tangible proof

See: fact
References in classic literature ?
Poirot might have excellent reasons for his belief in Inglethorp's innocence, but a man of the type of Summerhaye would require tangible proofs, and these I doubted if Poirot could supply.
Then, the paleness of her face - its haggard aspect having vanished as she recovered flesh - and the peculiar expression arising from her mental state, though painfully suggestive of their causes, added to the touching interest which she awakened; and - invariably to me, I know, and to any person who saw her, I should think - refuted more tangible proofs of convalescence, and stamped her as one doomed to decay.
Summary: 'Al Houthis' comments threatening the UAE and its capital are tangible proof of the need for the Decisive Storm (operation),' UAE minister said
1) Although consistently denied by National Aeronautics and Space Administration (Nasa) and mainstream anthropologists, archaeologists and Western government agencies, there are numerous unofficial reports and testimonies of ancient aliens or extraterrestrial beings having visited our world, leaving tangible proof of their visits scattered all over the planet.
While the funding support allowed us to take a product from an idea to a tangible proof of concept, its been the auxiliary support that has opened doors and allowed us to get the product in front of a customer base which would have ordinarily been very difficult to access.
Both horses have been undergoing trainings under the supervision of HH Shaikh Nasser bin Hamad Al Khalifa, and this a tangible proof of HH's vast capabilities as he is an exceptional jockey having earned many great achievements for the Kingdom of Bahrain in different stages in addition to his abilities in the horse training field.
NNA - Member of Parliament, Shant Janjanian, on Friday ruled out any tangible proof that the lengthily awaited Lebanese presidential election will be held anytime soon; however, he expressed hope that a president will be swiftly elected to rid the nation from looming threats of full constitutional disruption.
It is a significant, tangible proof point of the collaboration we will facilitate and enable through our Home of Innovation initiative.
While Eliademy already offers students free online certificates, this new functionality aims at providing them with a more tangible proof of their accomplishment.
Opening the session, HPR Speaker Mohamed Ennaceur estimated that the presence of international dignitaries in the march against terrorism staged, Sunday, following the terrorist attack against the BardoMuseum is a tangible proof of solidarity with Tunisia in countering terrorism.
However, the verification team at Riken has been unable to find any tangible proof of the existence of STAP cells and the possibility of creating them with any success.
Our communities consistently tell us that this problem is something they are really worried about and the results of the operation so far are tangible proof that we are listening and we are determined to make the roads of Merseyside a safer place for all.