Stuff that occurs to me

All of my 'how to' posts are tagged here. The most popular posts are about blocking and private accounts on Twitter, also the science communication jobs list. None of the science or medical information I might post to this blog should be taken as medical advice (I'm not medically trained).

Think of this blog as a sort of nursery for my half-baked ideas hence 'stuff that occurs to me'.

Contact: @JoBrodie Email: jo DOT brodie AT gmail DOT com

Science in London: The 2018/19 scientific society talks in London blog post

Showing posts with label Google. Show all posts
Showing posts with label Google. Show all posts

Saturday, 24 December 2022

Santa Trackers and seeing the International Space Station as it goes over on Christmas morning

 

If it's not cloudy in the UK tomorrow morning (Sun 25 Dec 2022) at 7.12am you may be able to see - with the naked eye - Father Christmas in his sleigh and the International Space Station flying overhead, travelling from West to East. They'll appear as a tiny bright white dot moving quite fast, with no blinking.

The latitude table linked here is for London and more Northerly / Southerly cities might not be able to see it directly, but can certainly watch along online. Santa Claus' journey path can zip about a bit as he's not relying on quite the same laws of physics as the rest of us and can use a bit of magic to appear in more than one place at once. 

Spot the Station: https://spotthestation.nasa.gov/

Enter your city to find times and dates, and where in the sky to look, for the International Space Station. This link will take you to sightings for London.

Christmas Day - Sunday 25th December 2022
Sun Dec 25, 5:39 AM       3 min      61°      61° above SE     10° above E     
Sun Dec 25, 7:12 AM     7 min     86°     10° above W     10° above E

NORAD Tracks Santa: https://www.noradsanta.org/en/map

This uses radar, infrared sensors (Rudolph's nose gives off a good heat signal) and geosyncronous satellites to track Father Christmas' sleigh throughout Christmas Eve.

FlightRadar24 Santa Tracker:
https://www.flightradar24.com/multiview/2ea2ef9b

FlightRadar24 has multiple sensors around the world tracking aircraft flights thanks to a transponder on every aeroplane that transmits its location. Santa's sleigh (flight registration: HOHOHO) has been fitted with a transponder, and for greater accuracy, Rudolph the Reindeer's antlers can be used as an antenna.

Google Santa Tracker: https://santatracker.google.com/

Follow Father Christmas as he drops presents down chimneys and there are also games to play too.

You can also just type where is Santa into Google, and see what happens when you type Christmas!

Merry Christmas!



Saturday, 14 July 2018

Learning Morse Code online

https://morse.withgoogle.com/learn/

Click the pic above (or https://morse.withgoogle.com/learn) and then on Play a demo on desktop to go through the interactive Morse-learning demo. I discovered this thanks to this post from Lifehacker.

Google have arranged things so that smartphone users can type or receive a series of Morse dashes and dots. It's rather good fun and you can also do it on a desktop too (link above). The intention behind this is not just fun but as part of their programme to help people with more accessible communication. In the example given, someone can use head movements to produce either a dot or a dash and the sequence of these is converted into English text (or can be converted into any language).

To introduce this they've also created a really simple and clear method for training people in Morse code (morse.withgoogle.com/learn) which is fun and delightful - really good use of visual design - and I'd learned all the letters within an hour. The morning after I can still remember most of them. Isn't the U for Unicorn (.._) cute.


There are several 'directions' in learning Morse and this uses only one of them. You are given a letter in English - P - and you have to respond with the correct Morse letter - . _ _ . It's quite similar to how I learned to touch-type. First you start with f and j which are the 'home' keys on a keyboard, they have the little raised bit so your fingers can always find them. Then the other letters are brought in and soon you're confidently typing gibberish like fdf dfd jkj kjk and so on and after two weeks you're 50+ words a minute.

'Real' Morse, although no longer in official use (it's not used by the military and I think even amateur 'ham' radio enthusiasts are no longer required to be proficient), would never learn it just like that - you'd hear a series of dots and dashes and have to be able to transcribe back into English letters and numbers, and into words. This system doesn't teach that. Similarly it doesn't teach the reverse in that it doesn't present you with ... _ or _ ... and wait for you to provide V or B respectively (not a criticism, it's really fun and I think it's great and I know more Morse now than I ever did).

Learning Morse uses several 'sensory modalities' in that you have to listen (or see) and press buttons or write and ideally you'd learn to cross-convert an English letter to Morse and a Morse letter to English.

This morning I tried the Morse Code machine tester from Boy's Life (even though I am a girl, ) and was pleased that I got most of them right (but got a few wrong). In the picture below it's the letter 'H' shown.


I am fascinated by Morse Code, its history and use, and always feel that I want to be able to make sense of the dits and the dahs. However there's absolutely no reason for me to do so, so no impetus to learn beyond my curiosity.

This enthusiasm probably began about fifteen years ago when I was lying in bed at my parent's house fiddling about with a bedside radio and I came across a radio station broadcasting a series of beeps and beeeeps and wondered what it was. I tried to write them down but of course I couldn't work out where one letter began and ended, or where the sequence started. It took a few listens to make sense of where the spaces were and, with a bit of Googling later and I eventually worked out that the letters were CHT _._.  / .... / _   and that it wasn't a radio station but just the Chiltern Non-directional radio beacon for aircraft which was pinging out its location info which my radio had picked up. My parents lived within radio-listening distanced from the Chiltern beacon which is located at RAF Northolt (you can hear it in this old Audioboom of mine). Further googling also led me to this song 'The Slow Train' by Andy Lewis, which features the beacon as a backing track.

Morse is kind of a binary thing (well, not really as there's ON (dot or dash) and OFF (silence) with the transmitting units being built up to form letters, words and numbers. It let people send messages via telegraphy through a series of electrical pulses - not wildly dissimilar to the way in which nerves work - which converted the signal to marks on a bit of paper that were meant to be read. Early telegraphy operators found that they could just as easily translate into dots and dashes the sound the device made as it converted the electrical signal into an indentation on a paper tape. The paper tape became unnecessary and later when Morse was used in radio communications people realised it was quicker just to hear it as an audio transmission rather than as something you translate from a written page. [Wikipedia's page on the history of Morse code]

Below is a picture I took at the Orkney Wireless Museum showing the Morse alphabet. I was surprised to see accented letters.





Further reading
Make your own Morse key USB keyboard

Test yourself in Morse
Quiz: How well do you know Morse code? (27 April 2018, BT)
Morse Code test (1728.org)
A real-world test for certification with the Radio Society of Great Britain












Wednesday, 9 July 2014

How does Google's 'right to be forgotten' work? Actual question, not rhetorical trope :) #R2BF

Possibly this will be solved by 'reading more around the topic' but I've not spotted the answer yet and someone must know.

How does Google's "right to be forgotten" info removal service actually work?

If there is a web page that says stuff you don't like do you ask Google to
(a) stop indexing that page / those pages in the searches (ie provide Google with a list of pages for it to hide)
(b) not show in its search results any pages that mention specific keywords
or
(c) some other method

If (a) then presumably this can easily be thwarted by reposting the content onto a new page with a new address.

Also Google indexes most things on Twitter (admittedly transiently) so if someone was determined they could keep posting stuff there and it would show up in Google (as well as, obviously, on Twitter).

I can see (b) being mildly more successful but Google would have to throttle at the level of search, to prevent each new page with those words showing up. This seems like a lot of hard work.

Also, aren't there sites that monitor the requests made (similar to the ChillingEffects.org site that monitors requests for material under copyright to be removed). They've written on the right to be forgotten but I've not spotted the method Google's using.

If there are, don't bother looking in Google, just go to the relevant site and search there. Eg a Telegraph article I read this morning on R2BF suggests that Google has removed some of the Telegraph's links (suggesting method [a]...) on its search results about someone after they requested it, but searching on the Telegraph's site for the person mentioned in the article brings up other information, whether or not it's indexed on Google.

I'm sure the ethics, privacy, free speech aspects of this are all very interesting but what I'm actually intrigued by is just the practicalities.