The phrase "as tangible evidence" is correct and usable in written English.
It can be used when referring to physical proof or concrete examples that support a claim or argument.
Example: "The scientist presented the results of the experiment as tangible evidence of the theory's validity."
Alternatives: "as concrete proof" or "as physical evidence."
Using my Nike+ Fuelband, I tracked my Bestival activity and recorded its findings as tangible evidence of a decent workout.
Moreover, the shoeshiner might decide to add a receipt or a sample of shoepolish as tangible evidence of good care.
Mr. Yeltsin described the accord as tangible evidence of the "partnership and friendship" between Washington and Moscow.
"We now enjoy considerable momentum, as we enter 2015," said Campbell, citing higher life expectancy, education and more women in the workforce as tangible evidence of Nato's contribution.
The Japanese brought with them a copy of Commodore Perry's treaty as tangible evidence of the spiritual union between the two nations.
He hailed the budget announcement as "tangible evidence of the government's determination to position Hong Kong well in a very competitive landscape".
But the dust in the air was not as disconcerting as other, less tangible evidence of the wreckage just south of their homes.
The site 'Tarrungi' is one of a number of stone arrangements in this area, which we interpret as the tangible evidence of ritual exchange within a regional cosmo-political landscape.
Yet the over-all effect is as taut with tangible evidence as a detective story.
The former Northern Ireland peace broker's mission – which he described today as "clear and tangible evidence" of Obama's commitment to the Middle East – comes with tensions in Gaza as high as they have been since the end of the Israeli attack on the territory, in which about 1,300 Palestinians died.
That's big news, as it's tangible evidence that youth oriented online social networking is a market driver of serious proportions.
