The Nobel Prize is always awarded in Swedish krona, and the amount of the annual prize depends on the investment income of the Nobel Fund. 190 1 When awarding prizes for the first time, each prize was150,000 kronor, which was equivalent to the salary of a Swedish professor for 20 years. 1980, the number of nobel prizes reached SEK 1 10,000, SEK 6 million 199 1, SEK 6.5 million 1992, SEK 6.7 million1993,2000. From 200 1 to 20 1 1, the single bonus is100000 Swedish kronor (20 1 1, the contract is converted into14500 USD). The gold medal weighs about 270 grams and contains gold. The medal is about 6.5 cm in diameter, and the front is a Nobel relief image. Different awards and medals have different patterns on the back, and each award certificate has different patterns and words. The award ceremony is grand and simple, and the number of participants per year is limited to 1500 to1800; Men must wear tuxedos or national costumes, and women should wear solemn evening dresses; The white flowers and yellow flowers used in the ceremony must be flown in from the Italian town of San Morey (where Nobel died).