Is this just an nroff and dBCodes thang, or can it be used in HTML?
It's a typesetting system oriented toward the use of mathematics. It existed before dBcodes or HTML ever existed.
There is a "latex2html" command for linux. Also wordpress has a latex plugin for its blog software. And I think Google's "blogspot" has something similar.
What typically happens with "latex2html", with the wordpress plugin and with dBcodes support, is that those use just the mathematics rendering part of latex. They use latex to typeset a mathematical formula, then make an image of that. Then the display the image in the web page. Percy would know more about that part, since he implemented it for his forum software.
Fundamentalism - the anti-American, anti-Christian branch of American Christianity
However, I found that on the CodeCogs site. I don't know them and here I am pulling one of their scripts into my site without knowing what all it does. I also don't know which browsers they support or whether their support would continue.
So some way to generate an image of the formula would probably be best unless there is some generally available way to support latex in HTML.
I've been working on a couple web pages about switching from the US Customary System of measurements (AKA "Imperial") to the metric system. I'm currently working on the page that offers some short-cut methods to approximate conversion but for the purpose of developing a feel for how much these measurements are. Part of that approach employs a Boy Scout skill we were taught in the 1960's in which we use parts of our body (no, not that part) to estimate lengths.
In that section, I'm including some methods from a German constellation atlas which estimate degrees of separation of sky objects with your hand held out at arm's length; from my page's draft:
quote:With your arm extended out before you (distance = 50 cm, about 20 inches):
thumb width = 2.5 degrees
closed fist minus thumb = 9 degrees
outspread hand, thumb to pinky = 22 degrees
I should also include what I had been taught in my youth, that you can estimate how long before the sun sets with the same method, but each finger of your hand represents 15 minutes.
My question is regarding an instrument I've seen in medieval woodcut prints which was used to measure angles of separation in the sky. Here is the description in my current draft:
quote:There was a Medieval astronomical instrument that I've seen in illustrations but don't know the name of. It was based on the same principles just described to measure the angle between objects. It was a piece of wood (about 1×1 and one yard long) that may have been graduated (ie, be marked with measurement lines). Towards the opposite end was a short cross member. Either the cross member was fixed and was itself graduated, or it could be moved along the long member until the objects being measured were at its ends. The user would place one end near his eye and sight down the length, adjusting the cross member (or sighting measurements on the cross member, depending on which design was used) to sight the objects being measured, and then read off the angle. You could use trigonometry to calculate what its dimensions would have be.
Is anybody familiar with that instrument and knows what it was called as well as just how it did actually work?