How to Build a Robot
Robots as we all know are considered as friendly creature created by human beings as we are created by God. They are created for human being to simplify life even more basically for our daily chores with the specified sequence and even by military for the purpose of doing things which has the danger to life of human beings and thus they are developed over years to substitute human beings in all the fields.
Many of us are not that qualified to make a robot by ourselves and that why we all are anxious to know how to make a robot and even depends upon the task we want to create it for. We all have the tendencies of exploring whatever new comes in the field of science and hence a basic prototype robot can be created knowing few basic high end programming stuffs.
Robots are almost 30% programming and hence if we target one specific purpose and program it well enough then it serves our purpose and the program mostly used for this is Unix and for beginner’s Lego Mindstorms series is the best and how complicated your robot might turn up to be depends upon your technical acumen.
While learning how to make a robot we should always keep in mind that fewer the moving parts be of the robot better it is for the beginner’s as for startup we might just want it to move from here and there or hold something and sort of stuff. We should link if-then statement well and it should be taken care of that battery is never less then 50% and if so happens it should be re charged.
Thus we now understand that knowing how to make robot can never be known as there is no limit to what can be achieved with the knowledge of science and development of robots can never end.
Categories: Education, Learning, Science, Service Tags: build robot, How to Build a Robot, knowledge, Lego Mindstorms
How to Build a Rocket
Rockets – They are one of the most enjoyable pyrotechnic devices. Small lightweight rockets can be made using Black powder, which is used popularly as rocket propellant and is easy to mix. We have explained the basic steps that can follow to make a simple rocket.
First make the black powder mix. Use Potassium Nitrate, Air Float Charcoal,80 Mesh Charcoal, Sulfur in the ratio of 16:6:3:4. This is a optimum mix ratio, grind all the mix into a container and make a fine free flowing powder. Pass it though a mesh preferably 20 Mesh steel mesh.
Take a 4 Oz Engine tube for making the Body of the rocket. Now ram the fine grained black powder mix into the tube up to 80% and a little air room. You can use a ‘ram through funnel’, which will make our task easy, the rammed materials inside the body of the rocket should be hard.
Now fill in clay after making it a little moist and fill it in the space where the room for air has been left. Now punch a thin hole in the clay using a thin object, say needle. This is for the fuse. A ready made fuse can be obtained from a firecracker or by coating a cotton string with the same black powder material.
Attach the fuse to the under part of the rocket body through the clay, also make a conical head of paper materials.
Now tape a long stick to the rocket for stability. The rocket is ready now, bury the stick in the sand upright and light the fuse, watch it skyrocket upwards.
Categories: Education, Learning, Science Tags: Air Float Charcoal, Black, build rocket, How to Build a Rocket, Mesh Charcoal, Oz Engine, Rockets They, tape, Use Potassium Nitrate
How Your Brain Works
Your Brain – General Features
The Human Cortex
The most striking feature of the human brain is seen in the cortex. This is the folded, hemispherical structure which constitutes the bulk of the visible brain.
It is not present in reptiles.
The cortex is relatively recent. It is perhaps one hundred thousand years old and is the part of the brain most closely associated with our ability to form complex representations of the external world, to reason logically and to use language.
It is much more dominant in humans than in any other species.
Regions of the cortex control vision, our auditory senses, and voluntary movement and touch sensations. It is also crucial for long term memory.
Neurons and Networks
The central nervous system is composed of something like one hundred billion nerve cells or neurons.
Each nerve cell or neuron possesses a single axon along which it can pass electrical signals to other neurons. Incoming signals are carried by a neuron’s dendrites which form a tree-like structure around the neuron.
Neurons are about one micron (1 millionth meter) in diameter. The dendrites are perhaps ten times this in length while the axon varies from a millimetre up to one metre in length.
The signal from one neuron reaches another at the junction of axon and dendrite — the synaptic gap.
The typical voltages associated to these signals are small (tens of millivolts) and travel at about two hundred miles an hour (100 metres per second)
Typically neurons can only fire once every millisecond (one thousandth of a second)
Different patterns of electrical firing activity are associated with different brain functions.
Learning and Connections
The brain is both robust (able to function in the event of severed connections and/or dead neurons) and plastic – able to adapt to new memories and functions.
This is due to ability of the brain to form new connections between neurons. These connections take place at synapses and are
mediated by the release of neurotransmitter chemicals.
These neurotransmitters alter the effective strength of the signal which can pass between
neurons.
During our early years and during any kind of learning process these connections form and change their strengths.
The power of the brain as a computational device derives from the complex network of neural pathways and the simultaneous processing capability of all the neurons.
One such immensely powerful device belongs to you.
You can personally programme this device (your brain) to deliver everything you have ever truly desired.
This Genie within you is simply waiting to be told what it is you want.
So set your Genie some exciting tasks to perform and pilot yourself to a future of positive expectation.
Categories: Education, Learning, Science Tags: about, activity, brain, chemicals, genie, How Your Brain Works, Human, human cortex, language, Learning, neurons, power, power of the brain, The Human Cortex, This Genie, Works, Your Brain General Features
