the stairs incidence

The incident angle refers to the angle between the light ray and the normal line of the surface of the medium when it enters the surface of the medium, and the reflection angle refers to the angle between the light ray and the normal line of the surface of the medium when it is reflected from the surface of the medium. In the optical diagram, a straight line with an arrow is usually used to represent the light ray. The incident light ray is shot at the interface of the two media, and the straight line (that is, the normal line) is vertical to the interface through the incident point. The angle between the incident light ray and the normal line is the incident angle. The reflected light is the light reflected at the interface. The angle between the reflected light and the normal is the reflection angle. Moreover, according to the law of reflection, the reflection angle was equal to the incident angle. On the diagram, it was shown that these two angles were symmetrical with the normal line as the axis, and their sizes were equal. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

The high incidence of gastroesophagus reflex disease was mainly related to the following factors: 1. [Lifestyle and eating habits: The unhealthy lifestyle of modern people has increased the frequency of gastric and esophagus obstruction.] For example, drinking too much alcohol, eating too much, eating sweets (such as sweet potatoes, sweet porridge, and sugar water), spicy food, greasy food, acidic drinks, and sour food, smoking frequently, drinking a lot of strong tea, coffee, etc. These bad eating habits are all related to the occurrence of gastroesophagus reflex disease. In addition, bad eating habits such as lying flat after a meal and eating too much before going to bed could also easily cause the disease. 2. ** Age factor **: The occurrence rate of GED in people over 30 years old is higher than that in people under 30 years old, and the peak age is 50 - 69 years old. The elderly had decreased saliva secretion, decreased chemical clearance ability, and decreased resistance to damage caused by decreased blood flow in submural capillaries. The muscle relaxation and elasticity of the esophagus wall decreased, and the gate function of the lower esophagus and the junction between the esophagus and the esophagus was weakened or even almost zero. These physiological changes made it easier to get sick. 3. ** Drug factors **: Some drugs such as theylline, beta2-adrenoceptors, oral contraceptives, calcium channel blockades, indolergic antagonist, valium, and morphines are related to the occurrence of the disease. 4. ** Disease factors **: Some diseases, such as low intelligence, sequelae of stroke, Peptic Ulcer, and surgery of the stomach and gallbladder, are related to the occurrence of the disease. Some diseases can also cause excessive abdominal fluid to form in the abdominal cavity, causing the abdominal cavity pressure to increase and cause the disease. Hiatus Hernia (HH) often occurs in combination with gastroesophagus reflex disease, which can also aggravate the condition. 5. ** Changes in physiological structure **: Pregnant women are the high-risk group of people with gastric and esophagus reflex disease. On the one hand, the diet structure changes after pregnancy, the amount of food intake increases greatly, and the burden on the stomach increases. On the other hand, the pregnancy reaction during pregnancy, frequent vomiting, can easily cause the lower esophagus constrictor to relax and cause reflex. There are also changes in the body structure of pregnant women. As the fetus grows, the pressure in the abdominal cavity will gradually increase. After the stomach is squeezed, the pressure in the stomach will increase. When the pressure exceeds the pressure in the esophagus, there will be reflex. 6. ** Mental factors **: Mental factors can cause and aggravate the symptoms of gastric reflex. The risk of developing gastric reflex in mentally fragile people is 3.8 times higher than that of other people. 7. ** Obese factors **: Obese people (whose body weight is more than 20% of their ideal weight) have a significantly higher incidence of gastric-esophagus reflex disease than people of normal weight. Body mass index (Body Mass Index = weight (kg)/height (m) 2), waist circumference, and excessive weight will make individuals more susceptible to gastric-esophagus reflex disease, erosive reflex disease, and Barrett's esophagus. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

The following is a summary of some mathematical problems related to the angle of incidence and reflection: ** 1. Angular Calculation ** 1. ** Calculating the angle of incidence and reflection from the angle between the light ray and the flat mirror ** - For example, when the angle between a ray of light and a flat mirror is 60°, the angle of incidence and the angle of reflection are calculated. - The solution: The angle of incidence is the angle between the incident light and the normal. Since the angle between the incident light and the mirror is 60°, and the normal is normal to the mirror, the angle of incidence is 90° - 60° = 30°. Since the reflection angle was equal to the incident angle, the reflection angle was also 30°. - When the incident angle increases by 10°, find the angle between the incident ray and the reflected ray. - The original angle of incidence was 30°. After adding 10°, it became 40°. The angle of reflection also became 40 °. Then the angle between the incident ray and the reflected ray was 40°+40° = 80°. 2. ** Calculating the angles of incidence and reflection in a geometric figure (involving circles and other geometric figures)** - For example, in a glass sphere that is approximately a semicircle O, where A is the diameter, there is a chandelier at point C on the semicircle O, E F A B, C O A B, the middle point of E F is D, O A = 4, there is an incident light M H, a reflected light H N, HH M = HH N = 45°, tan COH is known, and the length of ON is found (this involves using the incident angle to determine the angle relationship, and then combining the properties of the geometric figure to solve the problem). - The solution to the problem was to cross point N and make NG Ox at point G. Let NG = 3k (k>0), then OG = 4k, ON = 5k, from Ox N = 45°, GH = NG = 3k, and then find the value of k according to the known conditions such as the radius of the circle, thus obtaining the length of ON. ** 2. Proof class (often combined with the law of reflection and the relationship between geometric figures)** 1. ** In a lamp with two mirrors, when AA-B-C, the incident angle is equal to the reflection angle (1 = 2, 3 = 4) to explain the problems related to the light entering the lamp. ** - [Solution: You need to prove the transmission path of light based on the angle of incidence equals the angle of reflection and the vertical relationship between mirrors.] ** 3. Similar triangle combined with the angle of incidence and the angle of reflection ** 1. ** For example, in the graph related to the glass sphere, finding the length of the line segment (such as the length of CD) involves proving the similarity between the two. Here, the condition that the incident angle is equal to the reflection angle may be an implicit angle equality relationship, which is used to determine the angle equality of the triangle, thus proving the similarity ** - Solution: By analyzing the parallel relationship, vertical relationship, etc. in the graph, combined with the angle of the incident angle being equal to the angle of reflection, find the conditions for the similarity of the triangle, and then find the length of the line segment according to the proportion of the corresponding side of the similar triangle. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

In high school biology, the calculation of the incidence rate of genetic diseases would be involved. For example, the incidence rate of a certain genetic disease = the number of individuals with a certain genetic disease/the total number of individuals investigated for a certain genetic disease. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

The Alto Stairs was an educational institution located in the Xicheng District Beijing City. It was registered and established in the Xicheng Branch on August 8, 2012. The legal representative was Qiao Huasong. The organization's business scope included vocal music training, dance training, painting training, Go training, Taekwondo training, etc. It had an advanced school philosophy and a strong teaching force. It had rich teaching experience, a serious and rigorous teaching attitude, and a strict management system. The novel " Dream Chaser's Half Dream Residence " is equally exciting. Everyone is welcome to click and read it!

The following are some novels that involve elements of the "strange staircase": - The Spiral Stairs: Mary Rhinehart, this is his debut and representative work. The spiral staircase in the book was an important scene and key image. The story took place in a country house where Rachel, a young lady who had passed away, rented. A series of strange events happened here, such as the owner's son being shot dead, the ghost appearing late at night, the bank going bankrupt, the owner dying of a sudden heart attack, and so on. The police could not stop the supernatural incidents. Rachel decided to find out the truth, but when she entered a secret room, she encountered real fear. Greed, evil, and hatred intertwined into a web of conspiracy. - The story has elements such as dark winding corridors and stairs. In a small town, the old school building that had stood for 84 years was about to be demolished. However, on the day before the summer vacation, a boy walked into the basement of the old school building and disappeared. There were stupid things under the old school building, as well as a car that was chasing after the dead, a teacher who was talking to the fire, and a strange soldier who was stiff. An evil force spread to the entire town from the old school building, affecting the summer vacation of the last batch of students in the town. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

The audio novel " The Spiral Staircase " was broadcasted by Taiwan's Central Radio Troupe. The author was Mary Reinhardt. It was a reasoning audio novel. Its current status was complete and could be listened to for free on the relevant platforms. This was the debut and representative work of the famous American author, Mary Rhinehart. It was famous as the first bestseller in the United States and was widely known at that time. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

Here are some tips for shooting stairs: 1. ** Sitting posture ** - Sitting on the stairs and stretching: Sit on the stairs, raise your hands and stretch, and put your legs one after the other on the stairs to show your good figure and long legs. - Sitting posture, legs extended downward: Sitting sideways on the stairs, leaning back, elbows supporting the body, one leg bent, one leg naturally extended downward, can shoot the effect of long legs. - He sat up with one hand and one foot outstretched. When taking photos, he didn't look at the camera. He raised his hand above his head and stretched his feet under the stairs. His posture was natural and easy-going. - Sitting sideways with hands on the ground and feet on the opposite side: Sit sideways with hands on the ground and feet on the opposite side, showing the length of the legs while maintaining the natural upper body. - Sitting on the stairs and stretching your legs forward: After sitting down, your legs will extend to the stairs in front of you. The character will be loose and have long legs. - With one leg bent and the other leg straight, the right hand rested on the forehead. - Close your knees and open your feet to support your knees: Close your knees and open your feet to support your knees. 2. ** About squatting posture ** - Kneeling on the stairs with arms akimbo: Squat sideways naturally, kneel on the knee facing the camera, support your chin with one hand, put the other hand on your waist, and smile at the camera. - Intersecting Legs: When taking full-body photos while standing on the stairs, change your legs and cross your legs to enhance your portrait's expression. 3. ** About standing posture ** - Leaning against the railing, bending one hand and one foot: Standing by the stairs and leaning against the railing, bending one hand and one foot, making the upper body, lower body and the railing form a triangle, naturally looking good. - Standing posture using railing composition: Standing next to the railing of the stairs, shooting from the side of the railing from bottom to top, using the extension of the railing to highlight the character. - Smiling at the mirror with the railing: Hold the railing with your hand, put it gently, and smile slightly at the mirror. There is no need for too much expression. - Stand with your back against the railing and form a triangle: lean against the railing of the stairs, one hand on your head, one hand against the railing, one foot upright, one foot stepping on the first step, hand and leg forming a triangle. 4. ** Other postures and techniques ** - [Cross-legged shoulder bag with arms: Cross-legged shoulder bag with arms, legs crossed, head tilted.] - Grab the bag strap, one leg behind the bridge, and touch the railing with your hand. - Leaning against the railing, lifting up her bangs and looking at her feet. - Holding the bag, elbow against the railing, hand up high: Holding the bag, elbow against the railing, hand up high. - Elbow to knee, right hand to face, grab and hug: Elbow to knee, right hand to face, grab and hug. - Posing without looking at the camera: Create a natural beauty and pose without looking at the camera. - Use the staircase railings to take pictures of the four palaces: Use the staircase layering or railing gaps to take special photos of the four palaces. - Low-angle shot: The photographer stood at a high point and shot the model from top to bottom. The model tilted her head and lifted her hair, giving off a high-class feel. - With the staircase as the background, the model stood at the bottom of the retro staircase. The photographer shot from the bottom up to highlight the imposing scene and make the model slender. - Take photos while walking: Walk around the stairs and let the photographer take photos to capture the natural and vivid state. - [Look into the distance with your arms crossed: When shooting on the stairs, make sure that the background is simple and clean. Look into the distance with your arms crossed. Even a simple pose can be shot.] 5. ** Equipment and composition related ** - He used the Bluetooth remote control to connect to his phone to shoot remotely. The stand was adjusted to the height of his waist, and the wide-angle lens of the camera was turned on to form a perspective line on the stairs. The character maintained a distance of two steps from the stand, and his feet reached out to the camera. - The frame was raised and the angle was slightly inclined downward to form a diagonal composition to increase the sense of extension of the picture. The frame was placed in front of the guardrail and the angle was slightly inclined upward to form a guiding line to give a sense of depth. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

Here are some tips for taking pictures of stairs: - ** Sitting posture ** - He stretched his body in a sitting position, raised his hands, and placed his legs on the stairs one after another. - He sat sideways and leaned his body back. He supported his body with his elbows, bent one leg, and naturally extended the other leg downward. - He sat on the stairs with his feet in front of each other and one of his feet stretched out naturally. He could raise his hand to brush his hair. - When sitting sideways, one foot should stretch out to the lower left corner as much as possible, one foot should be raised, and the upper body should lean back as much as possible. - Sitting on the stairs to take a photo, he placed his feet in a staggered position, one on top and the other sticking out in front of the camera. His hands naturally supported the stairs, and his upper body was straight. - He sat cross-legged with his legs crossed to form a triangle. He supported his chin with one hand while the other hand hung naturally. His body leaned forward slightly. - Sitting on the stairs to take photos, he naturally raised one foot to interact with the camera. - He sat sideways on the stairs, facing the camera with one foot to the side and the other bent for his arms to hug. - ** In terms of squatting posture ** - He naturally squatted down sideways and knelt down with the leg facing the camera. He supported his chin with one hand and placed the other hand on his waist as he smiled at the camera. - Stretching his legs, he squatted sideways and leaned his elbows against the railing. - ** In terms of standing posture ** - Stand on the stairs, turn sideways to face the camera, and then walk down the stairs naturally. Let the photographer shoot from the side or angle. - He stood leaning against the railing with one of his hands and one of his feet bent, forming a triangle with the railing. - He stood beside the railing of the stairs and took pictures from the side of the railing. - His body leaned against the railing of the stairs easily and naturally. He raised one hand above his head, and the other hand leaned against the railing naturally. He stood upright with one foot, and the other foot stepped on the stairs above, making his hands and legs form a triangle. - ** In terms of dynamic posture ** - Jumping on the stairs or doing other dynamic movements allowed the photographer to capture the natural and vivid moments. - ** Interacting with the staircase elements ** - Using the handrail of the stairs, grab the handrail with one or both hands and look at the camera or into the distance. - You can stand on the side of the stairs and let the stairs be the front of the photo, then look at the camera and smile. - Use the railing of the stairs to compose the picture. For example, take a picture from the side of the railing from the bottom to the top to make use of its extension. - Take advantage of the layered feel of the stairs or take some unique photos through the gaps of the railings, such as the photos of the four squares of the stairs. - ** Other aspects ** - You can sit or lie down on a certain step of the stairs and use your hands or feet as support to create a leisurely and relaxed feeling. - Stand at the top or bottom of the stairs with your back to the camera, then walk down or up the stairs to take a back-view. - In order to create natural beauty, one could pose casually without looking at the camera. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

There are many techniques to take photos on the stairs. The following are introductions from the shooting posture, pre-preparation, shooting angle, post-editing, and other aspects: ** 1. Shooting posture ** 1. ** Sitting posture ** - He sat in a front position and stretched his back, his legs placed one in front of the other, and his hands raised. - When he sat sideways, he leaned back, with one leg bent and the other stretched down naturally. - He sat cross-legged with one hand supporting his chin and the other hand hanging naturally. His body leaned forward. - When sitting face to face, place your feet in front and back, but naturally stretch out one foot to match the action of raising your hand to lift your hair. - He sat sideways, stretched his legs, and flipped his hair. He stretched one foot to the lower left corner, raised the other foot, leaned his upper body back, and flipped his hair with his hands. - He sat on the stairs with one hand on the ground and the other on his chin. - He sat sideways and hugged his legs. He placed one foot on the side and curled the other leg up to hug it. - He sat sideways with his hands on the ground and his feet stretched diagonally. 2. ** Squatting posture ** - Naturally, he squatted sideways and faced the camera with his knees on the ground. He supported his chin with one hand and placed the other hand on his waist. 3. ** Standing posture category ** - He stood leaning against the railing, one of his hands and feet bent, and his body formed a triangle with the railing. - Standing beside the railing, he took pictures from the side of the railing. - He stood with his feet in front of him and his back against the staircase, facing sideways. - One of his legs stood still while the other bent his knees and stepped to the side. - Cross-legged, hand-held staircase. 4. ** Others ** - When climbing the steps, put your hands on your knees, put your hands in your pockets, lean back, touch your knees with one hand, put your hands on your hips, or put your knees with one hand, do other actions with the other hand, and look up with your arms crossed. - She casually brushed her hair at the stairs. ** 2. Initial preparations ** 1. ** Style confirmed ** - First, he decided on the style of the shoot, such as fresh, industrial, dark, movie, magazine, and so on. Then, he matched the clothes according to the style and found a suitable staircase scene. For example, the style of the movie magazine could choose a yellow-based staircase scene. The model would wear blue jeans with a combination of blue and yellow. The overall color would be simple and high-class. 2. ** Device Usage ** - He could use the phone's super wide-angle function and portrait mode to shoot. ** 3. Shooting angle ** 1. ** Super wide angle + upshot ** - If the stairs were straight and long and the background color was uniform, the model would walk down the stairs. One or two steps would be reserved at the bottom, and the photographer would shoot from a low angle. The character would appear tall and thin. - If the background of the stairs was messy, the model could sit in the middle of the stairs with her legs crossed and stretched forward. The same low angle was taken to increase the depth and space of the photo. 2. ** Portrait Mode ** - It can be used in situations where the background of the stairs is messy. It can blur the background and highlight the characters. For example, when the model leaned against the wall and looked at the camera, the three-point composition could be used to blur the scene outside the character, making the photo more artistic. 3. ** Other angles ** - Low angle shooting, such as the photographer shooting at the lowest angle of the stairs, can stretch the leg lines of the portrait, the picture is beautiful. - The camera was at the highest angle of the stairs, and the portrait was in the middle of the stairs. It was suitable for people who didn't like to look at the camera. - Find a staircase against the wall and shoot parallel to the staircase. - Shooting along the natural lines of the handrail could enhance the extension and penetration of the picture. ** 4. Later editing ** 1. ** Picture composition adjustment ** - He imported the "Awakening Picture" APP, clicked "Adjusting" and "Picture Composing" to cut the picture, remove the debris, and show the main body. 2. ** Picture parameters adjustment ** - In the "Adjustments', adjust the brightness, contrast, and other parameters to make the exposure normal. - He clicked on [Portrait][Automatic Beauty] to remove the facial blemishes. 3. ** Add filter ** - He clicked on "Filters'"and" Scenery ", selected" Pear Cloud ", and set the level to 38. Then, he used" Advanced Editor "to add other filter, such as" GT3 "(Level 24) and" KCP2 "(Level 53) in the" Film "module. 4. ** Special Effect Added ** - He clicked "Special Effects" → "Rejuvenation", selected "Scratch 1", set the degree of clarity to 61, and added a "Dark Corner" with a strength of 10 to increase the atmosphere. 5. ** Text decoration ** - He clicked on [Stickers] and searched for [Magazine Text] to choose the appropriate color of the text decoration, or clicked on [Text] to enter the text and edit the color and font. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>