In the T-O maps, introduced during the period of Christian Europe, the stem of the 'T' represented ______.
Understanding T-O Maps from Christian Europe
T-O maps, also known as Isidorian maps, were a type of medieval world map commonly found in European manuscripts from the 8th century onwards. These maps represented the world known to medieval European geographers, heavily influenced by classical knowledge and Christian theology.
The name "T-O map" comes from its distinctive shape. The map depicts the known world as a circular shape, representing the 'O' (Orbis Terrarum, meaning circle of lands). Within this circle, a 'T' shape divides the landmass into three continents.
The 'T' Structure and What it Represents
The 'T' is formed by two lines:
- A horizontal line at the top.
- A vertical line extending downwards from the center of the horizontal line.
These lines represent significant bodies of water that were seen as dividing the continents.
Specifically, in the T-O map structure:
- The vertical stem of the 'T' typically represents the Mediterranean Sea, which separates Europe and Africa.
- The horizontal bar of the 'T' represents two bodies of water: the Nile River and the Don River (also known as the Tanais). These rivers were seen as separating Asia from Europe and Africa. The part west of the vertical stem was usually the Mediterranean Sea separating Europe and Africa, and the part east of the vertical stem could represent the Nile or Don River.
The three sections created by the 'T' inside the 'O' represented the three known continents:
- Asia was typically shown in the large upper section (east).
- Europe was in the lower left section (north-west).
- Africa was in the lower right section (south-west).
Jerusalem was often placed at the center of the map, at the intersection of the 'T'.
Therefore, based on the structure and typical representation of T-O maps from the period of Christian Europe, the vertical stem of the 'T' represented the Mediterranean Sea.
Important Questions from Miscellaneous
A stone is thrown horizontally from the top of a 20 m high building with a speed of 12 m/s. It hits the ground at a distance R from the building. Taking g = 10 m/s2 and neglecting air resistance will give :
A sphere of volume V is made of a material with lower density than water. While on Earth, it floats on water with its volume f1V (f1 < 1) submerged. On the other hand, on a spaceship accelerating with acceleration a < g (g is the acceleration due to gravity on Earth) in outer space, its submerged volume in water is f2V. Then:
A railway wagon (open at the top) of mass M1 is moving with speed v1 along a straight track. As a result of rain, after some time it gets partially filled with water so that the mass of the wagon becomes M2 and speed becomes v2. Taking the rain to be falling vertically and the water stationery inside the wagon, the relation between the two speeds v1 and v2 is :
Consider the following statements:
1. Distance between the longitudes becomes zero on North Pole and South Pole.
2. Distance between the longitudes is maximum on the Equator.
3. Number of longitudes is more than number of latitudes.
Which of the statements given above is/are correct?
One block of 2⋅0 kg mass is placed on top of another block of 3⋅0 kg mass. The coefficient of static friction between the two blocks is 0⋅2. The bottom block is pulled with a horizontal force F such that both the blocks move together without slipping. Taking acceleration due to gravity as 10 m/s2, the maximum value of the frictional force is :
