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Bola Cahaya

Dimulai oleh utusan langit, Juli 19, 2009, 07:29:53 AM

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utusan langit

ada yang bilang ini merupakan plasma yang dihasilkan oleh petir,.. namun apa sebenarnya materi yang disebut bola cahaya yang dalam beberapa tahun terakhir menjadi objec studi ilmuan petir?

ksatriabajuhitam

bola cahaya?
kok googling pake keyword "light ball" yang keluar malah pokemon ya :D
kalo "thunder ball" malah muncul pelm

apakah yang dimaksud itu sonoluminescene ?
not all the problems could be solved by the sword, but sword holder take control of problems.
ForSa versi mobile: http://www.forumsains.com/forum?wap2

utusan langit

wah,...

tak copy-paste kan dari mbah google,..
mungkin tau kalau bola petir

Ball lightning may be an atmospheric electrical phenomenon, the physical nature of which is still controversial. The term refers to reports of luminous, usually spherical objects which vary from pea-sized to several meters in diameter. It is sometimes associated with thunderstorms, but unlike lightning flashes, which last only a fraction of a second, ball lightning reportedly lasts many seconds.
Laboratory experiments have produced effects that are visually similar to reports of ball lightning, but it is presently unknown whether these are actually related to any naturally occurring phenomenon. Scientific data on natural ball lightning is scarce owing to its infrequency and unpredictability. The presumption of its existence is based on reported public sightings, and has therefore produced somewhat inconsistent findings. Given inconsistencies and the lack of reliable data, the true nature of ball lightning is still unknown.
Until recently, ball lightning was often regarded as a fantasy or a hoax. Reports of the phenomenon were dismissed for lack of physical evidence, and were often regarded the same way as UFO sightings. However, several purported photos and videos exist.
Perhaps the most famous story of ball lightning unfolded when 18th-century physicist Georg Wilhelm Richmann installed a lightning rod in his home and was struck in the head — and killed — by a "pale blue ball of fire."



http://www.youtube.com/watch?v=6ioN-3UWYrY

utusan langit

yang jadi pertanyaan saya,..
mungkin kawan-kawan disini bisa memberikan info,.. bagaimana bisa muncul bola petir? apakah bola petir ini berbahaya?

Monox D. I-Fly

Kutip dari: ksatriabajuhitam pada Juli 23, 2009, 08:15:11 PM
bola cahaya?
kok googling pake keyword "light ball" yang keluar malah pokemon ya :D
kalo "thunder ball" malah muncul pelm

Setau saya, bahasa Inggrisnya "bola cahaya" itu "orb".
Gambar di avatar saya adalah salah satu contoh dari kartu Mathematicards, Trading Card Game buatan saya waktu skripsi.

Farabi

Kalian semua juga liat ya? Itu nuklir bukan petir, berarti kita semua ngulang. Berarti satu satunya yang belum damai cuma saya aja ya? Makanya kita semua ngulang lagi.
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