#FreeSchool <---> Hashtag @freeschool@qoto.org

I use XMPP

B/c it is federated (like mastodon, or email); doesn't require a phone or a number. While supporting end-to-end OMEMO encryption.

Ever want to chat? about whatever topics really, or #infosec #it #tech #science #linux #software #art #music #foss #mastodon #programming #engineering #golang #rust #ruby #python even #javascript but I mostly like talking about XSS on that topic.

You can reach me at:
shehackedyou@xmpp.chat

I also setup a chat that for now is public:
shy@muc.xmpp.chat

New blog post! "Where is all of the fediverse?"

The fediverse is de-centralised, but it still needs to be hosted behind something, in this post I investigate where the most of the instances are, and working around caching proxies to get a better idea of how resilient to hosting disasters the ecosystem is.

https://blog.benjojo.co.uk/post/who-hosts-the-fediverse-instances

We’ve just published an update about this Mastodon trial which has been running for the last 6 months – you can read it here: https://www.bbc.co.uk/rd/blog/2024-02-extending-our-mastodon-social-media-trial

We are going to continue our trial here for at least another six months while we share our findings internally and seek more engagement from other BBC teams. We are also planning to start researching ways to publish more BBC content using ActivityPub.

#mastodon #ActivityPub #socialmedia

As India continues to lead the world in the number of internet shutdowns, now for the 6th consecutive year, the urgency for reform cannot be overstated.

Be part of the fight against internet shutdowns, become a member of IFF! 9/9

https://internetfreedom.in/

!!
Indian Railways has floated a tender for the installation of 3.3L facial recognition-enabled CCTV cameras inside railway coaches with a central face-matching server to surveil & identify passengers (adults & children) to ‘curb crime’. (1/7)

I finally deleted my Google account today and didn't instantly die. Perhaps this will be easier than I thought?

From Signal's infrastructure cost from November, 2023 fundraising blog post https://signal.org/blog/signal-is-expensive/

> Storage: $1.3 million dollars per year.
> Servers: $2.9 million dollars per year.
> Registration Fees: $6 million dollars per year.
> Total Bandwidth: $2.8 million dollars per year.
> Additional Services:

> $700,000 dollars per year.

> Current Infrastructure Costs (as of November 2023): Approximately $14 million dollars per year.

#signal #infrastructure

The raw materials for Lithium Ion batteries:
Cobalt, nickel, and lithium
carry a variety of concerns,
including the environmental damage of mining.

Also, much of the supply is controlled by US geopolitical rivals such as China,
and some of the mining takes place in countries with inadequate labor standards.

In contrast, a sodium-ion battery relies on an element—sodium—that you can find in table salt and ocean water.

Among the other benefits, sodium-ion batteries perform better than lithium-ion batteries in extreme cold.

CATL has said its new battery works in temperatures as low as -40° Fahrenheit.

Also, a sodium-ion battery has much lower risk of fire.

When lithium-ion batteries sustain damage, it can lead to “thermal runaway,” which triggers a dangerous and toxic fire.

The process of manufacturing sodium-ion batteries is similar to that of lithium-ion batteries, or at least similar enough that companies can shift existing assembly lines without having to spend heavily on retooling.

But sodium-ion batteries have some disadvantages.

The big one is low energy density compared to lithium-ion.

As a result, an EV running on a sodium-ion battery will go fewer miles per charge than a lithium-ion battery of the same size.

“That is just what nature has given us,” Srinivasan said. “From a physics perspective, sodium batteries inherently have lower energy density than lithium batteries.”

A typical sodium-ion battery has an energy density of about 150 watt-hours per kilogram at the cell level, he said.

Lithium-ion batteries can range from about 180 to nearly 300 watt-hours per kilogram.
https://c.im/@cdarwin/113608017263897150

7 December 1939 | A Dutch Jewish boy, Joan Vintura, was born in Amsterdam.

In September 1943 he was deported to Auschwitz and murdered in a gas chamber after the selection.