लोकप्रिय पोस्ट

सोमवार, 27 फ़रवरी 2012

रास्ट्रीय विज्ञानं दिवस पर गणित और विज्ञानं के गीतों का शुभारम्भ.


रास्ट्रीय विज्ञानं दिवस पर आप सभी को बधाई !
आज से प्रगति विज्ञानं संस्था, गणित और विज्ञानं के सूत्रों और परिभाषाओं को समझने के लिए उन्हें गीतों के रूप में तैयार कर आज की युवा शक्ति के मोबाईल में डाल देना चाह रही है ताकि संगीत की तरह ही ये युवा हर समय सुने और याद करने का भी ये सरल और आसन तरीका है या यो कहे की गणित अब उनके दिलो दिमाग पर छा जाने के लिए आतुर है
आइये आज से इसकी शुरुआत करते है
दीपक शर्मा
सचिव
प्रगति विज्ञानं संस्था
०७५२०२४४०४३
अंक है गणना के आधार शुन्य से नो तक दस आकार! को गाया है लक्ष्मी शर्मा ने

मंगलवार, 7 फ़रवरी 2012

गुरुवार, 2 फ़रवरी 2012

FIREBALL

Last night, a spectacular fireball appeared in the skies of eastern Texas and Oklahoma. As is often the case for unexpected night-sky phenomena, few pictures are available. The best so far comes from a police dash-board camera in the small town of Little River-Academy, TX:
Eye-witness Daryn Morran reports: "At approximately 756pm CST, over Abilene, Texas, I saw an object falling from the sky much brighter and long-lasting than anything I've seen. [The fireball] lasted close to 8 secs before completely burning out. At first, it was bright white, and then started slowing down and getting brighter. Then it exploded like a firecracker artillery shell into several pieces, flickered a few more times and then slowly burned out... awesome!!!"

Another observer in Coppell, Texas, reported a "double boom heard at 8:00:30 CST. [The object appeared to be] 1/2 the size of the waxing moon, and broke into two major chucks with many smaller pieces. It had a 'white plasma' (sun-colored) look with a long golden tail." (This report was relayed by NWS meteorologist Joe Harrris in Frt Worth.)

According to Bill Cooke of NASA's Meteoroid Environment Office, this was probably a natural object--a small asteroid about the size of a car or bus--not a decaying satellite or other manmade space debris. The fireball, which disintegrated in the general vicinity of Dallas-Fort Worth, was bright enough to be seen on NASA cameras located in New Mexico more than 500 miles away. "It was about as bright as the full Moon (astronomical magnitude -13)," estimates Cooke, who is still analyzing data and sighting reports in hopes of calculating the object's orbit. He might yet figure out where the Texas fireball came from. Stay tuned for updates.