Position. To view your phone in portrait mode loosen knob one or two slide the holder until the width fits your upright phone tighten. The knob.

WeatherTech MADE IN THE USA – CupFone is designed and manufactured in America by WeatherTech and features a Lifetime Limited Warranty.

Music Experiments for Kids A simple paper cup phone works by transmitting sound vibrations along a tightly-pulled string. The bottom of each cup serves as a combination "microphone" and "speaker," picking up sound vibrations on one and and reproducing the sound at the other.

CupFone can fit most standard sized phones on the market sized between 2 3/8" to 3 3/8" wide with a depth of 9/16". CupFone also holds your phone securely while allowing for simple one-handed removal.

One stacked inside the other so you can find the right fit for your vehicle's cup holder. Simply use this knob to adjust for your phone's eyes. And this knob to adjust tilt.

To view your phone in landscape mode loosen. Both knobs one and two slide the holders until the width fits your horizontal phone tighten. The knobs adjust the tilt with knob 3. To.

Until it reaches your friend's ear. Okay let's try another experiment. Stand a little closer to your friend. So that the string hangs loose between the cups.

Pull the string taut and have one person speak into one of the cups while you listen through the other. The cups can be used to communicate over distances of up to 100 feet.

tin can phone A tin can phone is a type of acoustic (non-electrical) speech-transmitting device made up of two tin cans, paper cups or similarly shaped items attached to either end of a taut string or wire.

Other common cup holder sizes feature a diameter of 2.5 inches, 4 inches, and adjustable sizes between 2-5 inches.

Cup holders aren't just essential for our constant hydration, they're also the source of our psychological well-being on the road: Clotaire Rapaille, a cultural anthropologist, has theorized that having warm liquid close by in the car brings our subconscious back to the safety of early childhood, and the food-love of ...

A phone stand is essentially an object that is used to prop up a phone or any mobile device on a hard surface. It makes it easy to operate the device, watch videos, charge, or even browse while keeping the device clean and safe.