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Thomas J. Johnson, the creator of the modern Schmidt-Cassegrain telescope and the founder of Celestron, died early this morning (March 13, 2012), according to Celestron president and CEO Joe Lupica. Johnson was 89. He ranked among the most important figures shaping the last half century of amateur astronomy.

Dr. Mandelbrot, a maverick mathematician, developed an innovative theory to study uneven shapes and applied it to physics, biology and many other fields.

Se state mettendo da parte i soldi per comprare la vostra auto dei sogni, se siete indecisi sull'acquistare un monolocale in centro oppure un SUV, o peggio ancora, vi girano semplicemente perchè non avete risparmi da mettere da parte per comprare un auto… buone notizie! Tranquilli! Tutto questo ben presto non avrà più senso.

In 1953, he underwent an experimental brain operation in Hartford to correct a seizure disorder, only to emerge from it fundamentally and irreparably changed. He developed a syndrome neurologists call profound amnesia. He had lost the ability to form new memories. For the next 55 years, each time he met a friend, each time he ate a meal, each time he walked in the woods, it was as if for the first time. And for those five decades, he was recognized as the most important patient in the history of brain science.