- Isosceles triangle (Wikipedia)
In geometry, an isosceles triangle (/aɪˈsɒsəliːz/) is a triangle that has two sides of equal length. Sometimes it is specified as having exactly two sides of equal length, and sometimes as having at least two sides of equal length, the latter version thus including the equilateral triangle as a special case. Examples of isosceles triangles include the isosceles right triangle, the golden triangle, and the faces of bipyramids and certain Catalan solids.
- Captain Midnight broadcast signal intrusion (Wikipedia)
On April 27, 1986, American electrical engineer and business owner John R. MacDougall (using the pseudonym “Captain Midnight”) jammed the Home Box Office (HBO) satellite signal on Galaxy 1 during a showing of the film The Falcon and the Snowman. The message, broadcast for four and a half minutes, was seen by the eastern half of the United States (accounting for more than half of HBO’s 14.6 million subscribers at the time) protesting HBO’s rates for satellite dish owners, which he considered too expensive. MacDougall was working at his second job as an operations engineer at the Central Florida Teleport uplink station in Ocala, Florida, and vied with a technician at HBO’s communications center in Hauppauge, New York, for control of the transmission. The technician attempted to increase uplink power but gave up because of the risk of damaging the satellite. MacDougall eventually abandoned his control of the satellite.