The phrase "as to the magnitude of" is correct and usable in written English.
It can be used when discussing the size, extent, or importance of something, often in a formal or academic context.
Example: "The researchers conducted a thorough analysis as to the magnitude of the impact of climate change on local ecosystems."
Alternatives: "regarding the extent of" or "concerning the size of".
We discuss the scale-up of emulsion production, giving consideration to the length of time the shear stress is applied as well as to the magnitude of the shear stress.
The honeymoon is soon over for new manager Fergie as he loses his first match: Bob Houston is at the Manor Ground for Manchester United's 2-0 defeat by Oxford United Such is Manchester United's plight that when Alex Ferguson chose to leave behind the Northern Lights of Old Aberdeen for the flickering flame of Old Trafford he was certainly under no illusions as to the magnitude of the task on hand.
Also in that announcement, they did not make any claims as to the magnitude of the potential restatements.
The winner of of Saturday's clash will move into a strong position at the top of Pool A, and Launchbury says the England players are under no illusions as to the magnitude of the match.
During a personal survey, it was observed that taking a journey in the morning, after a full breakfast and ready to start the day, there was little thought as to the magnitude of vibrations felt in the train vehicle.
If there were ever any doubt as to the magnitude of the dumbing down of our society, one need only look at the case of CNN.
Resonances in the apparent mass and transmissibility to the spine and pelvis in the fore-and-aft and vertical directions, and pitch transmissibility to the pelvis, shifted to lower frequencies as the magnitude of vertical excitation increased and as the magnitude of the additional fore-and-aft excitation increased.
These tests can tell us whether the treatment has an effect, but they are silent as to the magnitude and variability of the effect.
There is uncertainty as to the magnitude and persistence of retrograde amnesia following ECT [ 12], though a systematic review suggested that 29 55 % of patients reported persistent and often distressing loss of important past memories after ECT [ 13].
Except at incipient aeration, the radial dispersion coefficient was not as sensitive to the magnitude of the aeration rate as was the axial dispersion coefficient.
All the surveys are aimed at measuring the breadth of employment plans, as opposed to the magnitude of such plans.
