WattUp combats this problem with a type of beam-forming technology. That Bluetooth connection is used to focus a tight cone of electromagnetic waves on the target, and it can even track the device and recalibrate as needed. A standard Qi wireless charger is about 90% efficient, but Energous claims it can hit 70% at much greater distances.
Flash memory cards for digital cameras are now absurdly cheap. A 64GB SD card can be bought online for around Â£30. Thatâs enough space to store 5,000 raw files produced by a typical DSLR â or upwards of 30,000 JPEGs. These cut-price cards come with a caveat, though.lash memory cards for digital cameras are now absurdly cheap. A 64GB SD card can be bought online for around Â£30. Thatâs enough space to store 5,000 raw files produced by a typical DSLR â or upwards of 30,000 JPEGs. These cut-price cards come with a caveat, though.
A Secure Digital (SD) card is a small data storage device that can be used with digital cameras and camcorders, MP3 players, cell phones, tablets and computers.To find the best SD card for you, consider what size and storage capacity you need. SD cards come in a variety of sizes.You'll need one that fits the device you're using and the type of card reader that's built in. SD, SDHC (SD High Capacity) and SDXC (SD Extended Capacity) memory cards are all 24 mm x 32 mm x 2.1 mm.D cards come in a variety of sizes. You'll need one that fits the device you're using and the type of card reader that's built in. SD, SDHC (SD High Capacity) and SDXC (SD Extended Capacity) memory cards are all 24 mm x 32 mm x 2.1 mm.