Skip to main content

Geek Weekend (Paris Edition), Day 4: Institut Pasteur

Leaving my SO in bed at the hotel with a nasty bacterial infection and some antibiotics, I went with timely irony to visit the home and laboratory of Louis Pasteur at the Institut Pasteur. (It's pretty easy to find since it has a conveniently named stop on the Paris metro: Pasteur).


At the Institut Pasteur there's a wonderful museum that covers the life and work of Louis Pasteur (and his wife). It's housed in the building (above) where the Pasteurs lived. There's a single room of Pasteur's science and the rest of the house is Pasteur's home; so a visit is partly scienfitic and partly like visiting any old home. I was mostly interested in the laboratory (although seeing how he lived---pretty darn well!---was also worth it).

Pasteur wrote standing up at a raised table (much like old bank clerks used to use) and his lab is full of specimens that he worked on. There's a nice display about chirality which Pasteur had initially worked on while study tartaric acid in wine. (Pasteur determined that there were two forms of tartaric acid by painstakingly sorting tiny crystals by hand).

The rest of the lab covers immunization, pasteurization and the germ theory of disease. There was a nice display of Pasteur's bottles of chicken broth that he used to demonstrate the germ theory of disease. The bottles contain boiled broth and have a long tapering curved neck. Although the neck is open the shape prevents dust from entering and the broth sits undisturbed (as it has for 150 years).

In the same room there's also a big bottle of horse's blood that looks fresh despite its age, and there are detailed displays about immunization (and especially Pasteur's rabies vaccine).

The museum also has a lot of equipment used by Pasteur, such as vacuum pumps and autoclaves. It all has that lovely Victorian feel of wrought iron and brass.

The oddest part of the museum is the Pasteurs' burial chamber built beneath the house and in a totally over the top Byzantine style.

Note that the museum is only open in the afternoons during the week and that you must bring photo ID with you to get in since it is inside the Institut Pasteur.

Comments

Popular posts from this blog

Your last name contains invalid characters

My last name is "Graham-Cumming". But here's a typical form response when I enter it: Does the web site have any idea how rude it is to claim that my last name contains invalid characters? Clearly not. What they actually meant is: our web site will not accept that hyphen in your last name. But do they say that? No, of course not. They decide to shove in my face the claim that there's something wrong with my name. There's nothing wrong with my name, just as there's nothing wrong with someone whose first name is Jean-Marie, or someone whose last name is O'Reilly. What is wrong is that way this is being handled. If the system can't cope with non-letters and spaces it needs to say that. How about the following error message: Our system is unable to process last names that contain non-letters, please replace them with spaces. Don't blame me for having a last name that your system doesn't like, whose fault is that? Saying "Your

All the symmetrical watch faces (and code to generate them)

If you ever look at pictures of clocks and watches in advertising they are set to roughly 10:10 which is meant to be the most attractive (smiling!) position for the hands . They are actually set to 10:09.14 if the hands are truly symmetrical. CC BY 2.0 image by Shinji I wanted to know what all the possible symmetrical watch faces are and so I wrote some code using Processing. Here's the output (there's one watch face missing, 00:00 or 12:00, because it's very boring): The key to writing this is to figure out the relationship between the hour and minute hands when the watch face is symmetrical. In an hour the minute hand moves through 360° and the hour hand moves through 30° (12 hours are shown on the watch face and 360/12 = 30). The core loop inside the program is this:   for (int h = 0; h <= 12; h++) {     float m = (360-30*float(h))*2/13;     int s = round(60*(m-floor(m)));     int col = h%6;     int row = floor(h/6);     draw_clock((r+f)*(2*col+1), (r+f)*(row*2+1),

The Elevator Button Problem

User interface design is hard. It's hard because people perceive apparently simple things very differently. For example, take a look at this interface to an elevator: From flickr Now imagine the following situation. You are on the third floor of this building and you wish to go to the tenth. The elevator is on the fifth floor and there's an indicator that tells you where it is. Which button do you press? Most people probably say: "press up" since they want to go up. Not long ago I watched someone do the opposite and questioned them about their behavior. They said: "well the elevator is on the fifth floor and I am on the third, so I want it to come down to me". Much can be learnt about the design of user interfaces by considering this, apparently, simple interface. If you think about the elevator button problem you'll find that something so simple has hidden depths. How do people learn about elevator calling? What's the right amount of