Tag Info

New answers tagged

0

Ultraviolet light is very high energy. When it makes contact with your skin, you can actually break chemical bonds.


0

Although the most common answer to questions like that is "relative to what?", there are possible side-effects. If I recall correctly, the earth's velocity relative to the cosmic background radiation is on the order of a mere 600km/s. If we were to be travelling arbitrarily close to the speed of light as compared to our current motion, part of this ...


1

The potential difference between the two points on the wire is negligible at all times but initially there's a potential difference between the wire and the bird and there would be a (very short lived) transient current which is similar to electrostatic discharge you feel when you touch an object with electrostatic charge build-up.


1

Oh, I love this subject. The term here is radiation hormesis, and it's basically off-limits for nuclear regulators (If it's true, it horribly complicates the risk analysis for the use of any radiation source). The classic study comes from Taiwan http://www.jpands.org/vol9no1/chen.pdf where a number of apartment buildings were built using rebar that had been ...


0

What Floris points to is not all that strange. Living organisms exist in a state that is extremely far removed from thermal equilibrium, a lot of work is constantly being performed to maintain itself. So, even without any radiation, the body would fall apart on quite short time scales, were it not for the processes at work that do all the self repair work. ...


2

There is some interesting data on the subject. People looked at the relationship between the prevalence of radon in counties in the US with the mortality due to lung cancer, and found a surprising relationship. Instead of the "more radon kills more people" correlation that was expected, there was an initial "dip" in the curve - as though "a little bit of ...


0

What I'm about to describe is an indirect way of burning fats stored in the human body to produce electricity out of it. In some sense this is already in operation in many high-tech gyms around the world. It has been shown by recent research (cf. this article) that fat stored in the body is exhaled as a consequence of its combustion (not such a surprising ...


1

First off your premise makes no sense. There's no reason to believe that something that exists in 3 dimensions necessarily needs to perceive in 3 dimensions (although one would certainly expect that to offer an evolutionary advantage). So in that sense your question doesn't make sense. However, I'll attempt to answer the question of why is it that we sort ...


5

It's because our eyes have a 2D array of photo-sensitive receptors. Using two eyes you can 'detect' the third (depth) component. If you consider each eye to be a single point (for simplicity), the distance between the eyes themselves is a given 'constant'. A distant object in your vision, seen by both eyes, will be in a different position for each eye. You ...


0

Your question is a valid one and the missing piece of information that both answers your question and justifies the study of physics itself is a reductionist postulate to the effect that valid explanations of the most basic and most decomposed parts and behaviors of a system can be built into an explanation for all the system's behaviors and emergent ...


1

TOE is supposed to be a theory that explains everything microscopically, on the smallest and most fundamental levels. It doesn't bother with consciousness because that is a macroscopic phenomenon. Theoretically, with a TOE, we can explain consciousness, but in practice it would still be difficult.


4

The question is a possibility on both sites; though on Phil.SE you're more likely to get a wider range of answers. If one accepts the physicalist view then mind is said to be an emergent phenomena as @danu mentions; but a more careful view suggests that bulk properties as heat are emergent - in that a definite physical mechanism can be shown ie through ...


-1

To move forward with just about anything we must first need to take the leap that reality exists independently of our mind. This is something that we can, by definition, never prove one way or another, but since we cannot travel down the "reality is a dream" road, it only makes sense to go down the road that we can actually explore. Getting past that, ...


2

From "what is a kettlebell" website: So just what is a kettlebell? A kettlebell is a cast iron ball with a handle attached to the top of it (picture a cannonball with a handle on the top). This design makes kettlebells different from training with dumbbells because the weight of a kettlebell is not distributed evenly, thus creating the need to counter ...



Top 50 recent answers are included