This chart shows how the water level has been at around +100 cm from normal lately.
IOM Euro pictures from Dubrovnik
Pictures by Eero Laurila and Olle Martonen from the 2008 IOM European Championships last week in Durbovnik, Croatia.
Laminar Flow
Life is simple at Reynolds numbers much below 0.1
Four 200 x 50 um inlet channels join into one 800 x 50 um main channel. The blue and clear liquids mix only by diffusion. See also here.
Leeds, Yorkshire
I've spent the week in Leeds looking three single-molecule fluorescence microscopes (FCS a.k.a. fluorescence correlation spectroscopy, ALEX a.k.a. alternating laser excitation fluorescence spectroscpy , and TIRF a.k.a. total internal reflection fluorescence microscopy).
Flying back to Helsinki with KLM took close to 24 hours since I missed my connecting flight (due to KLMs late incoming aircraft in Leeds) and had to stay an extra night at Schipol...
IOM Sail Camera
Jari got a Hero camera which takes still pictures and video and stores them on a memory card. It weighs about 120g and it's watertight, so it's possible to put it on-board and take some pictures while sailing. Seems to work quite well. This could be used later for looking at how the mast bends in different winds and with different shroud and/or spreader positions. (See here for some statistics from the ongoing IOM Euros).
MicroMagic sailing
The fifth MicroMagic ranking race was sailed today in Vuosaari. Due to the location of the sailing water the wind came with variable strength from a variable direction in all races. I was sailing a loaned boat, and will do so in two weeks time at the national event also (20+ entries I hear!). Might think about a microMagic of my own during the spring (no promises...). Results to appear here.
Pictures by Jorma Ojama.
1949 Schaublin lathe
It's about 15 years since I learned to use a lathe at school. Now we got a vintage 1949 Schaublin lathe to the workshop, so I will have to re-learn the art of making all things round again. The lathe will be handy to have around for many projects, both work and play.
Spectrometer test
We got a new Ocean Optics spectrometer to the lab today and naturally I had to play around with it a bit in the evening. Compared to our 20+ year old Jobin Yvon rotating-grating thing this one is a very small tidy box, with data transmission and power over USB, and an SMA-connector for light input through a 600um core fiber.
Some sample spectra below (the filenames describe the light-source).
Servo setup with m5i20 and EMC2
By popular demand, a schematic which roughly shows the electrical connections of our cnc-mill setup. Most of it fits inside one box (also shown here). The m5i20 I/O connectors are on the left, followed by the optoisolator cards. E-stop chain in the middle, servo-amplifiers and motors to the right. Jog wheel at the bottom. The small VFD board I made later is not shown.
Nikon TE-2000 objective holder in steel
I'm fitting some more equipment around a Nikon TE-2000 microscope, and the stock objective turret is in the way. Machined this objective holder in steel yesterday.
