Here’s a novel idea: creating electricity using a children’s see-saw!
Doesn’t the idea sound so simple, and yet effective. Especially the idea that other playground equipment could be used to create electricity as well. How about a roundabout with a built-in dynamo?
Well anyway, having read that article it set me thinking. Why does the project just have to be for Africa? Why can we not develop and use this novel idea for European playgrounds as well?
After all, we talk so much these days about carbon-emissions and finding a cleaner and more environmentally-friendly way of generating electricity. Here’s an idea that could really work!
I could just imagine the local playgrounds here generating and storing electricity during the daytime, in order to use it for the street lighting at night.
I think that inventor deserves a lot more funding and hope that one day his idea becomes a reality – all over the world!
See-saw energy
30 years of Spam
Earlier this week we celebrated 15 years of the world-wide-web, today is apparently the 30th anniversary of the first spam mail, even though the name was only coined 15 years ago.
I can’t say exactly when I received my first spam mail, it was possibly at university at around the time the name was first used. But at the time it wasn’t so much of a nuisance as I didn’t receive that much e-mail.
Even when I started work in Germany, I don’t remember there being that much spam mail around, which was probably a good thing as the internet lines were still very much modem- or ISDN-based. On the other hand, perhaps that was why there was not such much of it around?
But I do remember that suddenly around the year 2000 there was a sudden influx of it – and it was a real pain at the time. With spam filters still in their infancy, it was a case of using every trick possible to block the mails from reaching the mail server. Most web-based freemail providers did not have spam filters, and as someone who picked up their mail on the move the slow GSM access combined with the number of spam mails made it a chore to download headers and then remove the spam before downloading the e-mails that I wanted.
After that both the mail programs and the providers woke up and started working on their filters. These days, seven years later, and I use a combination of provider- and program-based filters, as well as my own hand-written ones. As a result I receive very little of it, and the ones that I do receive do not make it to my mobile devices. I even advise other people on how to avoid it for a living!
In fact, I probably have more problems with unwanted telephone calls than with spam mails. And should anything get through after all, then I can always blog about it…
Happy Birthday, WWW!
The BBC reported today, that the World-Wide-Web is celebrating its 15th birthday. This is because the first web technology was released by CERN on 30th April, 1993.
It’s not an event that I remember experiencing, although I know that I was in my second year at university and getting ready to go to Germany for my placement year, so I dug out my diary from that year to have a look.
Apparently I didn’t have any lectures on that day and stayed at home to do homework and revision, which I guess is not very exciting compared to the birth of the web!
I remember at the time using an information system called Gopher and my first contact with a web browser was with NCSA Mosaic in September 1994 when I arrived back at university for my final year.
It was then that I started to design web pages. My final year project for my computer science course was to design the website for the Department of Languages and European Studies, which included looking at the different technologies and where it was all going.
The site was basic by today’s standards, but it used an interesting feature of colour-coded links to show which pages were public and which were only available on the campus, as well as a separate colour for external links.
There were experimental audio files in WAV format and video files in Quicktime, as well as a selection of photographs provided by other students – often displayed with only 256 colours.
Many of the pages stayed online after I had graduated and have only been replaced within the last year years. I still have the source code to those pages, but you are unlikely to find them anywhere online now. To get some idea of how the site looked, there is a page of the main department site on archive.org which shows how the links were colour-coded.
I would have liked to have compared what I wrote back then about the future of the web with what has actually happened since, but although I have the project work backed up and readily available, I have been struggling to open the file containing my summary. It is another example of digital obsolescence as even with the wide variety of software and operating systems available to me I have not managed it yet!
I guess I will have to dig out the printed version of the project or return to the original PC that I wrote it on, providing it still works after all this time (and I was pushing it to the limit back then!)
The web has revolutionised the way that we work with and think about information, and back in 1995 when I was finishing off my project work I am sure that I would have written something about the forthcoming changes in peoples’ attitudes to working with the web and the availability of information.
But after all that has changed over the past 15 years, sometimes it is still the printed word that is easiest to retrieve.
