Irregular Webcomic!

Archive     Blog     Cast     Forum     RSS     Books!     Poll Results     About     Search     Fan Art     Podcast     More Stuff     Random     Support on Patreon
New comics Mon-Fri; reruns Sat-Sun
<   No. 5137   2024-02-20   >

Comic #5137

1 Quercus: Yes, we can’t manipulate physical objects to fix the hyperdive. But we can manipuate electrical circuits.
2 Quercus: Serron, is the mass spectrometer plugged in?
2 Serron: Well of course.
3 Spanners: Quercus, brilliant! You’ve got a fantastic brain!
4 Quercus: It’s actually a wasp gall, but thanks.

First (1) | Previous (5136) | Next (5138) || Latest Rerun (2582) | Latest New (5176)
First 5 | Previous 5 | Next 5 | Latest 5
Space theme: First | Previous | Next | Latest || First 5 | Previous 5 | Next 5 | Latest 5
This strip's permanent URL:
Annotations off: turn on
Annotations on: turn off

Galls are swollen growths that occur on some plant species in response to parasitic organisms infecting the plant tissue. Galls can be caused by viruses, bacteria, fungi, and animals such as insects. One group of insects in particular, the gall wasps lay their eggs inside plant tissue, most often oak trees. The trees respond by producing a swollen growth around the developing larvae, which can reach significant sizes. One common type is known as oak apples.

One major historical use for oak galls was in the production of iron gall ink, for writing manuscripts. It was the major source of ink in Europe from the 5th to the 19th centuries. Oak galls are a concentrated source of tannic acid, to which is added a solution of iron sulphate. This produced a dark purplish-black ink which held fast to paper, parchment, and vellum, resisting smudging and washing unlike other types of ink available at the time. (Such as India ink, which is basically just black soot suspended in water.)

LEGO® is a registered trademark of the LEGO Group of companies, which does not sponsor, authorise, or endorse this site.
This material is presented in accordance with the LEGO® Fair Play Guidelines.

My comics: Irregular Webcomic! | Darths & Droids | Eavesdropper | Planet of Hats | The Dinosaur Whiteboard | mezzacotta
My blogs: (daily updates) | 100 Proofs that the Earth is a Globe (science!) | Carpe DMM (long form posts) | Snot Block & Roll (food reviews)
More comics I host: The Prisoner of Monty Hall | Lightning Made of Owls | Square Root of Minus Garfield | iToons | Comments on a Postcard | Awkward Fumbles
© 2002-2024 Creative Commons License
This work is copyright and is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 4.0 International Licence by David Morgan-Mar.