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exchemist

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exchemist last won the day on July 18

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About exchemist

  • Rank
    Molecule

Profile Information

  • Location
    London
  • Interests
    Rowing, choral singing, walking.
  • College Major/Degree
    Chemistry MA, Oxford
  • Favorite Area of Science
    chemistry
  • Biography
    Trained as a patent agent, then gave it up and worked for Shell, in the lubricants business for 33 years. Widowed, with one teenage son.
  • Occupation
    Retired

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1492 profile views
  1. I certainly think in the UK there may be a resurgence of union membership, due to greater bargaining power by labour. However it seems to me this is caused more by Brexit and the consequent disappearance of the EU labour pool that provided us with so many workers, from care homes, to fruit and vegetable picking, the restaurant trade and on to lorry drivers. One has to hope that the unions will be far more modern and business-literate in their attitude than they were back in their heyday of the 1970s. Certainly, the unions representing occupations such as automotive work seem to have moved
  2. I'm sure there has been an effect caused by the disruption causing people to rethink their lives. Often, we need a chance to stand back for a while if we are to get a perspective on where we are going and have time to ask ourselves questions about it all. Commuters, in particular, and their employers in urban offices, have learnt what can be done via IT and may not want to resume the daily commute ever again. That will affect businesses that provide services to city workers, reduce real estate prices in city centres, and will be a boost to services provided in the places where the workers live
  3. If they broke the law they could be done for tax evasion and fined. What they and other multinational companies do is exploit, by perfectly legal means, the differences in tax regimes between countries. That's why Biden et al want to harmonise taxation - or at least set a minimum level - to reduce the ability of these companies to engage in (legal) tax minimisation by arranging for the bulk of their profits to be on the books of their entities in low tax countries. What they do is avoidance, not evasion. Ireland has benefitted hugely over the last couple of decades by offering low
  4. Not if their legalese contravenes the local law where they trade. And anyway, a company like Amazon has no interest in breaking local law: it could cost them the right to trade there.
  5. Indeed. I would have expected a technology-worshipping nation like the US to have been already all over this like a rash, with acoustic and microwave sensors for all frequencies, in every embassy and consulate across the globe.
  6. The curious thing is that nobody has yet detected the putative microwave beams. Though I see there are now some devices being deployed in an attempt to do that.
  7. I did this as child, using yoghourt pots and string. It worked very well. With tin cans I imagine it depends on how free the base is to move, so a thinner one will be better. But there is no doubt that it works in principle, so long as you keep the string taut.
  8. Yes, FOB, CIF, and so forth. A lot is to do with who insures the cargo, who arranges the freight, etc. I’ve forgotten most of it.
  9. Hmm, interesting. I found this from Which, which refers to another piece of legislation, the Consumer Rights Act 2015, which seems to support your contention: https://www.which.co.uk/consumer-rights/regulation/consumer-rights-act-aKJYx8n5KiSl So, indeed, I don't know how this is reconciled with the earlier Act, e.g. whether it repeals the relevant provisions of it, or how it can be reconciled, if at all, with Amazon's T&Cs. It looks as if you may need to find a lawyer specialising in consumer rights law, to get to the bottom of it.
  10. The first paragraph quite explicitly states (highlighted by me in red) that delivery to the carrier is deemed to be delivery to the buyer. That's exactly what the Amazon T&Cs are saying, too. The 2nd para qualifies this by saying that if the seller uses an inappropriate contract for delivery, for the goods involved, then the buyer can hold the seller responsible for any loss or damage.
  11. If you are a fine art student at a university, perhaps you can get in touch with someone in the chemistry department to help you further. Most things that the human nose reacts to are organic compounds that are not themselves gases but whose vapour, at low concentration, is detected by the olfactory system. But it's a very complex business. One of the chemists I studied with at university went into the wine trade and tried to analyse what gives wines their individual flavour. It's just about a lifetime project. The smell of roast chicken probably involves hundreds of compounds. Or, if
  12. I’m not quite sure what you mean by capturing. Do you mean a complete chemical analysis of a sample of air? The issue with that will be down to what threshold of detection, because there will be traces of all sorts of things at very low concentrations. The other issue is you need to have some idea of what molecules you are looking for in order to pick the best analytical method to use. If this is a smell project I imagine you won’t be interested in the major gases, but more in organic compounds , and possibly at the ppm level. Is that right, or are you thinking of inorganic components that the
  13. It seems to me that consciousness is not an entity at all but an activity: the activity of the brain. I think a great deal of time and energy has been wasted by misclassifying an activity as a thing. It's a category error, in my opinion.
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