanced capabilities, or just to be the one runtime/framework/language to rule them all, there’s always been a company that believes they can “fix” it or “own” it.

Applets. ActiveX. Flash. Flex. Silverlight. Angular. React.

Tuesday, May 21st, 2024

The Lunacy of Artemis (Idle Words)

Maciej rips NASA’s Artemis programme a new one:

Advocates for Artemis insist that the program is more than Apollo 2.0. But as we’ll see, Artemis can’t even measure up to Apollo 1.0. It costs more, does less, flies less frequently, and exposes crews to risks that the steely-eyed missile men of the Apollo era found unacceptable. It’s as if Ford in 2024 released a new model car that was slower, more accident-prone, and ten times more expensive than the Model T.

When a next-generation lunar program can’t meet the cost, performance, or safety standards set three generations earlier, something has gone seriously awry.

Thursday, February 22nd, 2024

PageSpeed Insights bookmarklet

I’m a little obsessed with web performance. I like being able to check a page’s core web vitals quickly and easily.

Four years ago, I made a Lighthouse bookmarklet. Whatever web page you were on, when you clicked on the bookmarklet you’d get the Lighthouse results for that page. Handy!

It doesn’t work anymore. This is probably because Google are in the loop. Four years is pretty good innings for anything involving that company.

I kid (mostly). Lighthouse itself is still going strong, despite being a Google product. But the bookmarklet needs updating.

Rather than just get Lighthouse results, I figured that the full PageSpeed Insights results would be even better. If your website is in the Chrome UX report, you get to see those CrUX details too.

So here’s the updated bookmarklet:

PageSpeed Insights

Drag that up to your desktop browser’s bookmarks toolbar. Press it whenever you want to test the page you’re on.

Sunday, October 1st, 2023

Why We’ll Never Live in Space - Scientific American

In space travel, “Why?” is perhaps the most important ethical question. “What’s the purpose here? What are we accomplishing?” Green asks. His own answer goes something like this: “It serves the value of knowing that we can do things—if we try really hard, we can actually accomplish our goals. It brings people together.” But those somewhat philosophical benefits must be weighed against much more concrete costs, such as which other projects—Earth science research, robotic missions to other planets or, you know, outfitting this planet with affordable housing—aren’t happening because money is going to the moon or Mars or Alpha Centauri.

Thursday, March 2nd, 2023

The Great Gaslighting of the JavaScript Era | The Spicy Web

We were told writing apps with an HTML-first, SSR-first, progressively enhanced mindset, using our preferred language/tech stack of choice, was outdated and bad for users.

That was a lie.

We were told writing apps completely using frontend-y JavaScript would make our lives easier.

That also was a lie.

I agree with pretty much every word of this article.

Thursday, January 5th, 2023

A CSS challenge: skewed highlight — Vadim Makeev

I did not know about box-decoration-break—sounds like a game-changer for text effects that wrap onto multiple lines.

Thursday, October 7th, 2021

My Challenge to the Web Performance Community — Philip Walton

I’ve noticed a trend in recent years—a trend that I’ve admittedly been part of myself—where performance-minded developers will rebuild a site and then post a screenshot of their Lighthouse score on social media to show off how fast it is.

Mea culpa! I should post my CrUX reports too.

But I’m going to respectfully decline Phil’s advice to use any of the RUM analytics providers he recommends that require me to put another script element on my site. One third-party script is one third-party script too many.

Tuesday, September 14th, 2021

Designing Beautiful Shadows in CSS

This is a great tutorial—I just love the interactive parts that really help make things click.

Tuesday, April 20th, 2021

Global performance insights for your site | Lighthouse Metrics

I hadn’t come across this before—run Lighthouse tests on your pages from six different locations around the world at once.

Sunday, March 14th, 2021

Solar Protocol

This website is hosted across a network of solar powered servers and is sent to you from wherever there is the most sunshine.

Monday, December 14th, 2020

Cameras and Lenses – Bartosz Ciechanowski

This is a truly wonderful web page! It’s an explanation from first principles of how cameras and lenses work.

At its most basic, it uses words which you can read in any browser. It also uses images so if your browser supports images, you get that enhancement. And it uses interactive JavaScript widgets so that you get that layer of richness if your browser supports the technology.

Then you realise that every post ever published on this personal site is equally in-depth and uses the same content-first progressive enhancement approach.

Tuesday, December 1st, 2020

Time Lords | Lapham’s Quarterly

A fascinating look at the history of calendrical warfare.

From the very beginning, standardized global time zones were used as a means of demonstrating power. (They all revolve around the British empire’s GMT, after all.) A particularly striking example of this happened in Ireland. In 1880, when the United Kingdom of Great Britain and Ireland declared GMT the official time zone for all of Great Britain, Ireland was given its own time zone. Dublin Mean Time was twenty-five minutes behind GMT, in accordance with the island’s solar time. But in the aftermath of the 1916 Easter Rising, London’s House of Commons abolished the uniquely Irish time zone, folding Ireland into GMT, where it remains to this day.

Wednesday, September 23rd, 2020

Blacklight – The Markup

This is an excellent new tool for showing exactly what kind of tracking a site is doing:

Who is peeking over your shoulder while you work, watch videos, learn, explore, and shop on the internet? Enter the address of any website, and Blacklight will scan it and reveal the specific user-tracking technologies on the site—and who’s getting your data. You may be surprised at what you learn.

Best of all, you can inspect the raw data and analyse the methodology.

There are some accompanying explainers:

Friday, July 3rd, 2020

Dark mode revisited

I added a dark mode to my website a while back. It was a fun thing to do during Indie Web Camp Amsterdam last year.

I tied the colour scheme to the operating system level. If you choose a dark mode in your OS, my website will adjust automatically thanks to the prefers-color-scheme: dark media query.

But I’ve seen notes from a few friends, not about my site specifically, but about how they like having an explicit toggle for dark mode (as well as the media query). Whenever I read those remarks, I’d think “I’m really not sure I’ve got time to deal with adding that kind of toggle to my site.”

But then I realised, “Jeremy, you absolute muffin! You’ve had a theme switcher on your website for almost two decades now!”

Doh! I had forgotten about that theme switcher. It dates back to the early days of CSS. I wanted my site to be a demonstration of how you could apply different styles to the same underlying markup (this was before the CSS Zen Garden came along). Those themes are very dated now, but if you like you can view my site with a Zeldman theme or a sci-fi theme.

To offer a dark-mode theme for my site, all I had to do was take the default stylesheet, pull out the custom properties from the prefers-color-scheme: dark media query, and done. It took less than five minutes.

So if you want to view my site in dark mode, it’s one of the options in the “Customise” dropdown on every page of the website.

Tuesday, June 30th, 2020

The Whimsical Web

A collection of truly personal sites.

This site is meant to showcase how a more personal web could look like, and hopefully give you some inspiration to make your own corner of the web a bit weirder.

Of course Cassie’s site is included!

Monday, June 1st, 2020

Sass Color Functions in CSS | Jim Nielsen’s Weblog

I’m not the only one swapping out Sass with CSS for colour functions:

Because of the declarative nature of CSS, you’re never going to get something as terse as what you could get in Sass. So sure, you’re typing more characters. But you know what you’re not doing? Wrangling build plugins and updating dependencies to get Sass to build. What you write gets shipped directly to the browser and works as-is, now and for eternity. It’s hard to say that about your Sass code.