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  1. Dictionary
    concave
    /ˈkɒnkeɪv/

    adjective

    • 1. having an outline or surface that curves inwards like the interior of a circle or sphere: "concave lenses"

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  3. link.springer.com › referenceworkentry › 10Pipeline Mechanical Calculations | SpringerLink

    2 hours ago · Vertical curved sections (concave upwards – sag bend): the pressure exerted by the bend over the bottom of the trench; the same calculated for the straight sections, as above mentioned. Vertical curved sections (concave downwards – over bend): the weight of the cover soil that balances the upward resultant force acting on the bend; the same calculated for the straight sections, as above mentioned.

  4. en.wikipedia.org › wiki › Diffraction_gratingDiffraction grating - Wikipedia

    1 day ago · Diffraction grating. In optics, a diffraction grating is an optical grating with a periodic structure that diffracts light, or another type of electromagnetic radiation, into several beams traveling in different directions (i.e., different diffraction angles). The emerging coloration is a form of structural coloration.

  5. en.sorumatik.co › t › define-1-dioptre-of-power-ofDefine 1 dioptre of power of lens - General - Sorumatik

    1 day ago · The unit of lens power is the dioptre (D), which is commonly used in the field of optometry and ophthalmology. Definition of 1 Dioptre: 1 dioptre is defined as the power of a lens that has a focal length of 1 meter. The formula for calculating the power of a lens. Power (P) in dioptres is given by the inverse of the focal length (f) in meters.

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    1 day ago · e sacral 30. a. The cervical vertebra that does not have a body or a spinous process is the b. The cervical vertebra that does not have a bifid spinous process is c. The dons (odontoid process) is a component of this cervical vertebra 31. a. Does the...

  8. www.questionai.ph › questions-te1gSYMZns › physicalphysical education test i. identification __ 1. what ...

    2 hours ago · B - If the first statement is incorrect , and the second statement is correct. C - If both statements ; are correct. D - If both statements are incorrect. (1) The domain of a rational function is a set of numbers that can define the function. (2) The restricted domain value can define the denomina tor of a rational function. C A D B

  9. www.laitimes.com › en › articleis so thin that the skeleton can be seen, and Ning Yizhuo's ...

    1 day ago · The figure sparked heated discussions, black entries or likes? Loading... Ning Yizhuo's figure has recently sparked heated discussions on social media. Some netizens praised her for being thin and "material"...

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    1 day ago · After Huang Zitao and Xu Yiyang officially announced their relationship, it was not very hurtful, and it was this hot search that was extremely insulting - Huang Zitao posted on Weibo more than 50 times in one minute that day, although he failed to officially announce his relationship like his former teammates...