Ge Xinxin put on her straw slippers and took off her coat. Stepping on the wooden floor made her sore ankles feel relieved. She went to the bathroom first to brush her teeth and wash her face, set the alarm clock for 0:30, and then sat on a rattan rocking chair.
Pick up a blanket and cover yourself with it to sleep.
The old-fashioned mechanical alarm clock brought by "Bell..." often needs to be calibrated. The only advantage is that the sound is loud enough to wake up an elephant. Ge Xinxin tidied her clothes a little, washed her face with cold water, and returned to the laboratory.
.Leaving only the red flashlight again, she took out the silver bromide gelatin she had just put in the box, poured out the water on the surface, and then wrapped some gelatin in a piece of white cloth that had been boiled in boiling water and dried, like squeezing it on a cake.
Squeeze all the gelatin into a line into a large beaker with 3 liters of distilled water several times like cream. Gently shake the beaker. After a few minutes, pour out the water in the beaker and add 2 liters of distilled water. After repeating this 5 times,
Pour off the water. Heat the gelatin again until it melts, stir for 10 minutes, let it sit for a while, and pour off the water on the surface.
After reaching this step, Ge Xinxin let out a long breath. This is the most tiring of all steps. After this step is completed, it will not be too difficult. He took out a simple coating device he made. It is actually two sticks.
There are parallel guide rails with a distance of 30cm and a glass strip that has been polished to prevent scratching the hands. Ge Xinxin carefully pinched the edge with her hands, took out a piece that had been cut long ago, washed it ten times with distilled water, and then soaked it in ethanol for a day.
Place the 15cmx20cm glass piece in the middle of the guide rail and fix it.
These glass pieces were specially ordered by her in the name of the laboratory a few days ago and were just delivered a few days ago. The glass factory has a workshop dedicated to making supporting glass instruments and consumables for the laboratory to meet the laboratory's requirements for high precision and high precision.
Purity requirements. These glass pieces are manufactured with the highest degree of uniformity possible. However, Ge Xinxin is not confident about the quality control of the glass factory. She asked a trainee laboratory technician to use a micrometer to measure whether the thickness of the glass is uniform one by one.
There were a total of one hundred glass plates sent. The trainee experimenter carefully measured each one with great patience, and selected forty-three pieces for use according to the standards given by Ge Xinxin.
The thickness tolerances of these 43 glass plates were within the acceptable range. However, she only planned to make 20 pieces today. She looked at the level on the table and confirmed that the current table was level, then she dug out a spoonful of gelatin.
Pour it evenly on one side of the glass piece, and use a glass strip to spread the gelatin evenly along the guide rail. In this way, she made 20 pieces of glass piece coated with silver bromide gelatin. Carefully insert the glass piece into the slotted wood
Put desiccant into the bottom of the box, cover it, and put it in the cabinet together with the box containing the beaker containing gelatin - it has also been measured with a level beforehand and adjusted to a level state.
She made a dry photographic glass plate. Although the smoothness of applying it with a glass strip is limited, it is not a big problem as long as the glass plate is qualified. The glass dry plate emulsion is not like the micron level on the film, which is generally 0.5-1 mm. There is no problem with a slight error.
Large. On the contrary, it must be kept absolutely level after application and while waiting for drying. Although the flow of gelatin is not good, once it is tilted, it will still cause flow and problems will immediately arise.
Ge Xinxin finally shook her aching arm, turned on the light, tidied up a little and left the laboratory. At this time, the sky in the east had begun to turn a fishy white.
Two nights later, Ge Xinxin brought a small suitcase from her dormitory. She took out a technica3000 and two film cassettes. After closing the curtains tightly, she used the computer under the light of a red flashlight.
The glass knife that came with her cut the two dry glass plates into 4x5 inches and put them into the film box, and put the rest back into the wooden box and closed it. Then, she put the camera and film box back into the suitcase and put them in the laboratory.
Lingaochan safe is locked.
The next day happened to be a nice sunny day. In the afternoon, Ge Xinxin took out the camera body from the suitcase, installed the p65+, set the sensitivity to 50, installed the apolan, set the aperture and shutter to f8, and then increased the shutter speed from 1
/25 and started to speed up step by step to 1/200. Then, I replaced the back with a film box, took a picture with the shutter speed of 1/12 and 1/25, and put away the camera, the back and the film box.
The film box was placed alone in a locker in the laboratory, and Ge Xinxin locked the suitcase back into the safe.
Back in the laboratory, Ge Xinxin opened the locked drawer at the bottom of the medicine cabinet and took out several bottles of reagents wrapped in black paper. When she opened the package, the "Chinese Medicine" label with obvious 21st century characteristics showed their origin -
Precious medicines from the old time and space. Some of these medicines were not manufactured by Lingao's chemical industry department, but they were unable to be analytically pure. For the sake of caution, Ge Xinxin decided to use spare parts from the old time and space. She picked out the sulfide
Sodium sulfate, methamphetamine sulfate, hydroquinone and sodium sulfite, and then put the remaining reagents back into the drawer. Then, she found borax from the upper layer of the medicine cabinet and put it on the laboratory table.
"I'm afraid the only comfortable thing here is that someone helps wash the beaker." While muttering to herself, Ge Xinxin took out a 1L large beaker. Added 750ml of distilled water to the beaker and heated it on the gas lamp. Then she entered the balance room,
Open the constant electronic balance and carefully weigh 2.5g of methaminophenol sulfate, 6g of hydroquinone, and 2.5g of borax. Then use the pallet balance to weigh 125g of sodium sulfite, pour it into the beaker, and carefully stir until the temperature of the liquid in the cup rises to
50c, then stop heating. Add 500ml cold distilled water, stir evenly and pour into a 1.25l Coke bottle. Carefully squeeze out the upper air, cap the bottle and label it as "Developer". She then weighs the amount with a pallet balance.
Dissolve 300g of sodium thiosulfate in 750ml of hot water, add 500ml of cold water, put it into a Coke bottle, squeeze out the air, cover it and label it "fixer". Soak both bottles of liquid in a cold water bath.
Ge Xinxin then put all the reagents back into place, cleaned the electronic balance, and put in a glass cover containing desiccant after the power was turned off. Then she called her trainee laboratory technician and asked her to tidy up all the instruments and prepare a set of instruments.
A large basin of warm water.
"The flask must be cleaned!" Ge Xinxin said this without getting tired of saying it. She didn't have much affection for the two girls under her as a teacher and student. She never gave them standards to work and taught them to work.
Just make excuses.
After doing all this, she took off her lab coat and once again took the commuter bus to Bairen for dinner - this time she planned to go to the farm tea house, which was said to have several new "Western foods": Indian flying pancakes and Spanish seafood fried rice.
And so on. She decided to change her taste.
After eating, she returned to the elders' residential area in Bairen City, where she also bought an apartment in accordance with the policy - it was the smallest apartment. Because she mainly slept in the dormitory, she used it as a storage room.
They are all personal items. In addition to the luggage that she brought with her, there are also various things purchased in this time and space, mainly various items purchased during the trophy auction. Among them are quite a few of her favorite European groceries - real German items.
If you could take some of the handmade products from various countries, France, Spain and Italy, back to the past and post them on Weibo, it would arouse the envy of many girls.
But she came back to the dormitory mainly to take a good bath - there are only public bathrooms with showers in the laboratory dormitory building. After taking a bath in the dormitory, Ge Xinxin applied a little bit of herbal essential oil extracted by herself - this is
A habit she inherited from her studies in France - she immediately boarded the train to the laboratory. The temperature in Hainan in spring was often above 20 degrees Celsius in the original time and space, but in the 17th century during the Little Ice Age, it was only about 15 degrees Celsius on a clear night. Evening breeze
Mixed with the moisture, she suddenly felt a little cold.
"The hair dryer can't be used. It's really troublesome." She couldn't help but complain a little when she thought about the fact that the hair dryer had not been used a few times since the d day and she had been sleeping all the time - the industrial area was "saving electricity for power generation" recently, so it was noisy.
The electricity consumption of senior citizens has been greatly reduced.
Ge Xinxin put her hair behind her ears with her hands and looked out of the car. Although the factory area, which has an order of magnitude "advantage" compared to other places in the world, has been polluting hard, the night sky in the 17th century still has a beauty that is rare in the 21st century.
The view is gorgeous. Sirius in the southern sky declares its status as a bright star of magnitude -1.47 with its extremely dazzling brightness.
"Just wait, I will record your spectra again in a year." muttering softly to herself, Ge Xinxin picked up her handbag and shook the rope leading to the driver's cab to notify the driver to stop at the upcoming chemical plant passenger terminal.
.
Back in the laboratory, Ge Xinxin took out a clean rectangular glass shallow dish, poured 1cm of developer solution into it, put it into the 22C water bath that had just been mixed, and also poured a plate of fixer solution into the water bath. In addition,
Prepare a plate of 5% acetic acid and a large beaker of distilled water. After taking out the film box from the locker, she arranged the darkroom again and opened the dark box under a red flashlight. She took out the glass plate and gently placed it in a shallow dish of developer.
, looked at the watch. Gently shake the shallow plate for 5 minutes, then take out the plate and put it in 5% acetic acid for 10 seconds. Quickly take it out and gently shake it in distilled water for a few times, then put it into the fixer plate. Shake the plate gently as well.
After 5 minutes, take out the negative plate, rinse it with distilled water and insert it on the negative plate rack. After similarly rinsing the other negative plate, Ge Xinxin turns on the light, pours the used developer and fixer into a special recycling bottle, and freshly
Then she put it in a light-proof cabinet. Then she called the trainee laboratory technician on duty to ask her to pack up the instruments, and she signed the registration book and left the laboratory. (To be continued.)