How many times can a microscope see cells?
The main structure of the microscope is divided into three parts: mechanical part, lighting part and optical part. 1. Mechanical part (1) mirror base: the base of the microscope to support the whole mirror body
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- 1. At a magnification of 100 times, we can see 15 cells in a row side by side. What is the length of each cell
- 2. Does the microscope magnify the length or width of the specimen or the magnifying length and width? If the answer is the latter, can't it be said that the enlargement is "area"?
- 3. Relationship between magnification of microscope and actual magnification
- 4. What is the magnification of a microscope?
- 5. The magnification of the microscope is equal to?
- 6. What is the microscope with the highest magnification at present? emergency No, how did I find out it was a scanning tunneling microscope?
- 7. How many square kilometers does North Korea have
- 8. Which province has the largest land area in China?
- 9. Which province has the largest land area in China`
- 10. What is China's land area?
- 11. When the aircraft taxis on the runway, the taxiing time is 16.2s, and the taxiing distance is 1200m. If it is too similar, it is considered that the acceleration of the aircraft does not keep stable If the acceleration is constant, find the acceleration of the plane and the speed of the plane when it takes off,
- 12. The taxiing time is 5S and the taxiing distance is 1000m. If the flight acceleration is approximately considered to remain unchanged, calculate the acceleration of the aircraft
- 13. What is the sector area formula? Now we know that the center angle of the circle is 90 degrees and the length of the generatrix is 4. How can we find the area of this sector?
- 14. Volume formula and explanation of cone?
- 15. Find, in primary school learned formula unit, area
- 16. English translation how is you university subject usually broken down?what are they key areas of study within your fired?choose 3-4 key areas and briefly describe the main features of each
- 17. Notes to the water classic Yi Shui goes north by Yidu and forgets to return
- 18. Translation of Yidu Yiduji (excerpt) From huangniutan east to Xiling boundary, to Xiakou baixu Li, the mountains and rivers are winding, and the mountains on both sides of the gorge are full of peaks, and the moon is not seen in the middle of the day. The cliff or qianxu Zhang, with colorful stones, can describe many kinds of trees, and the trees are luxuriant, and the winter and spring are a little over. (2) the ape is singing until it is clear, the valley is ringing, and the cold is endless. The so-called Three Gorges is one of them. (2) Shansong's words: often heard of the water disease in the gorge, the Secretary and the oral biography have learned that they are afraid of each other, Once there was no such thing as the beauty of mountains and rivers. When Yu came to this place, he was very happy. It was better to be close to him than to hear from him
- 19. A car has a speed of 50 kilometers per hour. There is a clock which is 3 minutes per hour. If you use the clock to measure the speed of the car, what is the speed of the car?
- 20. The speed of a car is 70 km / h. now measured by a meter which is 5 minutes slower per hour, the speed of the car is () The original speed of the car was 70km / h, that is, 70km / h. now it is measured with a meter that is 5 minutes slower than an hour. That is to say, although the normal time is 1 hour and the car runs 70km, it only takes 55 minutes, that is, 11 / 12 hours Then the speed of this car is 70 / (11 / 12) = 840 / 11 km / h How to understand the 11 / 12 inside