This Day In History
Thursday, February 25, 2021
On This Day


in 1930

3M begins marketing Scotch...
3M begins marketing Scotch Tape. Scotch Tape is a brand name used for certain pressure sensitive tapes manufactured by 3M as part of the company's Scotch brand. The precursor to the current tapes was developed in the 1930s in Minneapolis, Minnesota by Richard Drew to seal a then-new transparent material known as cellophane.
Scotch Tape, 3M

in 1958

The first successful launch...
The first successful launch of an American satellite into orbit. Explorer 1 was launched on January 31, 1958 at 22:48 Eastern Time (equal to February 1, 03:48 UTC because the time change goes past midnight) atop the first Juno booster from LC-26 at the Cape Canaveral Missile Annex, Florida. It was the first spacecraft to detect the Van Allen radiation belt, returning data until its batteries were exhausted after nearly four months. It remained in orbit until 1970, and has been followed by more than 90 scientific spacecraft in the Explorer series.
Explorer program, space

in 1958

James Van Allen discovers...
James Van Allen discovers the Van Allen radiation belt. The Van Allen radiation belt is a torus of energetic charged particles (plasma) around Earth, which is held in place by Earth's magnetic field. It is believed that most of the particles that form the belts come from solar wind, and other particles by cosmic rays. It is named after its discoverer, James Van Allen, and is located in the inner region of the Earth's magnetosphere. It is split into two distinct belts, with energetic electrons forming the outer belt and a combination of protons and electrons forming the inner belts. In addition, the radiation belts contain lesser amounts of other nuclei, such as alpha particles. The belts pose a hazard to satellites, which must protect their sensitive components with adequate shielding if their orbit spends significant time in the radiation belts.
Van Allen, radiation


in 1797
Franz Schubert

Franz Peter Schubert was an Austrian composer. Although he died at an early age, Schubert was tremendously prolific. He wrote some 600 Lieder, nine symphonies (including the famous "Unfinished Symphony"), liturgical music, operas, some incidental music, and a large body of chamber and solo piano music.
in 1937
Philip Glass

Philip Glass is an American composer. One of the highest profile composers writing "classical" music today, he is often said to be one of the most influential composers of the late 20th century. His music is also often (controversially) described as minimalist, along with the work of the other "major minimalists" La Monte Young, Terry Riley and Steve Reich.


in 1606
Guy Fawkes

Guy Fawkes also known as Guido Fawkes, the name he adopted while fighting for the Spanish in the Low Countries, belonged to a group of provincial English Catholics who planned the failed Gunpowder Plot of 1605.
in 1970
Mikhail Mil

Mikhail Leontyevich Mil was a Soviet aerospace engineer. He was founder of the Mil Moscow Helicopter Plant, which is responsible for many well-known Soviet helicopter models.
© 2011-2019, «»