The phrase "a simple apparatus that" is correct and usable in written English.
You can use it when describing a device or tool that is straightforward in design or function.
Example: "The project involves creating a simple apparatus that can measure temperature accurately."
Alternatives: "an uncomplicated device that" or "a basic instrument that".
The process has been tested in Dr. Kubic's garage, in a simple apparatus that looks like mutant Tupperware.
Musser takes us into the lab of the Colgate professor Enrique Galvez, who has constructed a simple apparatus that allows him to entangle photons and then show that "the photons are behaving like a pair of magic coins. . .
Musser takes us into the lab of the Colgate professor Enrique Galvez, who has constructed a simple apparatus that allows him to entangle photons and then show that "the photons are behaving like a pair of magic coins.
We report the design of a simple apparatus that meets these requirements and implements an inertial-impaction mechanism established in aerosol science.
Mach devised a simple apparatus that demonstrated that the Doppler effect was real, at least for sound.
A simple apparatus that you wear around your wrist, holding your phone in place via good old fashioned Velcro – Velcro making all cell phone accessories "universal" by default.
The experimental results by a simple apparatus indicate that the parametric resonance is stabilized by the effects of both vibration absorber and Coulomb friction of the main system.
These results show that by following the rules discussed above, films with optimal optical performance can be obtained even with a simple apparatus.
"It was a simple apparatus, but enough to produce deaths," said Norberto Oyarbide, the federal judge investigating the case.
A simple apparatus designed and constructed in our lab was used to conduct the experiments.
