The First Vertical Jet Flies
April 11, 1957
The Ryan X-13 Vertijet makes its first vertical take off and landing, marking the first time a jet-powered aircraft successfully completed a VTOL flight. Militaries around the world at the time were experimenting with the concept of VTOL as a way of having aircraft that could take off and land from areas with no runway. While the X-13 was tested successfully, the program was cancelled after only two years. The X-13 concept proved unfeasible for the United States military due to a variety of issues, including payload and range capabilities.
ENIAC Project Started
April 10, 1943
Researchers at the University of Pennsylvania begin work on the Electronic Numerical Integrator and Computer (ENIAC), which when completed, will become the first general-purpose fully electronic computer, capable of making calculations one thousand times faster than any other prior computer. The work will be carried out in secret since the computer is intended for military purposes, though it won’t actually be completed until after World War II ended. ENIAC will be unveiled to the public in February 1946.
Apple Passes $500 Billion Valuation
February 29, 2012
The stock value of Apple, Inc. surpasses $500 billion, setting a new record for the company which was already the world’s most valuable company at the time. This day marks a milestone on the historic run for the company from near-bankruptcy in the 1990’s to one of the most, if not the most, dominant technology company in recent history. Apple would later become the first company in history to surpass $700 billion in value in February 2015.
Tokyo Skytree Completed
February 29, 2012
Construction of the Tokyo Skytree broadcast tower, delayed two months due to the 2011 Japan earthquake and tsunami, is completed on leap day – February 29th, 2012. The Tokyo Skytree is the tallest structure in Japan and the world’s tallest tower.