Testing Machine

The eye-bars, when made, are tested in a testing-machine at double the strain which by any possibility they can be put to in the bridge itself. ❋ Various (N/A)

As an illustration of the deceptive power of alcohol upon people under its influence, it is said that persons experimented upon were under the impression, after the drink, that they could do more work, and do it more easily, although the testing-machine showed exactly the contrary to be true. ❋ Martha Meir Allen (1890)

V squared for the wind pressure at 90 degrees is probably too great by at least 20 per cent; (3) that Lilienthal's estimate that the pressure on a curved surface having an angle of incidence of 3 degrees equals. 545 of the pressure at go degrees is too large, being nearly 50 per cent greater than very recent experiments of our own with a pressure testing-machine indicate; (4) that the superposition of the surfaces somewhat reduced the lift per square foot, as compared with a single surface of equal area. ❋ Evelyn Charles Vivian (1914)