Questions

Benjamin Franklin has long been credited with the invention of bifocal lenses and he was the first to wear bifocal lenses. He did not produce them himself but instead had some optician in London or France make them for him to overcome Presbyopia, a condition that Franklin suffered. He was tired switching between lenses for far and near sightedness. And that resulted in inventing Bifocal Lenses.

Green land is the largest of all the Islands.It is a part of North America

The World Thalassaemia Day (WTD) is observed every year on May 8 to spread awareness about this deadly disease and the importance of blood donation and how it helps the millions of people suffering from Thalassemia worldwide. Thalassemia is genetic blood disorders characterised by reduction in the synthesis or absence of haemoglobin in the body. According to a WHO report, more than 90% patients with thalassaemia in western countries lead a normal life, whereas in India, roughly half of all patients die before reaching adulthood. Approx 3.9% of India’s population is a carrier for thalassemia. The 2017 theme ‘Together for Humanity’ highlights the need for unity and the efforts that are required to fight this fatal disease.

The time taken for the earth and the solar system to complete one journey round the Milky Way.