Nicola Tesla was born in Croatia and attended primary and technical schools in Croatia until he was drawn further afield to find people that matched his intellect.
In Zagreb alone there are streets named after him, bronze sculptures and a museum acknowledging his contributions to shedding the light.
Zagrebs Nicola Tesla Technical Museum is a beauty. As well as having a large area devoted to him there are some wonderful collections of aeroplanes, boats and trains, to name a few.
The rate of rotation of a Foucault pendulum can be stated mathematically as equal to the rate of rotation of the Earth times the sine of the number of degrees of latitude. Because the Earth rotates once a sidereal day, or 360° approximately every 24 hours, its rate of rotation may be expressed as 15° per hour, which corresponds to the rate of rotation of a Foucault pendulum at the North or South Pole. At latitude 30° N—for example, at Cairo or New Orleans—a Foucault pendulum would rotate at the rate of 7.5° per hour, for the sine of 30° is equal to one-half. The rate of rotation of a Foucault pendulum at any given point is, in fact, numerically equal to the component of the Earth’s rate of rotation perpendicular to the Earth’s surface at that point.