The phrase "ascertain the surface" is correct and usable in written English.
It can be used in contexts where you need to determine or find out information about the surface of an object or area.
Example: "Before proceeding with the construction, we need to ascertain the surface conditions of the site."
Alternatives: "determine the surface" or "identify the surface".
Experimental measurements of dropsize at multiple locations within the spray plume and robust computation of the cumulative surface area of the drops is required to ascertain the liquid surface area availability.
The SEM tests were also performed to ascertain the shape, surface texture and the microstructure bonding of soil grains in soil samples.
Electrochemical methods were also used to ascertain the electrochemical active surface area and the specific activity of the catalyst.
Moreover, to ascertain the suitability of surface and groundwater of the area for various purposes such as municipal, agricultural, industrial or drinking quality, the following parameters were also estimated, shown in Table 3.
The net present value of costs will be divided by the net present value of the number of carious surfaces to ascertain the average cost for carious surface avoided.
Further experiments were then performed using these optimized machining conditions using both uncoated and TiAlN coated micro-tools in order to ascertain the tool wear and surface integrity.
Outoo, sadly, doesn't let you ascertain the verticality of a surface but it might just...lift....your...spirits!
In order to ascertain the immobilization of chitosan onto the surface of minerals, FTIR spectroscopy was employed to characterize initial chitosan, clinoptilolite, saponite, and synthesized composites (Fig. 2).
A thorough chemical characterization of functionalized Ti surface enabled us to ascertain the presence of nitrophenyl or carboxyphenyl groups at titanium surfaces.
