Bài đăng

What is noise level? What is the maximum intensity that humans can hear in dB?

Hình ảnh
1 What is noise level? Loudness is the sound intensity level of noise, measured in units of dB (decibels) . Noise is unwanted , annoying sound to the listener. Sound emitted by factories, vehicles, engines, airplanes or household appliances such as: ,, ,… is considered noise. In other words, sound that has no value emitted from the surrounding environment or a good sound but emitted at the wrong time , does not match the listener's wishes is also called noise. 2 Effect of noise level Every day, if we are regularly exposed to many loud sound sources, it will greatly affect the process of working, resting as well as health. Hearing effects: Some sources of noise can exceed the safe hearing threshold of the ear such as drills, horns, engines, airplanes, etc. Frequent exposure to these types of sounds will cause damage to hearing. tympanic membrane, hearing loss, decreased sensitivity to sound of the ear. Nervous effects: Sound with high intensity can affec...

How to choose clean cooking oil and use safe oil

Hình ảnh
The harm of dirty oil and how to recognize it? Cooking oil is usually made from essential oils of plants such as peanuts (peanut), sesame, canola, olive or animal fats such as pigs, chickens, cows… These cooking oils are registered and controlled. by the health food regulatory authorities. Vegetable oil However, there are some profit-seeking establishments that have processed oil from kitchen waste, sewers, animal skins… this oil is very toxic and has appeared on the market recently. A private facility in China cooks cooking oil from kitchen wastewater Studies have shown that if ingested, this oil will cause mild to severe poisoning, cardiovascular complications, high blood pressure and cancer. The person who prepares this oil when frying at a temperature of over 180 0 C, if inhaled, the gas can cause headaches, dizziness, nausea, abdominal pain, shortness of breath… It is dangerous, but it is difficult to identify dirty oil because the oil is odorless ...

Suggest fun spots, check-in Tet in Saigon can not be ignored

Hình ảnh
1 Lunar New Year amusement park not to be missed in Saigon These are the most popular tourist attractions in Saigon, ranging from popular entertainment games to high-class resort services. What are you waiting for? Let's explore! Dam Sen Cultural Park Dam Sen – Wonderful world , the legendary slogan that when it comes to surely anyone who is not "Saigon" is too familiar with this famous park. With 5 types of focus services are: Games, events, scenes, birds and animals, and diverse and rich cuisine. Dam Sen is still an ideal place to have fun every spring for all families and young people after more than 40 years of construction and development. Suoi Tien Cultural Tourist Area Suoi Tien is one of the top interesting destinations on the upcoming Tet holidays. Dubbed the Land of Four Spirits with Long – Lan – Quy – Phung, the place where peace and happiness converges , always brings a lot of luck to your family. You and your loved...

How to check free space on iPhone

Hình ảnh
Checking the free space on the iPhone helps to avoid the situation that the iPhone is full of memory due to installing many applications, saving files, … causing slow, frozen, jerky – lag… Implementation steps: Step 1: From your iPhone, go to Settings. Step 2: Go to General Settings. Step 3: Scroll down and select Storage & iCloud Usage. Step 4: Here, you will see how much memory the iPhone has used and how much is available (available is free) . My example is 9.7 GB used up and 2 GB of internal memory available . In case you want to know in detail how much of your iPhone's internal memory is occupied by each application, then click on Manage Storage. After clicking, you will know exactly which applications are taking up the most memory to process. For example, for me, there are two things that are taking up the most memory, which are Photos and Facebook, which means that if I reduce my virtual life, I will save a lot of internal...

Tips for handling fruit sap, fruit latex quickly and simply

Hình ảnh
1 Remove jackfruit sap Jackfruit sap, also known as jackfruit latex, will stick on your knife when you cut jackfruit. If not removed cleanly, this jackfruit plastic gets stuck on the knife not only making the knife dirty but also making it difficult to cut food. To clean the knife, you just need to use a little cooking oil on a towel , and wipe the knife, then rinse with clean water. If jackfruit sap accidentally gets on your clothes, just use half a lemon, then rub it on the affected area, then rub it with the solution and rinse it off several times with cold water. You can also rub your hands into the rice before cutting jackfruit and after eating jackfruit, then wash your hands with warm water. This way also helps you significantly reduce the stickiness of jackfruit resin. In addition, you can also use kerosene to remove the jackfruit latex from your hands. 2 Remove sapodilla resin To remove sapodilla stains, you just need to prepare a lemon , then rub it on the ...

3 ways to make a simple stylus from familiar materials

Hình ảnh
1 Identify the touchscreen type on your device Not all screens of , , tablets and even stylus can be used. Therefore, please refer to the Specifications of the device you are using to learn more about whether the device can use a stylus or not? In addition, the stylus is also divided into 2 groups to be compatible with different screen characteristics such as: type of pen for screen and the type of pen used for resistive (or infrared) screens. 2 3 ways to make a simple stylus from familiar materials With just a few simple steps, you can immediately make a stylus to use through 1 of 3 ways that Dien May XANH will reveal right away: Applicable with capacitive touch screen Method 1: With a sponge Preparation materials: Clean sponge: 1 piece Ballpoint pen: 1 stick, with removable tip and clear plastic (easy to see) small Implementation steps: Step 1 : Cut a piece of sponge corresponding to or slightly larger than the diameter of the ballpoint pen tip. You ca...