Sentences with phrase «very large magnetic fields»

Not exact matches

Now, scientists using the European Southern Observatory's (ESO) Very Large Telescope (VLT) say they may have observed this effect in the light coming from a neutron star — a cosmic object with a very strong magnetic fiVery Large Telescope (VLT) say they may have observed this effect in the light coming from a neutron star — a cosmic object with a very strong magnetic fivery strong magnetic field.

The discovery, reported in tomorrow's issue of Nature, relies on a phenomenon called colossal magnetoresistance — a large drop in a material's electrical resistance in response to an applied magnetic field — that has previously been seen only at very low temperatures.

«And it is also possible that the region may actually be a trigger for magnetic pole reversals, which might happen if the weak field region becomes very large.»

Wüthrich found a way to determine the precise shape of a very large biomolecule by studying how its hydrogen nuclei wobble when exposed to carefully tuned magnetic fields — a phenomenon known as nuclear magnetic resonance, or NMR.

Firstly, as the magnetic field does not allow very large molecular clouds to collapse and form stars, star formation can occur only after the clouds break up into smaller clouds.

They combined observations in the visible and the near infrared from the Hubble Space Telescope with radio observations from the Very Large Array and the Submillimeter Array to explore the effect of the turbulence, stellar radiation, and magnetic field on massive star formation in the galaxy's nuclear ring.

Although it is well established that the Sun's magnetic field is responsible for the supply of energy to the atmosphere, exactly how this magnetic energy is converted into thermal energy is still not understood in detail, as models struggle to simultaneously encompass the very disparate temporal and spatial scales on which the heating has to occur, in different structures, with a wide variety of characteristics (e.g. open versus closed structures, short quiet - sun loops versus hot active - region loops and large - scale interconnecting loops).

Large changes in cosmic rays are documented in response to magnetic - field variations (the Laschamp event of about 40,000 years ago is especially prominent) with no corresponding change in climate, so any cosmic - ray influence on the climate must be very small (a weak correlation can be obscured by noise; a strong control is almost always visible «by eye,» and clearly is absent).

Even a very large such disturbance is only about 1 % of the Earth's own magnetic field and is of short duration [hours] and rare.