✔ 最佳答案
Manufacture observation tube:
1st, takes down the circular revertex aneroid lid, covers in the aneroid base, causes it guarantees when some crevices (, if is unable maintains crevice aneroid, then cannot use).
2nd, turns on the lid to cover the internal installation to enter some water, returns empty again the lid heavy new clothing the bottom of box department. Reverses aneroid, the inspection has a look to be able the water leakage. (for example meets water leakage, will need readjustment) not the water leakage, only will then use the black adhesive tape the entire aneroid package.
3rd, in the lid and the bottom of box intersection point, shears a pinhole with the boxcutter on the black adhesive tape (1㎝×0.1㎝) like the chart, then the sight namely becomes.
Under sunlight:
1st, will observe the tube to take under the sunlight, causes the sunlight from the pinhole injection.
2nd, looked from the box toward the box, seeks for the light after pinhole way.
3rd, observes the light to enter in the water again the way, whether to have had the deflection.
4th, if has not had the deflection, shifts the angle again, observes several times, may see the light to enter in the water by the air, has the deflection phenomenon.
Scientific principle]
1st, the light in the different material, has the different rate of progression respectively, so long as but in two above different transparent materials goes forward, in its intersection point, as a result of rate of progression's change, will have the winding phenomenon, this kind of phenomenon will be called “the refraction”.
