Recent content by martynk

A pulsar pulses because it is a rotating object transmitting radiation in a similar fashion to the way a traditional lighthouse flashes as the rotating mirror concentrates the light in a specific direction. We only detect the radiation when the light beam is pointing towards us or in the case...

That would be interesting but I certainly wouldn't have the time for that. I do need to head up to the Dee estuary and collect some samples. I'll also take a look at the tidal flats and see if there are any unusual patterns

Thanks, that is a really helpful insight. I hadn't considered the impact of the coriolis force.

Yes, thanks. I am aware of the temperature coefficient. Logging temperature is (or should be) fairly straightforward using an off the shelf i2c device.

Wow I didn't expect so many responses. Thank you. Building the instrument isn't too much of a problem but buying a ready made meter would be good for calibration. What I want to get to, eventually, is to measure the salinity gradient between fresh water and salt water, so I will end up doing...

Hi Not really sure where I should post this. I am devising an experiment to measure changes in sea water salinity in river estuaries due to tidal flow. Sea water has a standard resistance of approximately 0.2ohm.m. My samples will need to be considerably smaller than 1m^3, I was thinking...

Thank you. I'll take a look

Hi Just a brief intro/bio. Aged 68.5yo but mentally still a (responsible) teenager - that may be an oxymoron.. Interests: Astronomy, Cosmology, Spectroscopy, solar dynamics and anything Physics and maths related. Beyond that, add any other form of science and for more fun, I design, build...