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Ultrasonic cleaning machine is only a dozen centimeters high because of ordinary lamps
The weather was hot these days and the mosquitoes began to "crazy" again. Ultrasound is similar to the hot sale of various mosquito repellent products on the market. What is unexpected is that there are various mosquito repellent softwares on the Internet!
In the Apple App's application supermarket search for the word "mosquito repellent", jumped out of 9 mosquito repellent software, including a lot of fee-based software, expensive $2.99, and such high prices did not stop consumers, each software There are dozens or even hundreds of people rating scores.
In order to verify the effect of the mosquito repellent software, the reporter randomly downloaded two softwares, which were installed on their own laptops and mobile phones.
The software name on the laptop is "Electronic mosquito repellent km300". After the download is complete, when you click Start, a simulated animated big mosquito jumps on the computer desktop.
The reporter selected the “Start” function and turned the volume up. At this time, the computer speaker heard the rhythmic sound of “step, step, step”; and in the “step” sound, it was faintly heard that there was a similar metal. The sharp sound of friction is intermittent. After listening to it, the reporter obviously felt that the ears were not very comfortable, and quickly pressed the pause button.
Is this sound able to drive away the sound of mosquitoes? According to the “Help” prompt of the menu, the reporter clicked on the corresponding service website of the software, but did not expect to click into it, it turned out to be a commercial promotion website, which listed the promotion links of some commercial brands.
So, what is the “Enable Smart Broad Spectrum Repellent” launched in the software menu? After clicking through the reporter, the software was found to require a fee of 30 yuan to be used. This technology is said to be "mainly capable of letting the computer emit multiple segments of sound, which can better dispel various kinds of mosquitoes."
Subsequently, the reporter downloaded a software called "Mosquito Repellent V1.1" on the mobile phone. The software said in the introduction, this is an ultrasonic mosquito repellent software, as the frequency is getting higher and higher, the sound is getting smaller and smaller, so small that it can be heard beyond the range that people can hear, and the mosquito can be given to a frequency. Eliminate it.
At the same time, the manual shows: When the software is turned on, the mobile phone screen will always emit blue-violet fluorescence. When you sleep, just place the mobile phone at a distance of 2 meters and 1 meter away from you, you can sit back and relax.
After the reporter installed and opened the software, he also obviously heard a sharp metal-like sound. According to different frequencies, the sound became more and more sharp, but after adjusting to "high frequency", no sound could be heard.
In order to verify the effect, the reporter deliberately opened the screens and mosquito nets in the home in the evening to "make mosquitoes into account." After more than an hour of waiting, two mosquitoes finally got into the net.
In order to prevent mosquitoes from fleeing, the reporter quietly closed the mosquito net and brought in laptops and mobile phones to open the mosquito repellent software, but the imaginary mosquitoes were harassed by the mosquito repellent, so the situation of flying around did not appear, two mosquitoes It is still "quietly" adsorbed on the mosquito net.
In order to verify the effect of "mobile phone mosquito repellent", the reporter put the mobile phone at the end of the bed, and then gradually fell asleep. After more than two hours, the reporter was awakened by mosquitoes and found that a total of three bags were stolen, and the mobile phone was “dying out” because the mosquito repellent software was too power-hungry, and the mobile phone was almost shut down.
In order to repel mosquitoes for children, a colleague of the reporter has tried mobile mosquito repellent software and portable electronic mosquito repellent. The result is not reliable. The mosquitoes are not afraid of electronic mosquito repellents, and the children are still bitten.
So, what is the mobile mosquito repellent software to repel mosquitoes? In yesterday’s interview, the developer of a “mobile phone repellent software” gave two principles of “mosquito repellent”.
The study found that all the scorpions are female mosquitoes, because the female mosquitoes need supplemental nutrition within one week after mating to produce ovulation, but during this period, the female mosquitoes can no longer mate with the male mosquitoes, otherwise it will affect production and even life. Therefore, the mother mosquitoes try their best to avoid the male mosquitoes. Some ultrasonic mosquito repellents simulate the ultrasonic waves of various male mosquito wings. When the female mosquito hears the above sound waves, it will immediately escape, and the ultrasonic wave will achieve the effect of repelling the mosquito.
The mosquito repellent software simulates the ultrasound that emits bats, because "bats are natural enemies of mosquitoes. It is generally believed that mosquitoes can recognize and avoid the ultrasonic waves emitted by bats."
Does mosquito repellent software have any effect? Dr. Wu from Nanjing Zhongshan Hospital said that it is feasible from the medical point of view to use mosquitoes to repel mosquitoes. The ultrasonic imaging objects used by them are male mosquitoes that are hatched by female mosquitoes during pregnancy. Second, mosquitoes are afraid. Natural enemy bat.
However, it needs to be clarified that, according to its understanding, it is impossible to generate ultrasonic waves that make mosquitoes uncomfortable through computers or mobile phones, because the frequency of sounds that can be heard by human ears does not exceed 20KHz, while bats, male mosquitoes, etc. The sounds emitted are ultrasonic waves, in which the bat emits ultrasonic waves up to 300 kHz.
In other words, in order to play a role in mosquito repellent, it is necessary to have a special playback device to play the ultrasonic wave. From a technical point of view, computer speakers and mobile phones are not supported at all.
In addition, different mosquitoes have different sound waves. One software can only imitate one kind of sound wave, and it is useless for other mosquitoes with different sound waves. "For example, mosquito repellent software made in the USA has no effect on mosquitoes in Nanjing."
In addition to the "high-tech" mosquito repellent software, mosquito killers and mosquito killers have also begun to sell well. So, are these mosquito repellent products effective?
In a shop in Taobao, the boss focused on introducing a photocatalyst mosquito killer to the reporter. The price is as high as 100 yuan, which is said to be an upgraded product. From the picture, the mosquito killer is cylindrical, the upper layer is a black hat, there are several tubes underneath, emitting light blue light, under the tube is an electric fan, there is a net under the electric fan a tube that is used to hold the bodies of the caught mosquitoes.
The boss said that the photocatalyst mosquito killer is a kind of mosquito trapping machine. Ultrasound firstly uses the light to attract the mosquitoes, and then relies on the airflow to suck the mosquitoes into the mosquito storage room to dry.
One user commented that the next morning I did see a lot of mosquitoes. But he used it in night shifts in the suburban factories; more home users said that one or two mosquitoes could be caught overnight. "It's a bit of an effect, but the effect is not very obvious."
The reporter learned that although it is called "photocatalyst mosquito killer", it is actually a mosquito repellent lamp. It is sold in many supermarkets in Nanjing, mostly in blue plastic appearance, and the price ranges from 10 to 20 yuan.
The reporter bought a donkey and put it in the room. Overnight, the reporter was bitten out of two bags, but there was no mosquito in the mosquito lamp, and there were several black flying insects.
The reporter got it. The mosquito repellent lamp is strictly not a mosquito repellent, but a mosquito trap. The inner wall of the tube is coated with rare earth phosphor, which can attract mosquitoes and other flying insects, but unfortunately, because ordinary lamps are only a dozen centimeters high, mosquitoes cannot be sucked. Chen Yu Song Shifeng
Mosquitoes are afraid of light, but they don't like the light too dark. They like to suck blood in low light. Therefore, people wearing dark clothes and dark skin will attract mosquito bites.
Whether a person is a mosquito, mainly depends on how strong his or her scent is, and has nothing to do with blood type.
Sweat is also a signal for mosquitoes to forage, so people with more sweat are also targets of mosquitoes. Therefore, young people with heavy movements, fat people, and people with heavy breathing are more likely to be bitten by mosquitoes.
The reporter noticed that compared with the photocatalyst mosquito killer, some mosquito repellent rings and mosquito repellent stickers have also been loved by many people.
However, experts warn that most mosquito-repellent stickers, anti-mosquito oils, and anti-mosquito bracelets on the market are used to repel mosquitoes by emitting certain odors, but because of the aromatic substances contained in essential oils and aromatic bracelets, there are certain Stimulating effect, prolonged contact with the human body for a long time, will stimulate the respiratory tract, especially those with asthma and airway allergy. In addition, the anti-mosquito paste is applied to the skin surface and is also prone to skin irritation.
The reporter saw in several major supermarkets yesterday that some brands of toilet water were marked with “4.5% mosquito repellent content” on the outer packaging, while others were marked with “5% DEET”.
According to environmental experts, DEET and mosquito repellent are all repellents. DEET is a widely used insecticide. Mosquito repellent is a broad-spectrum and highly effective insect repellent. It is characterized by lower toxicity and less irritation. In addition to infants and young children should not be used in large quantities, adults can use it with confidence. As for the mosquito repellent effect, it varies from person to person.
So how do you effectively repel mosquitoes? Experts recommend using the "old three": mosquito coils, mosquito nets, toilet water. (Text / Yangzi Evening News)
For more details, please visit: Ultrasonic, Ultrasonic Cleaner, Washing Machine, Changzhou Mickey Cleaning Technology Co., Ltd.