Tag: led

  • Sparrow Massacre: How a Well-Intentioned Plan Led to Disaster

    Sparrow Massacre: How a Well-Intentioned Plan Led to Disaster

    Once upon a time, in 1958, Mao Zedong ruled China as its leader. He decided to get rid of sparrows because he thought they were harmful. He believed that sparrows were eating too much grain, causing problems for the country.

    Sparrow Massacre

    To eliminate sparrows, Mao organized a campaign where people were encouraged to kill them. This led to the creation of the “Sparrow Army,” and the government even offered rewards for killing sparrows. People used various methods like beating drums to scare the birds and hunting them down.

    Mao’s decision came from the belief that sparrows were pests, and he wanted to protect the country’s crops. He thought that sparrows ate a lot of grain each year, which could feed thousands of people. So, he ordered their destruction.

    The campaign against sparrows was intense. People destroyed their nests, eggs, and caught them in nets. Many were even shot with guns. As a result, the sparrow population decreased rapidly.

    However, killing sparrows had unintended consequences. Without sparrows to eat insects, pests multiplied, destroying crops even more. This led to a severe famine in China a few years later, causing millions of deaths.

    Despite having enough food in government storage, people suffered because authorities didn’t distribute it properly during the famine. The famine of 1961-62 was a tragedy, causing millions to perish due to starvation.

    Mao’s decision to eradicate sparrows ended up causing more harm than good. It disrupted the ecosystem, leading to a devastating famine that took many lives. It’s a reminder of the importance of considering the consequences of our actions on the environment and society.

  • Meizu 21: Featuring SD8 Gen 3 Chip, 200MP Camera, RGB LED Ring, and More!

    Meizu 21: Featuring SD8 Gen 3 Chip, 200MP Camera, RGB LED Ring, and More!

    Meizu recently unveiled its latest flagship smartphone, the Meizu 21, at the 2023 Autumn Unbounded Ecological Conference in China. The phone boasts improvements in design, camera, and battery over its predecessor. Let’s explore the key features of the Meizu 21.

    Meizu 21

    The Meizu 21 maintains a sleek design, with a flat frame body reminiscent of both the Galaxy S series and iPhones. It is impressively thin at 7.9mm and weighs 198g. One notable addition is the RGB LED ring light around the camera, serving various purposes, including notifications.

    Powering the Meizu 21 is the Qualcomm Snapdragon 8 Gen 3 chipset, coupled with LPDDR5x RAM and UFS 4.0 storage. To ensure efficient heat dissipation, the phone features a cooling area of 37345mm².

    The device sports a 6.55-inch centered punch-hole flat OLED screen provided by Samsung Display. The FHD+ panel supports HDR10+, offers a 120Hz refresh rate, 1920Hz PWM dimming, and reaches a peak brightness of 1800 nits.

    The Meizu 21 boasts an impressive camera setup. On the front, there’s a 32MP Samsung S5KJD1 selfie camera. On the rear, a vertically aligned triple camera system includes a massive 200MP Samsung S5KHP3 primary sensor with OIS, a 12MP Samsung S5K3L6 ultrawide unit, and a 5MP Samsung S5K5E9 depth sensor.

    The phone runs on the Flyme 10.5 operating system based on Android 14, featuring the Aicy personal assistant powered by GPT. It comes with an IP54 rating, dual stereo speakers, an in-screen fingerprint sensor, dual SIM support, WiFi 7, Bluetooth 5.4, GNSS, and NFC.

    A robust 4,800mAh battery fuels the Meizu 21, supporting 80W wired charging for quick and efficient power replenishment. The Meizu 21 is available in three configurations:
    – 8GB + 256GB for ¥3,399 (~$480)
    – 12GB + 256GB for ¥3,699 (~$520)
    – 12GB + 512GB for ¥3,999 (~$565)

    The phone comes in Unbounded Black, Smart Purple, Sharp Green, or Meizu White color options. Pre-orders are open, and it is set to go on sale from December 5.

  • Are LED lights really harmful to the human body?

    Are LED lights really harmful to the human body?

    LED lights have become increasingly popular in various settings, ranging from cars to homes, primarily due to their energy efficiency and long lifespan. These lights emit a bright and focused illumination, making them a preferred choice for many. However, concerns have been raised about the potential impact of LED lights on our bodies, particularly on our eyes.

    LED lights

    It is important to clarify that LED lights themselves do not contain aluminum gallium arsenide or any other harmful material. LED technology utilizes semiconductors made from materials such as gallium arsenide, but these materials are encapsulated within the LED itself and do not pose a risk when used in lighting applications.

    While LED lights do emit blue light, which has a shorter wavelength and higher energy compared to other colors in the visible spectrum, the idea that they cause immediate eye damage is incorrect. Prolonged and direct exposure to blue light can have an effect on the retina over time, potentially leading to a decline in visual performance. However, it is crucial to note that this damage does not occur suddenly, and the level of risk depends on the duration and intensity of exposure.

    To mitigate potential risks, experts recommend using filters or diffusers on LED lights to reduce the amount of blue light reaching the eyes directly. This can help minimize the potential harm associated with long-term exposure. Additionally, it is advisable to ensure that rooms are adequately illuminated with natural sunlight whenever possible, as sunlight can help counterbalance the effects of LED lights.

     

    When purchasing LED lights, there are a couple of factors to consider to minimize potential harm. One such factor is the Color Rendering Index (CRI), which measures the light’s ability to accurately render colors. Opting for lights with a higher CRI, such as 97, can ensure better color accuracy and potentially reduce eye strain.

    Another consideration is the color temperature of the light. Lights with a color temperature of 2,700 degrees Kelvin or below are generally considered less harmful to the eyes. By selecting warmer color temperatures, the amount of blue light emitted can be reduced.