Virtual voice clinics in the COVID-19 era: have they been helpful?

Designing, implementing, and evaluating an introductory course on virtual learning in the Covid-19 pandemic era

Background & Objective: The sudden outbreak of Covid-19 affected the educational systems worldwide and highlighted the necessity of students' virtual education. Therefore, the present study aimed to compile, implement, and evaluate an introductory course on virtual learning for medical students. Materials & Methods: The present scholarly research was conducted in four stages: 1) needs assessme...

Stars ’ - Have They Been Discovered ?

Recently there is a suggestion about the star RXJ1856.5−3754, being a possible candidate for quark star. While from the estimates of the radiation radius, given by the authors, it does not seem to fit with any of the known models for such stars, the mass radius diagram admits the possibility of this being a quark star of mass M ⊙ < M < 1.4M ⊙ , provided the radius mentioned is the actual radius...

Echocardiography education in COVID-19 era

Strange Stars ’ - have they been discovered ?

Recently there have been controversial claims about the nature of the isolated compact star RXJ1856.5−3754, with one group claiming it to be a strange star (Drake et al., 2002) while the other asserting it to be a normal neutron star (Walter & Lattimer, 2002). The controversy arises mainly due to the distance estimate, which in turn is used to resolve the measured angular diameter, and thus the...

Asking photons where they have been.

We present surprising experimental evidence regarding the past of photons passing through an interferometer. The information about the positions through which the photons pass in the interferometer is retrieved from modulations of the detected signal at the vibration frequencies of mirrors the photons bounce off. From the analysis we conclude that the past of the photons is not represented by c...