My Inventions

LED white light bulb 

lightbulb was removed outdoor ! and socket cleaned as much as possible

this hole can almost fit some of the components

the 100 ohm and 2 x 220nF 400 V types

the 10uF is a 100V type, so plenty of margin here

tiny 4 pin rectifier almost visible in the heatmelt glue, yes this thing dont get hot at all !! so heat melt glue can be used.

Try to make it as compact as possible, for better fit in your lamp later

prototype board can be cut out and used as a stable holder for the leds

each little board was carefully serial connected and tested again to be sure it is right

I tried to spread the light in all directions, leds are quite directional specially before I grinded them flat

 using the capacitor ends as a supply base and the top leds as connections from the 2 and 2 boards, I got all the way arround without adding wires

making it straight and nice was not my main task, this is only a prototype to prove the NO LOSS supply is good

 The 220 ohm resistor can go anywhere in the diode chain, so I added it here and heatshrink'ed it with 2 layers

 it is clear the red leds are not same hipower technology, just bad luck

the beam width of the leds is terrible narrow, so to solve this, I simply grinded them flat ! this gives a much more nice diffused light
use sand paper or a table grinder, be carefull not to grind too deep into the led, just make it flat top and stop there.

 I feel confident to say anyone can make LED light at home and save big time !

Nano Technology

So what exactly is nanotechnology? One of the problems facing nanotechnology is the confusion about its definition. Most definitions revolve around the study and control of phenomena and materials at length scales below 100 nm and quite often they make a comparison with a human hair, which is about 80,000 nm wide. Some definitions include a reference to molecular systems and devices and nanotechnology 'purists' argue that any definition of nanotechnology needs to include a reference to "functional systems". The inaugural issue of Nature Nanotechnology asked 13 researchers from different areas what nanotechnology means to them and the responses from enthusiastic to sceptical, reflect a variety of perspectives. 

It seems that a size limitation of nanotechnology to the 1-100 nm range, the area where size-dependant quantum effects come to bear, would exclude numerous materials and devices, especially in the pharamaceutical area, and some experts caution against a rigid definition based on a sub-100 nm size.

Another important criteria for the definition is the requirement that the nano-structure is man-made. Otherwise you would have to include every naturally formed biomolecule and material particle, in effect redefining much of chemistry and molecular biology as 'nanotechnology.'

The most important requirement for the nanotechnology definition is that the nano-structure has special properties that are exclusively due to its nanoscale proportions.

We found a good definition that is practical and unconstrained by any arbitrary size limitations :-

 

The design, characterization, production, and application of structures, devices, and systems by controlled manipulation of size and shape at the nanometer scale (atomic, molecular, and macromolecular scale) that produces structures, devices, and systems with at least one novel/superior characteristic or property.

Mechanical properties of Nanosystems are of interest in the Nanomechanics research. Materials reduced to the nanoscale can show different properties compared to what they exhibit on a macro scale, enabling unique applications. For instance:

1. Opaque substances become transparent (copper);
2. Stable materials turn combustible (aluminum);
3. Insoluble materials become soluble (gold).
4. A material such as gold, which is chemically inert at normal scales, can serve as a potent chemical catalyst at nano scales.
   
   
   Applications of Nanotechnology
   
   In the modern communication technology traditional analog electrical devices are increasingly replaced by optical or Optoelectronic devices due to their enormous bandwidth and capacity, respectively. Two promising examples are Photonic Crystals and Quantum Dots. Photonic crystals are materials with a periodic variation in the refractive index with a lattice constant that is half the wavelength of the light used. They offer a selectable energy band gap for the propagation of a certain wavelength. Thus they resemble a semiconductor, though not for electrons, but for Photons. Nanolithography is that branch of nanotechnology, which deals with the study and application of fabrication of nanoscale structures like semiconductor circuits. As of 2007, Nanolithography has been is a very active area of research in academia and in industry.
   Quantum Computers use the Laws of Quantum Mechanics for computing fast quantum Algorithms. The Quantum computer has quantum bit memory space termed “Qubit” for several computations at the same time. This facility may improve the performance of the older systems.
   
   

Reverse Engineering

What is Reverse Engineering?
The process of duplicating an existing component, subassembly, or product, without the aid of drawings, documentation, or computer model is known as reverse engineering.

Reverse engineering can be viewed as the process of analyzing a system to:
1.Identify the system's components and their interrelationships
2.Create representations of the system in another form or a higher level of abstraction
3.Create the physical representation of that system.

Reverse engineering is the process of discovering the technological principles of a device, object, or system through analysis of its structure, function, and operation. It often involves taking something (e.g., a mechanical device, electronic component, software program, or biological, chemical, or organic matter) apart and analyzing its workings in detail to be used in maintenance, or to try to make a new device or program that does the same thing without using or simply duplicating (without understanding) the original.
Reverse engineering has its origins in the analysis of hardware for commercial or military advantage The purpose is to deduce design decisions from end products with little or no additional knowledge about the procedures involved in the original production. The same techniques are subsequently being researched for application to legacy software systems, not for industrial or defence ends, but rather to replace incorrect, incomplete, or otherwise unavailable documentation

Computer Science Engineering

Computer science or CS is the study of the theoretical foundations of information and computation. It also includes practical techniques for their implementation and application in computer systems. Computer scientists invent algorithmic processes that create, describe, and transform information and formulate suitable abstractions to design and model complex systems.

Computer science has many sub-fields; some, such as computational complexity theory, study the fundamental properties of computational problems, while others, such as computer graphics, emphasize the computation of specific results. Still others focus on the challenges in implementing computations. For example, programming language theory studies approaches to describe computations, while computer programming applies specific programming languages to solve specific computational problems, and human-computer interaction focuses on the challenges in making computers and computations useful, usable, and universally accessible to humans.

The general public sometimes confuses computer scientists with other computer professionals having careers in information technology, or think that computer science relates to their own experience with computers, which typically involves activities such as gaming, web-browsing, and word-processing. However, the focus of computer science is more on understanding the properties of the programs used to implement software such as games and web-browsers, and using that understanding to create new programs or improve existing ones