Researcher in optics and photonics, just hanging around HN because I enjoy both the diversity of the topics and also the way comments are moderated.
I can't remember when I discovered HN, but I know I went from /. to digg to reddit them HN.
I hope HN will last a bit longer then the others before jumping the shark...
(Scientist chiming in, albeit not working in a relevant field for this discussion)
In fact, several well-respected scientists are calling for a scientific and unbiased debate on the origin of covid, as it is now almost impossible for scientists to simply mention lab origin as a possible origin to study.
Here is one of the last papers I've seen on this subject:
Yes, you can call it a spatially-resolved FTSI, that's correct.
There is a whole field of research around FTSI hyperspectral imagers.
The big challenge is to get fast enough to get a decent time-resolution.
To explain why this is „suddenly“ about time-resolution: the mirror on the translation stage is moved back and forth which changes the length of one arm of this interferometer. This movement takes time but is necessary as the interference pattern changes with position of the mirror. These changes are recorded and allow to compute the spectrum. Since the scanning takes time, this limits how fast images/spectra can be recorded.
If only we could do that!
But with ldap accounts, nfs-mounted files and Labview licence server, everything stops working whenever the network is down/unreachable...
We managed to get away from proprietary software for our simulations needs and moved to oss that runs on both Windows and Linux.
But we have not been able to get rid of Labview & Windows in the lab.
I'll be happy to hear about your experience here...
In my field, labview has been mostly replaced by python for building experiment control systems. Some groups manage to run their labs on Linux with maybe one dedicated Windows machine for stubborn hardware. In my setups we use quite a lot of Windows-only hardware, to Linux is not really an option.
OK, do you have any reference for the python modules they use?
I must admit that for GUI, nice interactive plots, motion control & DAQ, it's a bit difficult to be on par with Labview.
In particular, it's usually quite easy and fast in Labview to hack together a small VI to do something like move, grab data, plot, repeat with the ability to zoom, change scale, etc while the acquisition is running.
Do you know of any example combining all or part of these functionalities?
I like using PyQt5 for the GUI and PyQtGraph for interactive plots. Using matplotlib as a Qt widget is also possible, but it is quite slow and tends to leak memory when dynamically updating the data. On Windows I use the NI VISA library with pyvisa for most hardware access. There are open source alternatives for Linux such as pyvisa-py and linux-gpib that work quite well for most devices connected with Ethernet, USB, and GPIB.
Well, phosphorescence or fluorescence are basically the same thing: light emission when going from an excited to non-excited state. Many, many materials exhibit some form of light emission when you shine a laser on them, provided that you shine with the right wavelength...
