Sentences with phrase «magnetic activity then»
But these rocks are difficult to analyse because they were re-heated around 2.6 billion years ago, which left a record of magnetic activity then that partially overlaid older evidence.
https://www.scientificamerican.com/ Not exact matches
In their study, subjects underwent 40 seconds of disruptive transcranial magnetic stimulation (TMS)-- in which a magnetic coil placed near the skull produced small electric currents in the brain that inhibited activity of the posterior TPJ — then spent 30 minutes completing a task.
Bristow then used a functional magnetic resonance imaging scanner, or fMRI, to monitor any brain activity triggered by blinking, independent of the effect of eyelid closure on light entering the eye.
As the subjects thought of a story in their native tongue and then in a second language, the researchers used magnetic resonance imaging (MRI) to monitor brain activity.
Every 11 years or so, the sun's magnetic activity peaks and then troughs, resulting in relatively high and then low numbers of dark spots and flares on the solar surface.
Then, at Harvard, he conducted experiments using functional magnetic resonance imaging (fMRI) to search for hard evidence of psi activity in the brain.
The researchers then used functional magnetic resonance imaging to measure brain activity in each of the participants.
They had people drink cherry - flavored water sweetened with either fructose or glucose, and then they monitored the subjects» brain activity inside a functional magnetic resonance imaging (fMRI) machine while presenting them with pictures of food.
Their brain activity was then compared using functional magnetic resonance imaging (fMRI), a technology that measures neural firing through changes in blood flow.
The number of sunspots varies as solar magnetic activity does — the change in this number, from a minimum of none to a maximum of roughly 250 sunspots or clusters of sunspots and then back to a minimum, is known as the solar cycle, and averages about 11 years long.
Recent experimental work at CERN supports an hypothesis that solar magnetic activity throttles formation of cloud water droplet condensation sites and this then explains the correlation between solar magnetic minima with cold epochs.
High solar activity means a stronger heliospheric magnetic field and thus a more efficient screen against GCR, then under the hypothesis underlined above, the reduced GCR flux would promote less clouds amplifying the warming effect expected from high solar activity.