ã€Global Science and Technology Report】 Summer trip, in addition to bathing suits and sunscreen, will pack a lot of technology products in the bag: mobile phones, cameras, and sometimes also bring the tablet. Many accessories are also essential items: conversion plugs, mobile power, memory cards, etc.. In addition to these commonly used items, there are some novelty objects that are worthy of people to travel with. They may bring a unique experience to the travel. The French "Le Figaro" has selected four high-tech products that are suitable for travel.
Wireless speaker
Nothing is more lively than music, so bring a wireless speaker and play your favorite songs anytime and anywhere, which will undoubtedly make the trip more interesting. In summer, people often like to play on the beach or by the pool. Waterproof models are more popular during the season. The JBL Pulse 3 produced by the well-known brand JBL is an ideal product. In addition to its waterproof function, the speaker is equipped with 3 speakers to ensure loud sound in all directions. It can also use the body's LED modules show custom lighting effects. Another cost-effective wireless speaker is Philips's Spin 360 Max, which is also suitable for use in various situations. It can also send high-quality, high-volume music to all directions, and can also be used as a mobile power source to charge other devices when necessary.
2. Portable photo printer
The essential part of the journey is to use the camera to record what you see and hear, family photos, portrait photos, landscape photos, etc.... If you can't share it with others, what is the significance of taking photos? At this time, bring a mini photo printer to meet this need. Sprocket from HP is a good choice. The mini body weighs only 172 grams and can be connected to a smartphone without a Cable. It takes only 30 seconds to print the photos. The supporting application can not only upload photos to social networks, but also to photos. Make simple edits, such as adding filters and frames. Another ideal model PhotoBee function is similar to the former, supporting the application function is somewhat different, support for generating video and other functions.
3. E-book reader
For lovers who love to read, it's no small trouble to bring your favorite novels on the trip. Why not just bring a portable e-book reader? This device can store hundreds of books, can meet the reading needs of up to several weeks, the most important thing is that these "books" add up to even lighter than a thin novel. French manufacturer Bookeen's Nolim has 8G of memory, supports USB connection and Wi-Fi download, can store more than 5,000 books, the body shell is made of silicone material, do not worry about breaking. Nolim, like other e-book readers on the market, is equipped with an ink screen that restores the visual experience of a real book page. Those who want to read by the pool or on the beach can choose the waterproof Kobo Aura H2O. This model can also store more than 5,000 books, excellent screen brightness to meet the reading needs of any environment.
4. Remote control drone
Holidays are so long, it is simply a waste of vacations to drive a drone that is hot nowadays, and to experience the fun of aerial photography! In the field of aerial drones, the Spark produced by the well-known manufacturer DJI is due to its excellent image quality. Respected by aerial enthusiasts. Spark can be remotely controlled via gestures. The body is compact and lightweight, and can even be stuffed into the pockets of pants. It is loved by people who have requirements for portability. Zero-controlled Dobby drone is also one of the best in this field. It weighs 200g and has a longest flight time of 9 minutes. It is equipped with a 13MP HD camera and supports up to 30fps 4K HD video capture. Complete the 360-degree rotation and follow the subject. (Internship Editor: Chen Minghao Reviewer: Yiyi Zhao)
Satellite broadcasting has the characteristics of wide frequency band, large capacity, stable and reliable performance, wide coverage and suitable for various services. It has become the main means of transmission for radio and television. The performance of satellite ground receiving antenna is directly related to the GH/T value of satellite ground receiving equipment, which determines the viewing quality of satellite broadcasting and TV programs. Therefore, the right choice of satellite receiving antenna is an important premise and guarantee of satellite receiving. Satellite ground receiving station basically chooses two kinds of antenna, namely parabolic antenna (feedforward) and cassegrain antenna (feedback). Parabolic antenna consists of a rotating-symmetric paraboloid, that is, the electromagnetic wave reflection surface and the feed surface, the feed surface in front of the paraboloid
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