Using Tracker to find the minimum angle of deviation and the refractive index of a prism

Abstract

The target of this study is to determine the minimum angle of deviation of a prism which is one of the optical experiments. Thus, the aim is to state the refractive index of a prism. In this context, the Tracker program, which might also be utilized in terms of distance education purposes, was preferred. The videos of the experiments were recorded with the help of a smartphone. The study showed that the refractive indexes of the prisms which were made of glass and acrylic with different apex angles could be determined with a high level of accuracy as a result of the analysis of videos which were recorded with two different methods. It is believed that the study provides insights for both the conduction of laboratory courses via distance education and for performing experiments for students who do not have access to proper laboratory equipment.

A Minireview of Microfluidic Scaffold Materials in Tissue Engineering

“… For reference, we consider a material to be: “Optically Transpartent”, if its RI is between that of water (1.33) and of glass (1.52) ( Bashkatov and Genina, 2003 ; Ürek et al, 2021 ); “Flexible”, if its elastic modulus is within the PDMS range of 1.32–2.97 MPa ( Johnston et al, 2014 ); “Stretchable”, if its “Elongation at Break” is greater than that of PDMS (which corresponds to a value of 40%) ( Johnston et al, 2014 ). Lastly, if a material has a degradation half-life of at least 6 weeks, it is considered to be able to support long-term tissue growth.…”

“…Although, methods that don’t require crosslinking (e.g., micro-extrusion 3D printing) could be used instead, the light-based ones tend to yield the highest resolution (which is desired for the microfluidic scaffolds capable of precise cell and fluid manipulation in situ ( Tong et al, 2021 )). Lastly, another consideration is the refractive index (RI) of the material, which for optical microscopy should ideally be in between that of water = 1.33 and of glass = 1.52 ( Bashkatov and Genina, 2003 ; Ürek et al, 2021 ). Although not a hard requirement, it would reduce the light aberrations experienced by water-dipping objectives commonly used by the popular 3D long term fluorescence imaging methods (e.g., Lattice Light Sheet Microscopy).…”

Investigation of the dispersion of light in prisms via RayLab

“…Here, δ indicates the angle of deviation. It shows the amount of deviation that occurs in the direction of the ray coming to the prism as it leaves the prism [21].…”

“…Also, he stated that each colour that makes up white light has a specific angle of deviation and the colours can be recombined to form the original white light [20]. Some of the studies in the literature that contain activities related to optics teaching are about prisms [21][22][23]. In one of these studies [23], it was explained with an experiment that the representation in which the light is converted back to white light with two prisms in many books is not correct.…”

Implementation of a Tracker-Assisted Modeling Activity in an Online Advanced Physics Experiment Course

“…This feature helps to generate a light intensity distribution graph in light diffraction, interference, or polarization experiments. Various papers have described how to use Tracker for modeling and understanding physics topics in high school and undergraduate courses, including harmonic motion (Kinchin, 2016) free fall (Wee, Tan, & Leong, 2015) projectile motion (Wee, Chew, Goh, Tan, & Lee, 2012) rotational dynamic (Eadkhong, Rajsadorn, Jannual, & Danworaphong, 2012) electricity and magnetism (Aguilar-Marin, Chaves-Bacilio, & Jáuregui-Rosas, 2018) refraction (Ürek, Özdemir, & Coramik, 2021) and reflection (Rodrigues. & Carvalho, 2014).…”