Year XXIX, Issue 5, 2020<<Archive>>
In this issue:
From thе Rеsеаrch Lаborаtoriеs
STUDIES ON THE NUCLEATION AND GROWTH OF CRYSTALS
Crystallization is occurring frequently in nature (and already in the antiquity has been used for production of cooking salt). As science and technology developed the crystallization to the current status, it has become one of the basic processes in a number...
ON THE STRUCTURE AND EVOLUTION OF TWO-DIMENSIONAL SOAP FOAM, ENCLOSED BETWEEN GLASS SHEETS
Liquid foams are objects of great practical significance - they appear in firefighting mixtures, soaps, alcoholic drinks, etc. However, our knowledge about them is extremely limited due to their complexity. This investigation, based on the first problem...
soap foam; structure; evolution; experimental investigation; IYNT
APPLIED SAMPLING METHODOLOGY AND ANALYSIS OF NONLINEAR ACOUSTIC PROPERTIES IN SOLIDS OF REVOLUTION
The main focus of this work is the research of the resulting sound caused by a constant airflow through the open end of a bottle by varying the relevant parameters. For a more in depth analysis, additional experiments with test tubes are carried out. The st...
acoustic feedback system; airflow system; solid of revolution; resonance; Helmholtz resonance; standing wave
MEASURING THE COLLISION TIME OF A BALL WITH HIGH COEFFICIENT OF RESTITUTION
The purpose of this paper is to measure the collision time of a ball with a high coefficient of restitution (SuperBall) with a hard surface. The manuscript discusses the theoretical model of the collision and approximations used; the direct methods for measuri...
collision; coefficient of restitution; time; theoretical model; surface
Nеw Approаchеs
MULTIPLE PERSPECTIVES ON ACADEMIC LABORATORY SAFETY COURSE IN COLLEGE SCIENCE EDUCATION
There has been comparable neglect of safety aspects and impacts in science and engineering curriculum design and development. It should become an integral part of the higher science education ecosystem. The academic scenario will be much greener if laboratory...
academic laboratory safety; curriculum design; lab accidents; loss prevention; safety culture
DEVELOPMENT OF THE COGNITIVE INTEREST IN PHYSICS AND ASTRONOMY THROUGH NON-FORMAL EDUCATION
The text presents the experience gained in non-formal education in physics and astronomy – organizing and conducting educational activities with students attending the Municipal Center for Extracurricular Activities – “green schools”, summer camps. Shown is th...
non-formal education; extracurricular activities; cognitive interest