Science Current Affairs - 2020
The International Cricket Council (ICC) is considering to legalize ball tampering.
Context of the News
The ICC is considering to use an artificial substance under the supervision of umpires to polish cricket balls as applying saliva risks the spread of COVID-19. The use of artificial substance has been banned in cricket.
What is ball tampering?
Ball Tampering is an action in which the player of the fielding team in cricket illegally alters the condition of the ball. It is done to achieve favourable bowling conditions against the batsman. Using sweat or spit to remove the mud or to polish the ball is common and is allowed.
Why is sweat or spit used?
The sweat or spit is used to make the ball look shiny. The technique is used by the bowlers after the ball gets older, mostly after 35 overs. The sweat or spit is used to make one side shiny and the other side rough.
Physics behind using sweat or spit
The swing of the ball depends on three factors namely climatic conditions, shiny side and behaviour of the pitch. The science of shiny side is applied in using sweat or spit.
The cricket ball creates turbulence as its swings. In conventional swing, ball moves towards the side of greater turbulence. On the other hand, during reverse swing, it goes other way. Therefore, the bowler polishes one side of the ball to make it reverse swing. This is done to create challenging conditions for the batsman.
Under subsection 3 of the Laws of Cricket the ball shall be polished without use of artificial substances. It can be dried with towel to remove the mud in the ball.
Tags: Basic Science • Cricket • ICC • International Cricket Council (ICC) • Science
The International Day of Women and Girls in Science is being observed by the United Nations on February 11 every year since 2015. The Organization passed a resolution to observe the day in order to recognize the role played by girls and women in science and technology.
The day is being celebrated in collaboration with organizations all over the world that work towards promoting women and girls in the field of science.
The events associated with the day is mainly implemented by UNESCO. The global priority of UNESCO is Gender Equality. It supports in providing education and equal opportunities to young girls.
This year the day is celebrated under the theme
Theme: Investment in Women and Girls in Science for Inclusive Green Growth
It is important to observe the day because there are only 30% of women researchers all over the world. Also, their contribution in the field of STEM is also less as compared to men.