The Cafe Procope was established in Paris in 1686; by the 1720s there were around 400 cafes in the city. The Cafe Procope in particular became a center of Enlightenment, welcoming such celebrities as Voltaire and Rousseau. The Cafe Procope was where Diderot and D'Alembert decided to create the Encyclopedie. The cafes were one of the various "nerve centers" for bruits publics, public noise or rumour. These bruits were allegedly a much better source of information than were the actual newspapers available at the time.
In which Cafe was the Encyclopedie created?
The Cafe Procope

Glass has the ability to refract, reflect, and transmit light following geometrical optics, without scattering it. It is used in the manufacture of lenses and windows. Common glass has a refraction index around 1.5. This may be modified by adding low-density materials such as boron, which lowers the index of refraction (see crown glass), or increased (to as much as 1.8) with high-density materials such as (classically) lead oxide (see flint glass and lead glass), or in modern uses, less toxic oxides of zirconium, titanium, or barium. These high-index glasses (inaccurately known as "crystal" when used in glass vessels) cause more chromatic dispersion of light, and are prized for their diamond-like optical properties.
What is the refraction index of typical glass?
1.5

New Delhi is a cosmopolitan city due to the multi-ethnic and multi-cultural presence of the vast Indian bureaucracy and political system. The city's capital status has amplified the importance of national events and holidays. National events such as Republic Day, Independence Day and Gandhi Jayanti (Gandhi's birthday) are celebrated with great enthusiasm in New Delhi and the rest of India. On India's Independence Day (15 August) the Prime Minister of India addresses the nation from the Red Fort. Most Delhiites celebrate the day by flying kites, which are considered a symbol of freedom. The Republic Day Parade is a large cultural and military parade showcasing India's cultural diversity and military might.
On Indian Independence Day, the Prime Minister addresses the nation from what location?
the Red Fort