Relationship Between Matter and Energy.
So far we have been discussing matter and energy as though they were two entirely different kinds of reality.
Yet the two are usually inseparably related. Every object contains some kind of energy, and the idea of energy is usually meaningless unless it can be described in terms of the substance with which it is associated. For example, heat energy doess not exist in a true vacuum and electric energy usually resides in particles or objects.
In 1905, Prof. Einstein expressed the relationship between matter and energy with the following formula:
E = mc2
In which E stands for units of energy (work units), m stands for mass, and c is the speed of light.
Einstein developed this formula entirely from theoretical considerations, and there was no way of verifying it in the laboratory at that time.
Recent experiments, however, have shown that the formula is probably correct.
The Great Teachers
So far we have been discussing matter and energy as though they were two entirely different kinds of reality.
Yet the two are usually inseparably related. Every object contains some kind of energy, and the idea of energy is usually meaningless unless it can be described in terms of the substance with which it is associated. For example, heat energy doess not exist in a true vacuum and electric energy usually resides in particles or objects.
In 1905, Prof. Einstein expressed the relationship between matter and energy with the following formula:
E = mc2
In which E stands for units of energy (work units), m stands for mass, and c is the speed of light.
Einstein developed this formula entirely from theoretical considerations, and there was no way of verifying it in the laboratory at that time.
Recent experiments, however, have shown that the formula is probably correct.
The Great Teachers
Guru besar berbeda dari "great teacher", sebab seorang "great teacher" tidak harus seorang guru besar dan tidak semua (bahkan jarang) guru besar yang juga seorang "great teacher".
Einstein dan Tjokroaminoto adalah contoh seorang "Great Teacher" yang bukan Guru Besar, sedangkan Planck dan Bohr adalah guru besar yang sekaligus "Great Teacher".
Sering menjadi rancu.
Mungkin istilah Indonesia yang tepat untuk "Professor" adalah "Mahaguru", sebab istilah indonesia untuk "Student" adalah "Mahasiswa".
Bagaimana dengan seorang dosen?
Dosen tetaplah seorang guru, guru kecil yang kadang-kadang dibesar-besarkan.
Apa syaratnya menjadi "Great Teacher?"
Prof. Bohr & Prof. Max Planck
Ada gelombang besar perubahan yang menghempas peradaban sebagai wujud gagasan besarnya melalui sepak terjang para murid-muridnya.
Dosen, kata tetangga sebelah adalah orang yang bukunya sak dos dan duitnya sak sen. he.,he.,ngerti kan maksudnya?
Berarti harus ada "Great Student", karena "Great Teacher" harus ada sepak terjang murid-muridnya.
Sources:
Dr. rer. nat. Muhammad Farchani Rosyid, M.Sc.
Arip Nurahman Notes
Modern Physics.
http://www.mpg.de/en [Max Planck Institute]
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