Pegasus Research Consortium

Now you can levitate liquids and insects at home

QuotePress release issued: 15 August 2017

Levitation techniques are no longer confined to the laboratory thanks to University of Bristol engineers who have developed an easier way for suspending matter in mid-air by developing a 3D-printed acoustic levitator. This new technique, published in Review of Scientific Instruments, could be applied to a range of applications, including blood tests.

SOURCE:

http://www.bris.ac.uk/news/2017/august/acoustic-levitation.html


TinyLev: A multi-emitter single-axis acoustic levitator

ABSTRACT:

QuoteAcoustic levitation has the potential to enable novel studies due to its ability to hold a wide variety of substances against gravity under container-less conditions. It has found application in spectroscopy, chemistry, and the study of organisms in microgravity. Current levitators are constructed using Langevin horns that need to be manufactured to high tolerance with carefully matched resonant frequencies. This resonance condition is hard to maintain as their temperature changes due to transduction heating. In addition, Langevin horns are required to operate at high voltages (>100 V) which may cause problems in challenging experimental environments. Here, we design, build, and evaluate a single-axis levitator based on multiple, low-voltage (ca. 20 V), well-matched, and commercially available ultrasonic transducers. The levitator operates at 40 kHz in air and can trap objects above 2.2 g/cm3 density and 4 mm in diameter whilst consuming 10 W of input power. Levitation of water, fused-silica spheres, small insects, and electronic components is demonstrated. The device is constructed from low-cost off-the-shelf components and is easily assembled using 3D printed sections. Complete instructions and a part list are provided on how to assemble the levitator.

SOURCE:

http://aip.scitation.org/doi/full/10.1063/1.4989995

Youtube Video:

TinyLev small

https://www.youtube.com/watch?v=QuIZq_U6EoE


Instructions Here along with BOM:

http://www.instructables.com/id/Acoustic-Levitator/

Whoops hit reply instead of preview and forgot to add my own comment!

This looks like a dandy little project to carry out that won't break the bank.  I've posted this for anyone interested in such area's such as acoustic levitation.  At least if we have a thread here on this device it's easy to find and add to!

I've already told my superior at work that this is the next sample I want to build and thee superior seemed fine with it... now the time to do it is the problem GROAN :D

All the best!

Soma

Babylonian tablet Plimpton 322 will make studying maths easier, mathematician says

QuoteDaniel Mansfield from University of New South Wales said the palm-sized tablet, covered in rows of tiny numbers in angular cuneiform script, simplifies the study of triangles from using angles and irrational numbers to simple ratios.

"This gives us a different way of looking at trigonometry. One that's really just passed on ratios. And the beautiful thing about it is that it's much simpler," Dr Mansfield told AM.

"It only involves ratios, you don't need to study trigonometry through angles: sin, cosx, tan and irrational numbers. You can do it with just ratios."

The tablet, known as Plimpton 322, was discovered early last century.

SOURCE:

http://www.abc.net.au/news/2017-08-25/babylonian-tablet-unlocks-simpler-trigonometry-mathematics/8841368

Makes one wonder...

http://www.thelivingmoon.com/44cosmic_wisdom/02files/Levitation03.html#Grid

QuoteAll the similar types of stories that I had read up until now were generally devoid of specific information necessary to prove the veracity of the account. In this case a full set of geometric measurements were taken, and I discovered, to my great delight, that when they were converted to their equivalent geodetic measures, relating to grid harmonics the values gave a direct association with those in the unified harmonic equations published in my earlier works.

QuoteThe following extracts are translations taken from the German article: 'We know from the priests of the far east that they were able to lift heavy boulders up high mountains with the help of groups of various sounds...the knowledge of the various vibrations in the audio range demonstrates to a scientist of physics that a vibrating and condensed sound field can nullify the power of gravitation. Swedish engineer Olaf Alexanderson wrote about this phenomenon in the publication, Implosion No. 13.

Prior to ww2 and Chinese Nazi Invasion:

QuoteA Swedish doctor, Dr. Jarl, a friend of Kjelsons, studied at Oxford. During those times he became friends with a young Tibetan student. A couple of years later, it was 1939, Dr. Jarl made a journey to Egypt for the English Scientific Society. There he was seen by a messenger of his Tibetan friend, and urgently requested to come to Tibet to treat a high Lama.

Well it's my goal now to put an end to this and find out who these people are and where their descendants are residing to get to the bottom of this story :P

Quote from: Somamech on September 01, 2017, 08:49:15 PM
Babylonian tablet Plimpton 322 will make studying maths easier, mathematician says

SOURCE:

http://www.abc.net.au/news/2017-08-25/babylonian-tablet-unlocks-simpler-trigonometry-mathematics/8841368 (http://www.abc.net.au/news/2017-08-25/babylonian-tablet-unlocks-simpler-trigonometry-mathematics/8841368)

Interesting. "322" is a Skull & Bones number.