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What about the other three?

February 22nd, 2010 Jonathan 1 comment

I spotted this article on the web earlier today, which discusses a possible cure for peanut allergies. But one particular section jumped out at me:

The largest ever trial to find a treatment for potentially fatal peanut allergies is to give sufferers tiny amounts daily to build up tolerance.

Twenty out of 23 sufferers in an earlier study became able to eat more than 30 peanuts safely.

Umm… what happened to the three people who were not able to eat the peanuts safely…?

Categories: Science Tags: , , ,

The house of the future

December 23rd, 2009 Jonathan 2 comments

Some years ago, my dad bought me a book about electronics, computers and robots from a jumble sale for 10p. It was published in 1984 and probably about 15 years out of date when I received it.

Today I came across it on my bookshelf back at my parents’ house, and there’s a double-page spread in it called Television and Video in the Year 2000. It has a picture of how a house might look in the millennium year.

Of course, speaking today with a decade’s hindsight, the house looks like something from Thunderbirds, but some of its predictions have indeed come true. Let me reproduce it for you here.

When you are grown up and your children are going to school, this book may not exist. In fact, schools as you know them may not exist either, and libraries with books may be museums. All this will happen because of television and video. Television was invented during the 1920s by John Logie Baird.

Studying by Television

Let’s visit a home of the future, say in the year 2000, and see what everyone is doing. Alice is 12 years old. She is not wasting time watching television; she is at school. That’s her teacher on the screen. She manages to see Alice once a week to check her written work, but not for long. By teaching on television she could have a thousand pupils in her class at once, but she doesn’t have more than a hundred. Alice likes to ‘go to school’ in the living-room where there is a row of flat screens against the wall. She wears headphones to listen to the teacher.

Alice’s brother, Peter, likes to work by himself in his bedroom with a smaller, personal screen. He is 20 years old and, although he lives in Britain, he’s studying with the Massachusetts Institute of Technology in the United States. His microcomputer and screen are linked by telephone to the local library. They are sending Peter a new article written in America. They received it overnight from the United States during the cheaper-rate computer time.

Work and Leisure

Dad has worked at home for the last five years, ever since his supermarket became fully automated. As supply manager for the supermarket, he checks the stock on the shelves every Monday morning visually through the closed-circuit television cameras. On his home screen he can also study the computer totals produced by the automatic check-out tills.

Mum is watching a live television programme. Her favourite daytime programme is the 24-hour European news station which the family receive through their satellite dish receiver on the roof.

Grandad Jones is the only member of the family who uses the video disc. At the moment he’s looking at a dahlia catalogue, and the video disc gives the best picture available on any system.

Granny Jones can hardly walk and spends her time watching the goings-on out in the street through the local closed-circuit camera system. The council originally set up the system to help stop burglaries.

I’ve also photographed the image from the book – apologies for the quality. I might even get round to scanning it one day. Click for a larger version.

A house of the future

A house of the future

So how accurate were the predictions?

Lots of  the things mentioned in the picture are easily possible with today’s technology. But few people do them because they are inconvenient or expensive, or simply a bad idea.

It would be easy to set up a videoconferencing system to allow pupils like Alice to have school lessons at home – but nobody would do it because it misses out on an awful lot of face-to-face contact. Peter’s use of technology to get hold of documents is more realistic.

Likewise the father working from home – it’s possible to install cameras around Tesco and have the stock manager working from home, but it’s useless and expensive.

As for the mother watching 24-hour live news and the grandad watching what’s essentially a DVD – spot on. But how bored must the granny be to sit there watching CCTV in her own street?

It seems to me the biggest omission of this futuristic house is the use of computers and the Internet – although lots of the video systems in use seem to do computer-like tasks. Each person in the house is using specialist equipment for each task, and each piece of equipment has its own source of external connectivity.

The beauty of modern computers is that they can do a wide variety of tasks, and that the Internet can be used to carry any sort of data, whether it’s a text document or a video stream.

The most saddening thing about that house is that nobody is talking to anyone else, and nobody has any reason to go outside. I hope that doesn’t come true!

Categories: Gadgets, Science Tags: , ,

Energy cost calculator

October 6th, 2009 Jonathan No comments

Ever wondered how much it’s costing you to leave your computer on overnight? Or the hallway light?

I used to go with “One watt for one year is one pound” but clearly with the way energy prices are climbing, this isn’t true any more.

So I knocked together a simple script that can calculate how much it’s costing you to run your stuff. You can use it in the frame below, or in its own frame at this link.

Categories: Science Tags: , , , ,

Sunset

May 22nd, 2009 Jonathan No comments

For anyone who also reads my photo blog, you might have seen that I went out around sunset last night to see if there were any interesting photos to be taken.

Before I left the house, I checked the official time of sunset on the BBC Weather website, and found it to be 9:04pm. I wasn’t really sure how “sunset” is defined, so I left the house early to cover myself.

My observations on the evening didn’t really help me deduce what is meant by “sunset” as it’s hard to tell when the sun goes below the horizon when there’s a gorge, some cliffs and a tall forest in the vicinity. I also wasn’t sure if it was the time that the leading edge, trailing edge, or midpoint of the sun touched the horizon. So I looked it up on Wikipedia.

In astronomy the time of sunset is defined as the moment the trailing edge of the sun’s disk disappears below the horizon in the west. Due to refraction of light in the atmosphere, the ray path of the setting sun is highly distorted near the horizon making the apparent astronomical sunset occur when the sun’s disk is already about one diameter below the horizon. Sunset should not be confused with dusk, which is the moment at which darkness falls, when the sun is about eighteen degrees below the horizon. The period between the astronomical sunset and dusk is called twilight.

So now you know. The official time is not only defined in a vague way (what’s the horizon?) but also hard to measure.

Categories: Photography, Science Tags: ,