@aliamjadrizvi You need to know the distance to the sun for this to be correct, because if not there is another explanation: If the sun is at about 400km height and the earth is flat, then both sticks will cast different shadows.
To do the trick without knowing the sun distance you need THREE.
Since June 21st 2011 anyone who followed @PeterSchiff's advice to go dinosaur by dropping bitcoin and buying gold has not only missed a 57,000% gain in the price of bitcoin, but suffered a 5% loss in the price of gold.
For reference: https://t.co/kzPiOkyePN
@kulch Unironically, the wheel was barely used, with the exception of the Horn of Africa, in Sub-Saharan Africa well into the 19th century but this changed with the arrival of the Europeans. What caused them to be unable to develop the Wheel until we arrived?๐ค Apartheid?๐