Short stories of human inventions
Archive for October, 2009
EKG Strips – Recording Heart Waves Through EKG Strips
Getting an electrocardiogram (ECG or EKG) is standard treatment procedure for handling heart ailments. An electrocardiograph works to monitor your heart’s electrical activity and from the data printed out on the EKG strips, the doctor pinpoints distress signals such as abnormal rhythms caused by possible cardiac problems. In some disorders as in the case of mycardial infarction, recordings on the graph can actually determine which heart muscle is damaged.How it worksThese days, EKG readings can be recorded both through a computer and through EKG strips or graph paper. An ECG paper is composed of small blocks that measures 1 mm2. The electrocardiograph runs at a paper speed of 25mm/s and one small block of the paper translates into 40 ms. For each second, the ECG takes up a large 5×5 block.TypesA good EKG strip should have larger columns to accommodate drastic changes in electrical waves. The grid should also be printed in a bright and clear color. If you’re going to need recordings over a longer time frame, it’s much more advisable to get the rolled strips to reduce clutter. The rolled graphs are composed of continuous grids… More >>
The Timeline of the Telescope
It is actually quite easy to make a time line with regards to the invention of the telescope as well as how it has evolved over the years. Much has been written about the telescope and good records have been kept with regards to new technologies and inventions. Basically, the telescope time line looks something like this:
1609 – Galileo first invented the telescope. Though it was crude, it still did the trick and allowed him to look into space for the very first time other than with the naked eye. Galileo’s telescope was a reflecting one causing light to bounce off a mirror when looked at through a lens.
Mid-1600′s – Johannes Keplar came up with the idea of a refracting telescope that would widen the field of view as well as improve the quality of the image. He did this by changing the shape and the placement of the lenses, but doing this caused little circles of color that would surround bright objects – chromatic aberration.
Late 1600′s – As the century began to draw to a… More >>
Tips on Low Cost Invention Prototyping and Small Volume Production Runs
IntroductionThe purpose of this article is to provide an outline on techniques that can be used to prototype an invention and make a small volume production run. This article will not cover the techniques in detail. There are multiple resources available online for each of the techniques mentioned in the article. Rather this article will show how to combine the techniques to produce a prototype and multiple copies. By using these techniques or variations, an inventor or entrepreneur would be able to make a prototype and multiple copies. In addition, by using the techniques I outlined in a previous article I wrote on low costs packaging and inventor or entrepreneur would be able to make a fairly complete product that could be test marketed or presented to a potential licensee.LimitationsFirst some warnings about the techniques outlined below. They are rather labor intensive. Not hard physical work per se, but it does require learning and developing new skills. Further, the number of copies that can be made using silicone molds varies and is dependent on the geometry of the components being molded. Typically the lifetime of a silicone mold… More >>
New Invention – Whole House Humidifiers
October 25, 2009
by merlin
in Technology
We should be grateful to the ever-developing technology for the invention of the whole house humidifier. It is a great thing to have at home for leading a healthy life. The benefits of the whole house humidifiers make us all crave for it.
Whole house humidifiers were made with the motive of regulating the presence of humidity in our homes. But it comes with additional features like purification of air and making the furniture last for a longer period of time. These humidifiers do not allow air borne diseases to enter the house. Consequently, this reduces the occurrence of diseases like flu, allergies, and colds. The wooden furniture and surfaces of the house do not wear out easily. The regulation of the level of humidity in the house makes the place a more comfortable one to live in.
The whole house humidifiers are fitted into the existing air conditioning system or the central heating of the house. The humidifiers control the humidity of the incoming air entering through the central heating or the air conditioning system. Whole house humidifiers are… More >>