The phrase "a normal incidence of" is correct and usable in written English.
It is typically used in scientific or technical contexts to refer to the angle at which a wave, such as light or sound, strikes a surface.
Example: "The experiment was conducted under a normal incidence of light to ensure accurate measurements of reflection."
Alternatives: "a standard angle of incidence" or "a typical incidence of".
Fig. 3. Displacement discontinuity along an isolated crack due to a normal incidence of harmonic P or SV waves: (a) normal displacement discontinuity due to P waves, and (b) shear displacement discontinuity due to SV waves.
The associated forward scattering into air is measured and compared with that of NRA under a normal incidence of a laser beam with a wavelength of 632.8 nm upon the air/NRA/glass system.
Additionally, a 50% reduction of mucositis in the PTA group was determined as clinically relevant with a normal incidence of mucositis of 80%.
Figure 4 shows the typical FTIR spectra of a SiN x film with a low refractive index of 2.1 (SiN1.12) which were recorded with a normal incidence and with an incidence angle of 65°.
The chemical composition of the films was determined by Rutherford backscattering spectrometry (RBS) using a 1.5-MeV 4He+ ion beam with a normal incidence and a scattering angle of 165°.
The films were deposited by the N2-reactive method recorded with a normal incidence and with an incidence angle of 65°.
A 10 μm diameter particle decelerating in the Earth's atmosphere during a normal incidence entry experiences a peak pressure of ~10 N/m2 (Brownlee, 1985), but much larger CP IDPs survive atmospheric entry intact only to break up on impact collection.
An ~100 μm particle decelerating in the Earth's atmosphere during a normal incidence entry experiences a peak pressure of ~100 N/m2 (Brownlee, 1985), establishing that the largest cluster IDPs must survive dynamic pressures up to ~100 N/m2.
(A) Reflectance at normal incidence of the optical radiation onto a TiO2 film placed between two dielectric media (2 mm plate of fused silica and air or AlOOH layer) as a function of wavelength.
First Nations communities downstream of tar sands operations have suffered a higher than normal incidence of rare and deadly cancers.
6 7 Patients who have undergone joint replacements have a higher than normal incidence of DNA damage to blood lymphocytes.
