Some sources (including the current Tag-info at biology SE) state; biophysics is the adoption of techniques / methodologies from physics to study biological systems.
The use of methods from the physical sciences to aid in the study of biological systems…
Bio-SE- Tag biophysics.
Biophysics or biological physics is an interdisciplinary science that applies the approaches and methods of physics to study biological systems…
Biophysics — the branch of biology that applies the methods of physics to the study of biological structures and processes…
According to other sources, biophysics is the subject concerned with how the laws or phenomena of physics work in living systems.
“The subject of biophysics are the physical principles underlying all process of living systems.”
Biophysics is a bridge between biology and physics. ... Biophysics looks for principles that describe patterns. If the principles are powerful, they make detailed predictions that can be tested. ---
These two, although apparently quite similar (and I agree, have overlapping areas) basically indicate completely different things.
The first group of definitions refer to techniques and methodologies; such as “how does an electron microscope work?”, or “what could be the best strategy to separate membrane-lipids?”, or “how could you identify cells with the expression of certain RNA”; etc.
The second group refers to the physical principles applicable to living systems. Such as “why do phospholipids form a bilayer?” or “how do brain waves reach the scalp?” or “how does a humming bird move its wings when it hovers in a stationary manner?” or “what are the mechanisms working in the path of transport through phloem?”.
Now my question is: Is there a dual and different meaning, or use of the term ‘biophysics’?