We have studied constraints to programs, but we can use constraints to programmers instead. Let's assume the following constraint: Programmer must always figure out, for his specific algorithm, how…

Let's assume that we do not have a DoesHalt(program) function, but DoesHalt() function inside runtime of program, which is able to signal true or false. It is also able to hang. At first, the case…

Introduction The use of non-human animal models has allowed the fast progression of scientific discovery over the last several centuries. These experiments have lead to great discoveries that have…

Physics and Technology of CCD A charge-coupled device (CCD) is a device for the movement of electrical charge from one capacitor to another one developed by W. Boyle and G. Smith in Bell Laboratories…

Today is the 2000th day of blogging for me. And this is my 2003rd post! It all started in December 2004, when I first learned about the existence of a thing called "blog". I had been contacted by…

One balmy July afternoon, when the fresh-faced optimism from having completed my PhD had seriously begun to wear off, I went to lunch with a famous scientist.  This jovial, moustached…

Can elicitors like Chitosan elicite the same response as the stress signals in plants. How one can relate both the phenomenon. Do stress induced proteins also have a role in signal transduction

Sodium chloride or for that matter largely sodium acts as signal to activate various metabolic pathways in plants including response to stress. Human brain also has some kind of Sodium balance i.e.…

A new study published in the Proceedings of The National Academy of Sciences has compared the qualifications and publication histories of climate change skeptics to those of Anthropogenic global…

Arctic Tipping Points - #7: Can The Arctic Recover? In Arctic Tipping Points - #6: Are We There Yet? I attempted to show that there are multiple feedback mechanisms which are capable of causing a…

When light is used to transmit information,  modulated light pulses travel along optical fibers, which can become weaker due to optical attenuation in the fiber and so are refreshed in signal…

A neutrino has a mass, physics says, but it is elusive to figure out and extremely hard to measure – a neutrino is capable of passing through a light year (about six trillion miles) of lead without…

J' Recuse! I must declare my interest right up front. I am deeply concerned that we are leaving behind us a legacy of planet-wide pollution and despoilation for those who follow us as custodians of…

Which is cooler: "I run a rocket company" or "This is my secret remote tropic island spaceport"? In A Spaceport of Her Own, I interview Randa Milliron about InterOrbital System's code-named "Tonga…

The big war in science during this decade has not been Republicans against human embryonic stem cell research or Democrats against agriculture, it has instead been open access publishing versus…

Naked girls as you have never seen them before: Eizo, a Japanese company, has an interesting way to advertise their radiological products. I'd comment that seeing underneath clothing might be good…

What's the best way to swim? If "best" is the same as "tried and recommended by the majority of fish," then the answer is easy. Think of your basic sardine beating its tail back and forth propel…

Abstract:  Four types of DNA stains were evaluated based on safety, ease of use, cost, and resolution.  Ethidium Bromide was tested primarily as a comparison to the standard stain normally…

The BP oil spill in the Gulf is doing unmeasurable damage to the local economy and ecology of the region.   Are government efforts geared toward making undersea oil extraction safer or cleaning…

Arctic Ice June 2010 - Solstice Update This is an update to my articles Arctic Ice June 2010 and Arctic Ice June 2010 - Update, part of my ongoing series of articles about the Arctic. The NSIDC ice…