Electronics

Prynt Case: the next gen of Polaroid for smartphones prints instant photos from your smartphone

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PryntThere is a French company that has developed a new smartphone case that will print out a small, hard copy of photos you take with your smartphone. The printer is connected to the smartphone via Bluetooth and prints out the photos in 50 seconds.

The case will be first available via Kickstarter for $99 by early next year (2015).

I think this is pretty awesome. Check out the video about Prynt below.

Prynt’s New Photo Printing Case

Transmitting Antennas

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The following was taken from a research work submitted for my ECE 119 – Transmission Media class in 2006 at University of St. La Salle, Philippines.

Most practical transmitting antennas are divided into two basic classifications, HERTZ (half-wave) ANTENNAS and MARCONI (quarter-wave) ANTENNAS. Hertz antennas are generally installed some distance above the ground and are positioned to radiate either vertically or horizontally. Marconi antennas operate with one end grounded and are mounted perpendicular to the Earth or to a surface acting as a ground. Hertz antennas are generally used for frequencies above 2 megahertz. Marconi antennas are used for frequencies below 2 megahertz and may be used at higher frequencies in certain applications.

A complete antenna system consists of three parts:

  1. The COUPLING DEVICE
  2. The FEEDER
  3. The ANTENNA

The factors that determine the type, size, and shape of the antenna are:

  1. the frequency of operation of the transmitter,
  2. the amount of power to be radiated, and
  3. the general direction of the receiving set.
Half-Wave Dipole Antenna
Half-Wave Dipole Antenna
Quarter-Wave Antenna
Quarter-Wave Antenna

Image Credit: TeleDataSchool.com