The phrase "external manifestation" is correct and usable in written English.
It can be used to describe a visible or observable expression of something that originates from outside.
Example: "The external manifestation of her emotions was evident in her body language and facial expressions."
Alternatives: "outward expression" or "visible representation."
"Flying is the external manifestation of what he cannot achieve: mature sexuality".
This was the external manifestation of the internal rejection of what was white or colonised within me.
We fear our appearance changing when we have cancer – the external manifestation of this insidious, interior disease.
In essence, timing constitutes the external manifestation of the causal relation between the relevant hardware activities.
The novel gets you inside Christopher's head, but the stage version does more, giving Christopher's internal response to the world an external manifestation.
The world (or "nature"; see tian), which is the external manifestation of the Dao, is spontaneous (ziran).
Through computational methodologies it seeks to describe and analyse these structured environments which have both internal and external manifestations.
We used principal component analysis to identify dominant patterns of radial growth in eleven Nothofagus pumilio stands in northern Patagonia that show external manifestations of forest dieback.
Signs denote, they tell us how to get from A to B; symbols connote -they are external manifestations of energies within us that connect us to, or alienate us from, ourselves and our world.
It's not a great novel by any stretch, but if it sets out to show you how evil people can be – and how thin the line between internal and external manifestations of pain can be – Rage succeeds on pretty much all counts.
The intention behind I AM is no less than to identify the sources of and solutions to human suffering, asking a range of thinkers if there's an underlying root to our problems that goes beyond external manifestations of poverty, environmental destruction, war and materialism.
