Parallax and gardening

The plan for today was to write a new proof for 100 Proofs that the Earth is a Globe. I managed to get one completed: 45: Parallax of the Moon. This proof includes a practical experiment that I can do, with the help of readers in different places around the world. So if you’d like to help, please give it a look!

After finishing that, I walked up to the hardware store to get some hex keys. I have a hand towel holder in the bathroom that’s been loose for ages. It’s held onto a wall bracket by a grub screw with a hex key head. In the past few days I searched for the original hex key, but couldn’t find it in the likely places, such as either the mini toolbox under the kitchen sink, or the big toolbox in the garage. So I had to go buy some hex keys. Measuring the size of the needed hex key was pretty much impossible, so I figured I’d just buy a set with various sizes.

Of course I got to the hardware stores and they have sets in both metric and imperial sizes, and of course I have no idea which one I need, so I end up having to buy both. Fortunately it was only $5 for a set of 8 keys in each type, so I paid $10 for 16 keys. I got home and picked a likely looking size – 2.5 mm from the metric set – and it fit perfectly. I tightened the grub screw… but the towel holder was still wobbly. So I unscrewed it completely and took it off the bracket, and discovered that the bracket itself was loose on the wall. So I got a screwdriver and tightened that up, then reattached the hook and tightened up the grub screw, et voilà! The hook is now firmly attached and not wobbly any more.

And I have 16 new hex keys, 15 of which I’ll probably never use. And one of which I might never use again.

This afternoon I went out to the park across the street to use my new weeding tool (bought the other day) to remove some bindii from the grass. I’ve never done weeding in a garden/lawn before, but it was pretty easy to figure it out. I used gardening gloves, but even so, the thorns from the bindii sometimes poked through the gloves and into my fingers. It was some work squatting on the grass and pulling weeds, but I collected half a bucket full in about an hour, clearing an area of a few square metres of bindii. This will make it much more comfortable for Scully to walk around, although I’ll need to clear quite a bit more space to get the little park fully clear.

Tonight is our fortnightly games night, still virtual because of COVID. I’ve managed to win a game of 7 Wonders and 6 Nimmt so far.

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Golf and chores

I left home early this morning for a round of golf at the Lane Cove course I’ve played before. I think I’m getting a bit better slowly, but I messed up some long putts today and didn’t score much better. I did at least manage to finish with the same ball I started with, rather than losing several balls like last time, so that’s something!

At one point I caught up to a group of 4 players, and they invited me to tee off with them and play through. Under the pressure of them watching me, I flubbed my tee shot badly, ending up in thick brush about 10 metres left of the tee. One of them joked that he was happy to see a shot worse than his. They helped me look for my ball a minute, before heading off to play their own, leaving me lagging behind again. I did find my ball a couple of minutes later, but had to take a drop to make it playable.

After finishing, I went home and then walked up to the supermarket to get some food supplies. And when I got home I turned to some chores that needed doing. I’ve been putting off calling a plumber for a noisy, vibrating bathroom tap for ages. I thought maybe it needed reseating and asked a friend I know who is much more of a handyman then I am how difficult a job this is, and if he thought I could manage it. He suggested that the vibration I described was more likely caused by the type of valve/washer I’d installed last time I replaced the washer, and to try a traditional flat washer instead. So I did that, changing the washer… and lo… the vibration problem vanished! However, my friend suggested I should probably also get a reseating tool and use that on the tap to ensure no leaking. So I’ll do that another day.

I also did some other general housecleaning, and I emptied the damp collecting tubs in the wardrobes and closets and replaced the absorbing crystals. Normally I have to do this every couple of weeks because Sydney is generally a bit humid, but it’s been so dry lately that it’s been a couple of months since I did it last.

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Bracing for Tuesday

I’m currently reading a book about Sydney, and it says that Sydney is a city governed by three winds. The nor-easter, the westerly, and the southerly. And it’s so true.

  • The nor-easter brings in warm, moist air from the Pacific Ocean. It brings warm, humid weather.
  • The westerly brings in hot, dry air from the interior of the Australian continent. It drives the very hottest weather, but keeps the air dry.
  • The southerly is the wind of the cold change and storms. It brings cold air up from the south, often moist and laden with rain and violent winds.

On a hot day, especially in summer, the westerly wind will bake the city and dry everything up, parching the grass and blowing dust into the air. And people will wait for the southerly change, known as the “southerly buster”, to bring relief and rains.

The past few weeks the westerly has brought not only hot, dry air into the city, but also the smoke from the bushfires west of the city. But today was a blessed relief, with the nor-easter blowing fresh air in from the sea. The smoke was gone this morning, and I could see actual clouds in the sky, rather than just a uniform grey-orange pall blanketing everything. There’s still some smoke high up in the upper atmosphere, so the sky wasn’t really blue, it was more brownish, but at least today we could go outside and breathe. The only issue was that it raised the humidity a lot. I did a lot of walking today, and although it wasn’t hot, the humidity was a killer.

First thing this morning I had the car booked in for an annual service. I dropped it off at the service centre at 7:30, which fortunately is within walking distance of home. But I didn’t go straight home – I headed to my barber for a haircut. I knew he opened earlyish, but it turned out I got there at 8 and he didn’t open until 8:30. So instead of getting a haircut, I went to the supermarket and did some grocery shopping, which I carried home.

Once I’d unpacked the groceries and put them away at home, I headed out again. this time to the post office to mail a Christmas gift. I’m taking part in the reddit Secret Santa, and had a box of goodies to be sent to my secret giftee. I had good luck with the packaging – I grabbed a likely looking box from the Post Office packaging supplies and my gifts fit perfectly into the box. They were snug without being tight, and required no extra padding to stop them rattling around. This may be the first time this has ever happened!

After sending my gifts, I went back to the barber and got my haircut. I was a dollar short of the price on the wall, and said I’d go get some cash from an ATM, but the barber said he had EFTPOS now! I’ve only ever seen anyone pay cash there before, so that was a bit of a surprise. Saved me a walk to the ATM though.

Then I walked home and, not 10 minutes after I walked in the door I got a phone call from the car service place saying my car was ready to be picked up. So I walked back up there to get it. I tracked my walks on Strava and by the time I picked up my car I’d walked over 8 kilometres (5 miles). As well as servicing the car they’d washed and detailed it. When I got home I decided it was a good time to wax the car, seeing as it was now clean – and water restrictions mean it will be harder to wash again from tomorrow (more about that later).

But first I had lunch while the engine cooled down, and then after eating I waxed the car. I’d intended to start writing a new 100 Proofs that the Earth is a Globe today, but time really got away from me with all the various chores to be done. Late afternoon my wife and I took Scully out to the dog park for some exercise in the fresh air.

Now about water restrictions. Sydney has been on Level 1 restrictions for some time now, but Level 2 restrictions go into force from midnight tonight. The city’s water supply is at 45% capacity, and that triggered this change. From tomorrow, it will be illegal to use a hose for any purpose other than fighting fires – no garden watering, no washing of cars. Gardens can only be watered by drip irrigation or watering cans, and only before 10am or after 4pm. Cars can only be washed with a bucket (which makes it more difficult and laborious than using a hose – I think this measure is really designed to deter people from washing cars altogether, rather than to make everyone change from hoses to buckets, which I really don’t think saves much, if any, water as the bucket is so much less precise and you have to slop water all over the place with it to rinse the car properly).

Level 2 is mild compared to some rural towns which are on Level 4 or 5 at the moment. The details vary from town to town, but these include measures such as watering lawns and gardens allowed for a maximum of 30 minutes only by hand watering can on Sundays only before 9am or after 6pm, complete banning of washing cars by any means (you’re only allowed to wipe clean windows and mirrors), and restricting people to one shower of a maximum of 5 minutes per day or a bath with a maximum water depth of 10 centimetres. These are towns of 30 to 40,000 people with these restrictions. The drought in south-eastern Australia is terribly serious.

And the forecast for tomorrow in Sydney is not good. The westerly will be back, and with it smoke from the fires. It will bring temperatures over 40°C to the suburbs (the city is by the coast, so is usually a bit cooler, but it’ll be high 30s), as well as strong, and dry, winds. And there may be some dry lightning storms as well. All of this is a recipe for danger with regard to the ongoing bushfires. Hot dry winds will whip them up and carry embers further east, towards the city. Last Friday we had ash falling on the city as far east as my home, and some of my friends reported burnt leaves falling from the sky.

So everyone in this city of 5 million people holds their breath tonight.

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