paragraph_text: Han-era astronomers adopted a geocentric model of the universe, theorizing that it was shaped like a sphere surrounding the earth in the center. They assumed that the Sun, Moon, and planets were spherical and not disc-shaped. They also thought that the illumination of the Moon and planets was caused by sunlight, that lunar eclipses occurred when the Earth obstructed sunlight falling onto the Moon, and that a solar eclipse occurred when the Moon obstructed sunlight from reaching the Earth. Although others disagreed with his model, Wang Chong accurately described the water cycle of the evaporation of water into clouds.

paragraph_text: Wang Chong (; 27 – c. 100 AD), courtesy name Zhongren (仲任), was a Chinese meteorologist, astronomer, and philosopher active during the Han Dynasty. He developed a rational, secular, naturalistic and mechanistic account of the world and of human beings and gave a materialistic explanation of the origin of the universe. His main work was the "Lunheng" (論衡, "Critical Essays"). This book contained many theories involving early sciences of astronomy and meteorology, and Wang Chong was even the first in Chinese history to mention the use of the square-pallet chain pump, which became common in irrigation and public works in China thereafter. Wang also accurately described the process of the water cycle.

paragraph_text: The goal of the Burmese constitutional referendum of 2008, held on 10 May 2008, is the creation of a "discipline-flourishing democracy". As part of the referendum process, the name of the country was changed from the "Union of Myanmar" to the "Republic of the Union of Myanmar", and general elections were held under the new constitution in 2010. Observer accounts of the 2010 election describe the event as mostly peaceful; however, allegations of polling station irregularities were raised, and the United Nations (UN) and a number of Western countries condemned the elections as fraudulent.

paragraph_text: The minimum wage in the United States is set by US labor law and a range of state and local laws. Employers generally have to pay workers the highest minimum wage prescribed by federal, state, and local law. Since July 24, 2009, the federal government has mandated a nationwide minimum wage of $7.25 per hour. As of January 2017, there were 29 states with a minimum wage higher than the federal minimum. From 2014 to 2015, nine states increased their minimum wage levels through automatic adjustments, while increases in eleven other states occurred through referendum or legislative action. In real terms, the federal minimum wage peaked at $11.54 per hour in 1968, using 2017 inflation - adjusted dollars.

paragraph_text: Beginning in January 2017, Massachusetts and Washington state have the highest minimum wages in the country, at $11.00 per hour. New York City's minimum wage will be $15.00 per hour by the end of 2018. There is a racial difference for support of a higher minimum wage with most black and Hispanic individuals supporting a $15.00 federal minimum wage, and 54% of whites opposing it. In 2015, about 3 percent of White, Asian, and Hispanic or Latino workers earned the federal minimum wage or less. Among Black workers, the percentage was about 4 percent.

paragraph_text: The Journal of Materials Engineering and Performance is a monthly peer-reviewed scientific journal published by Springer Science+Business Media on behalf of ASM International. The editor-in-chief is Rajiv Asthana (University of Wisconsin). The journal covers all aspects of materials engineering broadly described as materials selection, design, processing, characterization, and evaluation. The scope includes all substances used in engineering applications with a tendency toward constituent materials that comprise a larger system.

paragraph_text: The national minimum wage (NMW) took effect on 1 April 1999. On 1 April 2016 an amendment to the act attempted an obligatory ``National Living Wage ''for workers over 25, which was implemented at a significantly higher minimum wage rate of £7.20 (£7.50 from April 2017), and is expected to rise to at least £9 per hour by 2020.

paragraph_text: In 2010 the median income in Puerto Rico was $19,370, which is just over half that of the poorest state (Mississippi, $37,838) and 37% of the nationwide average ($51,144). According to the Bureau of Labor Statistics of the Department of Labor of the United States, the mean annual salary of residents of Puerto Rico is $27,190, the lowest among U.S. territories continuously surveyed periodically by this institution. Guam has the second lowest mean salary to $31,840, closely followed Mississippi, a state, with $34,770. This spread in mean wages could be explained by a minimum wage law for certain industries that are capped to 70% of the federal minimum wage of $7.25 per hour.

paragraph_text: Beginning in January 2017, Massachusetts and Washington will have the highest state minimum wages. There is a racial difference for support of a higher minimum wage with most black and Hispanic individuals supporting a $15.00 federal minimum wage, and 54% of whites opposing it. In 2015, about 3 percent of White, Asian, and Hispanic or Latino workers earned the federal minimum wage or less. Among Black workers, the percentage was about 4 percent.

paragraph_text: The minimum wage in the United States is set by US labor law and a range of state and local laws. Employers generally have to pay workers the highest minimum wage prescribed by federal, state, and local law. Since July 24, 2009, the federal government has mandated a nationwide minimum wage of $7.25 per hour. As of January 2018, there were 29 states with a minimum wage higher than the federal minimum. From 2017 to 2018, eight states increased their minimum wage levels through automatic adjustments, while increases in eleven other states occurred through referendum or legislative action. Washington has the highest state minimum wage at $11.50 per hour.

paragraph_text: In 1910, in conjunction with advocacy work led by Florence Kelley of the National Consumer League, the Women's Trade Union League (WTLU) of Massachusetts under the leadership of Elizabeth Evans took up the cause of minimum wage legislation in Massachusetts. Over the next two years, a coalition of social reform groups and labor advocates in Boston pushed for minimum wage legislation in the state. In 1912, Massachusetts passed the first American minimum wage legislation, which established a state commission for recommending non-compulsory minimum wages for women and children. Within eight years, at least thirteen U.S. states and the District of Columbia would pass minimum wage laws, with pressure being placed on state legislatures by the National Consumers League in a coalition with other women's voluntary associations and organized labor. The United States Supreme Court of the Lochner era consistently invalidated compulsory minimum wage laws. Advocates for these minimum wage laws hoped that they would be upheld under the precedent of Muller v. Oregon, which upheld maximum working hours laws for women on the grounds that women required special protection that men did not. However, the Court did not extend this principle to minimum wage laws, considering the latter as interfering with the ability of employers to freely negotiate wage contracts with employees.

paragraph_text: The Sichuan government raised the minimum wage in the province by 12.5 percent at the end of December 2007. The monthly minimum wage went up from 400 to 450 yuan, with a minimum of 4.9 yuan per hour for part-time work, effective 26 December 2007. The government also reduced the four-tier minimum wage structure to three. The top tier mandates a minimum of 650 yuan per month, or 7.1 yuan per hour. National law allows each province to set minimum wages independently, but with a floor of 450 yuan per month.

paragraph_text: Nasser also attempted to maintain oversight of the country's civil service to prevent it from inflating and consequently becoming a burden to the state. New laws provided workers with a minimum wage, profit shares, free education, free health care, reduced working hours, and encouragement to participate in management. Land reforms guaranteed the security of tenant farmers, promoted agricultural growth, and reduced rural poverty. As a result of the 1962 measures, government ownership of Egyptian business reached 51 percent, and the National Union was renamed the Arab Socialist Union (ASU). With these measures came more domestic repression, as thousands of Islamists were imprisoned, including dozens of military officers. Nasser's tilt toward a Soviet-style system led his aides Boghdadi and Hussein el-Shafei to submit their resignations in protest.

paragraph_text: Dr. John Augustus Just (January 9, 1854 – September 13, 1908) was a German-born chemist and inventor. He is best known for his investigative work into recovery of precious metals from their ores and for completing the process for evaporating milk. For his scientific achievements, he was awarded a medal by the committee celebrating Berthelot's 50th anniversary.

paragraph_text: The minimum wage in the United States is set by US labor law and a range of state and local laws. Employers generally have to pay workers the highest minimum wage prescribed by federal, state, and local law. Since July 24, 2009, the federal government has mandated a nationwide minimum wage of $7.25 per hour. As of January 2018, there were 29 states with a minimum wage higher than the federal minimum. From 2017 to 2018, eight states increased their minimum wage levels through automatic adjustments, while increases in eleven other states occurred through referendum or legislative action.

paragraph_text: In the United States, different states are able to set their own minimum wages independent of the federal government. When the state and federal minimum wage differ the higher wage prevails. As of January 2018, there were 29 states with a minimum wage higher than the federal minimum. Washington has the highest state minimum wage at $11.50 per hour. A number of states have also in recent years enacted state preemption laws, which restrict local community rights, and bar local governments from setting their own minimum wage amounts. As of 2017, state preemption laws for local minimum wages have passed in 25 states.

paragraph_text: The Journal of Nanoparticle Research is a monthly peer-reviewed scientific journal published by Springer Science+Business Media. It focuses mainly on physical, chemical, and biological phenomena and processes in structures of sizes comparable to a few nanometers. It was established in 1999 and the editor-in-chief is Mihail C. Roco (National Science Foundation). According to the "Journal Citation Reports", the journal has a 2016 impact factor of 2.020.

paragraph_text: The first celluloid as a bulk material for forming objects was made in 1855 in Birmingham, England, by Alexander Parkes, who was never able to see his invention reach full fruition, after his firm went bankrupt due to scale - up costs. Parkes patented his discovery after realising a solid residue remained after evaporation of the solvent from photographic collodion.

paragraph_text: The minimum wage in the United States is set by US labor law and a network of state, and local laws. Employers generally must pay workers the highest minimum wage prescribed by federal, state, and local law. As of July 2016, the federal government mandates a nationwide minimum wage of $7.25 per hour. As of October 2016, there are 29 states with a minimum wage higher than the federal minimum. From 2014 to 2015, nine states increased their minimum wage levels through automatic adjustments, while increases in 11 other states occurred through referendum or legislative action. In real terms, the federal minimum wage peaked near $10.00 per hour in 1968, using 2014 inflation - adjusted dollars.

paragraph_text: After a study of the minimum wage laws in Australia and New Zealand The Liberal Party acted to set up a minimum wage in the most heavily sweated or underpaid industries, as part of a broad range of social reforms. Winston Churchill, president of the Board of Trade, introduced the Trade Boards Act in 1909. It created boards that set minimum wage criteria that were legally enforceable. The main provision was to set minimum wages in certain trades with the history of low wages, because of surplus of available workers, the presence of women workers, or the lack of skills. At first it applied to four industries: chain - making, ready - made dresses. paper - box making, and the machine - made lace and finishing trade. About 70 per cent of their 200,000 workers were women.

Question: What is the national minimum monthly wage in the country where the person who described the process of evaporation lived?
Answer: 450 yuan per month