Gratings often cover drainpipes to prevent debris, leaves, and other debris from clogging the drainage system, which can lead to water buildup and potential flooding. Additionally, they provide safety by preventing people or animals from accidentally falling into open drains. Gratings also help maintain proper airflow and drainage efficiency while allowing rainwater to flow through easily.
they are placed on roadsides and they float there
I don'know came on this f*king app to find the answer 🙄😌
Diffraction gratings can be categorized into 2 types - reflection gratings and transmission gratings. So, transmission gratings are a subset of diffraction gratings. Kristian Buchwald, Ibsen Photonics
There are typically two main types of diffraction gratings: transmission gratings, which allow light to pass through the grating material, and reflection gratings, where light is reflected off the surface of the grating. Both types can be further categorized based on the method used to create the grating, such as holographic, ruled, or blazed gratings.
sand (sometimes shells)
scales or sometimes denticles
Because ino is acid wich is not needed
scales or sometimes denticles
Sometimes that's the case. Like "Knockin' on heaven's door", where many covers are famous.
Amy I. Woods has written: 'Work on diffraction gratings'
Suggest a suitable polymer and the likely manufacturing process for each of the following and give reasons for your choice:rainwater gutters and drainpipes,a domestic vacuum cleaner body,a 13 A electrical socket,a domestic washing-up bowl, andlenses for vehicle rear lights.
The initial franchise fee covers various things for various franchises. Sometimes the fee covers initial marketing efforts and sometimes it just allows you to brand your business.