Program Fun With Science Di MPASC

Satu program Fun With Science telah diadakan di Melaka Planetarium Adventure Science Centre. Seramai 30 orang pelajar telah menyertainya. Bayaran masuk untuk setiap pelajar ialah RM10 seorang. Antara aktiviti yang dijalankan ialah mengembara di angkasa lepas, acara berkumpulan, membina comet dan mempelajari Electromagnet Spectrum.

Aktiviti pertama merupakan menonton video 3D di dewan teater. Satu persembahan yang menarik apabila kita berasa seolah-olah mengembara di angkasa lepas selama 20 minit. Pelajar-pelajar sangat teruja. Walau bagaimanapun, kamera tidak dibenarkan berada dalam keadaan on. Jadi tiada satu pun gambar diambil.

Ini merupakan aktiviti kedua. Pelajar berkumpul untuk taklimat ringkas berkaitan aktiviti kedua.

Pelajar dikehendaki menjawab soalan yang disediakan dengan mencari maklumat di sekitar kawasan pameran. Terdapat lebih 10 soalan untuk diselesaikan dalam masa setengah jam.

Pelajar bergerak dalam kumpulan mencari maklumat yang dikehendaki.

Sambil menyelam minum air. Haish!

Setelah setengah jam berlalu, kertas dikutip dan keputusan satu kumpulan akan diilih sebagai pemenang.

Peralatan untuk aktiviti ketiga. Aktiviti mencipta 'comet'

Pelajar diterangkan fenomena bagaimana terjadinya 'comet' iaitu gabungan ammonia, debu, air dan gas.

Demonstrasi ringkas berkaitan dengan ais kering atau dry ice.

Aktiviti sedang dijalankan. Berjayakah mereka membina comet ciptaan mereka sendiri?

Gabungan bahan-bahan yang disediakan perlu ditekan sehingga melekat antara satu sama lain.

Inilah dia rupa comet ciptaan kumpulan Hafizudin. :)

Selesai aktiviti sesi pertama, pelajar berehat dan kembali untuk sesi kedua.

Aktiviti yang disertai di sebelah petang. Pelajar diberikan lima beads putih yang akan bertukar warna apabila terdedah dengan cahaya UV.

Seorang pelajar sedang mengikat beads dengan ribbon.

Lihatlah! Warna beads putih telah bertukar warna!!

Acara terakhir ialah sesi soal jawab. Pelbagai soalan ditanya kepada penceramah. Ada kalanya lucu jugak dengan soalan yang tidak logik seperti alien yang telah dimomok-mmokkan dalam filem. Kesian pelajar kita kan? Pemikiran mereka telah dipenuhi dengan cerita-cerita yang tidak pasti kesahihannya malah kadang-kala tidak masuk akal.

Keseluruhannya, agak menarik. Mungkin untuk lawatan kali kedua, pelajar akan dilibatkan satu sesi sahaja memandangkan kawasan pameran agak terhad dan bagi saya, satu sesi sudah mencukupi untuk pelajar menikmatinya.

Pelajar-pelajar bergambar kenangan sebelum pulang.

Cubalah lawat ke sana atau boleh klik sini untuk perincian berkaitan MPASC ini. 

A New Relativity Theory? : By Shamsul Alam

We know that the relativity theory published by Einstein i 1915.. One student said that he watched one documentary about this theory on Discovery Channel and according to that documentary, there is a new theory of relativity. Really? Teacher never knows??? hehe...I mean I never heard about this before.

So, below is the information about the relativity theory..that I always use to explain my students.

Geometry of Newtonian gravity

At the base of classical mechanics is the notion that a body's motion can be described as a combination of free (or inertial) motion, and deviations from this free motion. Such deviations are caused by external forces acting on a body in accordance with Newton's second law of motion, which states that the net force acting on a body is equal to that body's (inertial) mass multiplied by its acceleration.^[13] The preferred inertial motions are related to the geometry of space and time: in the standard reference frames of classical mechanics, objects in free motion move along straight lines at constant speed. In modern parlance, their paths are geodesics, straight world lines in spacetime.

Ball falling to the floor in an accelerating rocket (left), and on Earth (right)

 

Conversely, one might expect that inertial motions, once identified by observing the actual motions of bodies and making allowances for the external forces (such as electromagnetism or friction), can be used to define the geometry of space, as well as a time coordinate. However, there is an ambiguity once gravity comes into play. According to Newton's law of gravity, and independently verified by experiments such as that of Eötvös and its successors (see Eötvös experiment), there is a universality of free fall (also known as the weak equivalence principle, or the universal equality of inertial and passive-gravitational mass): the trajectory of a test body in free fall depends only on its position and initial speed, but not on any of its material properties.^[15] A simplified version of this is embodied in Einstein's elevator experiment, illustrated in the figure on the right: for an observer in a small enclosed room, it is impossible to decide, by mapping the trajectory of bodies such as a dropped ball, whether the room is at rest in a gravitational field, or in free space aboard an accelerating rocket generating a force equal to gravity.^[16]

Do you know about that new theory? Did you watch that documentary?  Share with me so that I can learn something new?