September 15-25 this year is the National Science Popularization Day, with the theme of "Improving the Scientific Quality of the Whole People and Working Together to Build a Science and Technology Power", aiming to build a science and technology power by 2035. This National Science Popularization Day will be aimed at college students, young scientific and technological workers, civil servants and the general public, and carry out multi-level and focused cutting-edge science popularization. So, what interesting popular science knowledge do you know in daily life? Today, let me take a look at the scientific secrets hidden in your daily life with you, so that the seeds in your heart can take root and sprout.
1. Chemistry lab in the kitchen
Walking into the kitchen, have you ever thought that there is actually a miniature chemistry laboratory hidden here? The process of cooking food is a wonderful chemical reaction. For example, when baking bread, yeast reacts with the sugars in the flour and releases carbon dioxide gas, which makes the dough expand and fluffy, which is the magic of fermentation. When the oil is hot when stir-frying, the ingredients are put into the pot, and there is a "swish" sound, which is the instant vaporization of the water and the overflowing fragrance, which is undoubtedly a wonderful performance about the change of temperature and state of matter.
Second, the physical world in the refrigerator
When you open the refrigerator door, a chill greets you, and behind this is the wisdom of refrigeration technology. The refrigerator works through a compressor to compress the refrigerant into a high-pressure and high-temperature gas, then dissipates heat into liquid through the condenser, and finally absorbs heat through the expansion valve to achieve cooling. This process is like building a low-temperature haven for food, slowing down the activity of microorganisms and extending the shelf life of food. The next time you pick up food from the fridge, think about it, there is a silent dedication to physics behind this!
3. The art of spinning in the washing machine
In the washing machine, the clothes dance with the rotation of the drum, which is not only a cleaning process, but also a demonstration of the principles of physics. Centrifugal force causes water molecules to be flung out of the garment, while detergent acts as a little cleaning guard, breaking up the stain and causing it to run away with the water. Modern washing machines also incorporate intelligent sensing technology, which automatically adjusts the amount of water and washing time according to the weight of the laundry and the degree of dirt, which is energy-saving and efficient, which is the perfect integration of technology and life.
Fourth, the magic of smart home
Walking into a smart home is like stepping into a world full of magic. With a gentle call from the voice assistant, the lights turn on, the curtains slowly open, and the air conditioner automatically adjusts to the most comfortable temperature. All this is supported by technologies such as the Internet of Things and artificial intelligence. Smart home not only makes life more convenient, but also learns your living habits through data analysis and provides you with personalized services. In this small space, technology is quietly changing the way we live.
Fifth, the scientific way of green travel
Getting out of the house and choosing to ride or walk is not only a healthy lifestyle, but also an environmentally friendly scientific practice. Every time you press the bicycle pedal, it is a contribution to energy conservation and emission reduction; With every step you take, you reduce your carbon footprint. The popularity of electric vehicles and solar charging stations has pushed the concept of green travel to a new height. Science tells us that protecting the environment starts with me, starting with every green trip.
6. Tips for household cleaning
When cleaning, add a little white vinegar to clean water to wipe the furniture, which can not only remove stains, but also sterilize and disinfect, which is the use of acetic acid in vinegar. The washing machine regularly uses the "air wash" mode and adds a small amount of disinfectant, which can effectively prevent the growth of bacteria, keep the clothes clean, and protect the health of the family.
7. Daily practice of energy conservation and emission reduction
Switching to LED bulbs, although the initial investment is slightly higher, can significantly reduce electricity bills in the long run, as LEDs are much more energy efficient than traditional bulbs. When using air conditioners in the summer, the temperature is set at around 26°C, which is both cool and energy-efficient, based on the balance between human comfort preferences and energy consumption.
8. The fun of parent-child science popularization
On the weekends, do hands-on science experiments with your kids, such as making rainbow bottles out of food coloring and water, observing the growth of plants, or exploring the mysteries of magnetism with magnets. These simple activities not only enhance the parent-child relationship, but also stimulate children's interest in science, and cultivate their observation and creativity.
National Science Day is not only a popular science activity, but also an opportunity to awaken curiosity and stimulate the desire to explore. Every part of life contains the mysteries of science, waiting for us to discover and understand. (Information source: Xinhuanet Picture: AI generated)
What other interesting popular science knowledge do you know about daily life? Welcome to leave a message to add!