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The Sun is a pretty good approximation to a black body. This is also true of Rigel- which is blue, and Betelgeuse- which is red. It gets more complicated if someone gets a white spotlight and sets it up to shine a ring of white light round the yellow spot. The yellow spot looks brown. Of course, none of this matters because (at last according to some people), we can't see light.

My experience is that on average, people are bad by default.

! Moderator Note IOW, it's not about the OP. It's your new line of thought. It's hijacking.

I stand corrected....first instance it is. Just found an interesting and apt description of light and colour here.... http://www.physicsclassroom.com/class/light/Lesson-2/Visible-Light-and-the-Eye-s-Response excerpt from link....... "If the appearance of yellow is perceived of an object when it activates the red and the green cones simultaneously, then what appearance would result if two overlapping red and green spotlights entered our eye? Using the same three-cone theory, we could make some predictions of the result. Red light entering our eye would mostly activate the red color cone; and green light entering our eye would mostly activate the green color cone. Each cone would send their usual electrical messages to the brain. If the brain has been psychologically trained to interpret these two signals to mean "yellow", then the brain would perceive the overlapping red and green spotlights to appear as yellow. To the eye-brain system, there is no difference in the physiological and psychological response to yellow light and a mixing of red and green light. The brain has no means of distinguishing between the two physical situations. In a technical sense, it is really not appropriate to refer to light as being colored. Light is simply a wave with a specific wavelength or a mixture of wavelengths; it has no color in and of itself. An object that is emitting or reflecting light to our eye appears to have a specific color as the result of the eye-brain response to the wavelength. So technically, there is really no such thing as yellow light. Rather, there is light with a wavelength of about 590 nm that appears yellow. And there is also light with a mixture of wavelengths of about 700 nm and 530 nm that together appears yellow. The yellow appearance of these two clearly different light sources can be traced to the physiological and psychological response of the eye-brain system, and not to the light itself. So to be technically appropriate, a person would refer to "yellow light" as "light that creates a yellow appearance." Yet, to maintain a larger collection of friendships, a person would refer to "yellow light" as "yellow light." <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

NortonH has been suspended for 3 weeks for continuing to soapbox his points in conversation. When you don't bother to address valid arguments in the discussion, you're just preaching, or soapboxing, and that's against the rules. People are taking the time to deconstruct your arguments intellectually, the least you could do is reciprocate, instead of just repeating yourself ad nauseam.

Don't worry John, given your political views, you'd probably get in; although It may have a few questions about why you're so determined to piss on their parade.

You are speaking like blue collar work is something bad. It isn't.

Gee whiz... Photons are messengers carrying information in the form of waves, our eyes detect the photons that strike our retinas, our nervous system carries this information to our brains where we distinguish color and direction vector of the photon. Interestingly we can be easily fooled... frequency and direction can be distorted even to the point where we have no comprehension of the information.

https://phys.org/news/2018-03-chemical-sleuthing-unravels-path-life.html Chemical sleuthing unravels possible path to forming life's building blocks in space March 5, 2018, Lawrence Berkeley National Laboratory Scientists have used lab experiments to retrace the chemical steps leading to the creation of complex hydrocarbons in space, showing pathways to forming 2-D carbon-based nanostructures in a mix of heated gases. The latest study, which featured experiments at the Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab), could help explain the presence of pyrene, which is a chemical compound known as a polycyclic aromatic hydrocarbon, and similar compounds in some meteorites. A team of scientists, including researchers from Berkeley Lab and UC Berkeley, participated in the study, published March 5 in the Nature Astronomy journal. The study was led by scientists at the University of Hawaii at Manoa and also involved theoretical chemists at Florida International University. "This is how we believe some of the first carbon-based structures evolved in the universe," said Musahid Ahmed, a scientist in Berkeley Lab's Chemical Sciences Division who joined other team members to perform experiments at Berkeley Lab's Advanced Light Source (ALS). Read more at: https://phys.org/news/2018-03-chemical-sleuthing-unravels-path-life.html#jCp <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> the paper: https://www.nature.com/articles/s41550-018-0399-y Pyrene synthesis in circumstellar envelopes and its role in the formation of 2D nanostructures Abstract: For the past decades, the hydrogen-abstraction/acetylene-addition (HACA) mechanism has been instrumental in attempting to untangle the origin of polycyclic aromatic hydrocarbons (PAHs) as identified in carbonaceous meteorites such as Allende and Murchison. However, the fundamental reaction mechanisms leading to the synthesis of PAHs beyond phenanthrene (C14H10) are still unknown. By exploring the reaction of the 4-phenanthrenyl radical (C14H9•) with acetylene (C2H2) under conditions prevalent in carbon-rich circumstellar environments, we show evidence of a facile, isomer-selective formation of pyrene (C16H10). Along with the hydrogen-abstraction/vinylacetylene-addition (HAVA) mechanism, molecular mass growth processes from pyrene may lead through systematic ring expansions not only to more complex PAHs, but ultimately to 2D graphene-type structures. These fundamental reaction mechanisms are crucial to facilitate an understanding of the origin and evolution of the molecular universe and, in particular, of carbon in our Galaxy.

TenOz - I'm not serious in the sense that I doubt anyone who has any actual responsibility in this is interested in or will be influenced by my 2c worth. I freely admit to a lack of relevant expertise and, usually, I prefer to defer to experts who know a lot more than I do. No doubt there is an element of Dunning-Kruger in my simplistic alternative solutions - that if I knew a lot more maybe I might see why they can't or won't help. And yet it doesn't take an expert to see there is an enduring absence of expert solutions that do work. Where there is a high level of disagreement amongst experts I suspect there are things that are, if not overlooked are overshadowed - most of all that there are competing and incompatible motivations at play; retaining power and keeping up appearances internally are not the same as securing enduring solutions. Kim Jong-un's posturing is for internal consumption, as is Donald Trump's. I suppose helping North Korea economically in order to ease them towards more normalised international relations is too counter-intuitive despite the regime having come to depend on the existence of outside enemies for legitimacy and solidarity. I doubt there is any genuine plan to attack the US or, with the exception of South Korea, it's allies - although I suppose passing on WMD's to crazies that would use them is a real possibility - yet that threat would also be reduced by improved economic circumstances and more normal relations.