Solid delay lines, made of piezoelectric quartz, from the book “Ultrasonic Delay Lines” published in 1963.
Sometimes I consider myself a fisherman. Computer programs and ideas are the hooks, rods, and reels. Computer pictures are the trophies and delicious meals. A fisherman does not always know what the waters will yield… Often the specific catch is a surprise.
This beauty, found in a random dump of Internet Archive books: a set of practice texts for (I think) reading shorthand, this one from 1851. Like alien language mixed with steampunk curly lettering.
I love my Raspberry Pi for tinkering with Linux. I can quickly try something on the more bare-bones OS than my Mac laptop, or use software that is otherwise not available to me. But sometimes SSH-ing into the low-power Pi doesn’t cut it and has left me frustrated. The options: buy a new computer just to run Linux (ok, but expensive for a once-in-a-while use) or install Linux on my Mac.
1. DOWNLOAD VIRTUALBOX
Oracle’s free VirtualBox software will let us install a variety of operating systems to play with. Download the current version for Mac here: https://www.virtualbox.org/wiki/Downloads
2. INSTALL VIRTUALBOX
We install VirtualBox like any other application. Once finished, make some new folders to store your OS’s and other files.
Create the folder Applications > VirtualBoxData
I would also suggest dropping the user manual PDF and VirtualBox_Uninstall.tool in there for later use. Learn more at https://www.sodapdf.com/pdf-editor/
Inside the new folder, create a folder called OS to store the operating systems, and a folder called VDI which stores our virtual files.
3. DOWNLOAD AN OPERATING SYSTEM
I’m running a Linux variation called Ubuntu – it’s popular, well maintained, and features a graphical interface similar to Mac OSX… which I immediately disable :)
Download Ubuntu (the desktop version) from here: http://www.ubuntu.com/download
Once it’s downloaded, it will unzip as a .iso file. Move it to the new OS folder you created in the previous step.
1. RESOLUTION SWITCHING
You may find that VirtualBox doesn’t let you change the size of the window. To change this, open up a Terminal window (control+alt+t) and type the following command:
sudo apt-get install virtualbox-guest-dkms
Restart VirtualBox and you should be able to change the size. Note this doesn’t seem to work for the command line, sorry.
2. BOOT TO COMMAND LINE
While the GUI of Linux is nice, I mostly just need the command line. Running an OS virtually already slows things down, so using a text-only interface works better for me. To boot to the command line instead, open a Terminal window and type:
sudo gedit /etc/default/grub
This will open a text editor where you can modify the following lines:
- Comment-out GRUB_CMDLINE_LINUX_DEFAULT=”quiet splash” by adding a # to the start of the line
- Change GRUB_CMDLINE_LINUX="" to GRUB_CMDLINE_LINUX="text"
#GRUB_TERMINAL=console by removing the
# at the start of the line
Save the changes and exit Grub. In the Terminal, run this command:
Then restart VirtualBox – you should boot to the Terminal now! You can always go to the GUI by using the command startx.
3. MOUNT EXTERNAL DRIVES
Not intuitive, mounting an external drive to the virtual OS takes a few steps.
- Plug in your drive. When it mounts to your Mac, eject it.
- In VirtualBox, go to Devices > USB Devices and select the drive. It will automatically mount.
- If running Terminal-only and your window freezes momentarily, hit Enter and it will come back.
These images from Craig Reynolds’ original 1987 paper describing Boids are so Vaporwave, and so good.
Some progress creating generative heatsinks – better mutated tube generation with Peter Lager’s shapes3D library (thanks!) and some nicer rendering within Processing.
In the mid-80s, the British TV show “Database” would broadcast software via audio over their end credits. Viewers could hold a mic up to the TV to capture it.
Down a punch-card rabbit hole today: not much info about this, but appears to be a Japanese-made toy loom that uses punch-cards to program patterns.