Hmm, when I tried to sign up I got a message that I was already on the waiting list.
EDIT: It looks like the page is making a request to cardiio.com, specifically, and if you’re at www.cardiio.com (the one you linked to) the response gets blocked by Same Origin Policy, and the page treats it the same as a you’re-already-on-the-list response. You might want to avoid hardcoding the hostname in the JS, and/or force everyone over to the www or non-www domain.
From what I recall, you can measure the level of photosynthetic activity in an area given the reflectivity of the land (and, I would think, some basic model of what type of vegetation is present in the area)
One example from his research: the fall of the Soviet Union had a statistically significant impact on weather patterns in Kazakhstan (the breadbasket of the USSR) because the land usage changed so much with agricultural policies before and after the fall.
Quick link to the research overview page: http://globalmonitoring.sdstate.edu/research.php
[1] famous illustration from the enlightenment: http://www.lehrer.uni-karlsruhe.de/~za874/homepage/aufklaeru...
But from a scientific point of view, you don't really need spatial resolution for the heartbeat example, though, do you? If you just spent the same amount of money on getting high temporal and spectral resolution, surely one could do very cool things with 'just one pixel', so to speak. Especially if you had say 16 different wavelengths, instead of just 3.
But in the real world scenarios you want to take a look at more than one pixel, and use the rest of the picture for noise reduction & calibration.
That is for heartbeat. But yes, with better spectral resolution you might get some other cool data.
https://play.google.com/store/apps/details?id=com.macropinch...