Today I learned...

[V_R]

TIL: Bees don't have as much sperm as they used to.

https://www.theguardian.com/environ...s-bee-sperm-by-almost-40-per-cent-study-shows

I like bee's, why can't this happen to wasps instead?

 

[Becky]

Sad news indeed

We recently had a wasps nest in our roof - got someone out to 'evict' them. I was glad to see the last of the little bar stewards

 

[floppybootstomp]

Today I learned it pays to RTFM.

Trying to make a 15-0-15 PSU with a pair of voltage regulators I was getting a + voltage of 15V but a negative voltage of 32V.

After spending lots of time checking my circuitry I finally read the regulator's spec sheet which said it only works with input voltages between 17.5 & 35V. I was feeding both + & - rails 42V.

Whoops. I need a different transformer I do.

Was that a bit on the nerdy side?

 

[Becky]

Today I learned it pays to RTFM.

Oops!

What are you making a PSU for?

 

[floppybootstomp]

Oops!

What are you making a PSU for?

A three way active crossover.

I already have three home made Mosfet amplifiers, switcher and preamp then I intend to make a 3 way home loudspeaker setup.

Why? Don't ask

It just took my fancy and it keeps me off the streets...

This is the loudspeaker system: https://sites.google.com/site/undefinition/tarkus

 

[Becky]

Looks very interesting, and nice design too. I like how he has included photos of versions by other DIYers Are you making the full housing too?

 

[Ian]

TIL: Bees don't have as much sperm as they used to.

TIL.... "Should a drone (bee) succeed in mating, he soon dies because the penis and associated abdominal tissues are ripped from the drone's body after sexual intercourse"

A three way active crossover.

I already have three home made Mosfet amplifiers, switcher and preamp then I intend to make a 3 way home loudspeaker setup.

That would be a cracking build thread in the A/V forum - I really liked the turntable renovation one .

 

[V_R]

This is the loudspeaker system: https://sites.google.com/site/undefinition/tarkus

They are some mighty fine looking looking speakers. Please, please show us the final product!

TIL.... "Should a drone (bee) succeed in mating, he soon dies because the penis and associated abdominal tissues are ripped from the drone's body after sexual intercourse"

Mating between a single drone and the queen lasts less than 5 seconds, and it is often completed within 1–2 seconds.

The guy bee gets a rough deal!

 

[floppybootstomp]

Are you making the full housing too?

If you mean the cabinets then yes, I will be. Considering buying a rotary power saw or I may just get the panels cut to size at a local timber merchants. I have all the parts for the crossover but the speakers may take some time to complete.

The active crossover was a project published in the January edition of Elektor magazine and I've bought the PCB's from them. Back in the eighties or early nineties the same magazine also published a similar project which I built and I used that crossover with my disco.

That would be a cracking build thread in the A/V forum - I really liked the turntable renovation one .

That can be arranged, I'll take some snaps.

 

[Becky]

That can be arranged, I'll take some snaps.

Excellent, looking forward to that!

 

[Becky]

Today I learned what spider droppings look like. Been getting weird dots on the floor near the patio door for ages, and I kept cleaning them off and they kept coming back. Know what they are now

 

[nivrip]

Today I learned what spider droppings look like. Been getting weird dots on the floor near the patio door for ages, and I kept cleaning them off and they kept coming back. Know what they are now

How do you know? Did you analyze them.

 

[Becky]

How do you know? Did you analyze them.

Haha nope! Worked it out. Had my suspicions, so googled 'spider poo' and found my supporting evidence! Some weird looking pictures also came up... Exhibit A below:

 

[V_R]

Haha, there are some great 60's Spiderman memes out there.

 

[muckshifter]

... you learn something new everyday.

I just can't remember what it was I learned yesterday.

 

[exmoor]

Today I Learn that my office I rent, the rent is going up due to:

"The ongoing global expansion and the upwardly need for affordable (this is some mistake!) office accommodation in a forward dynamic society post Brexit"

And I thought everyone wanted out of England Plc??

 

[Taffycat]

Today I learned that...

Below Constanța county close to the Black Sea and the Bulgarian border, lies a cave that has remained isolated for 5.5 million years.

Despite a complete absence of light and a poisonous atmosphere, the cave is crawling with life. There are unique spiders, scorpions, woodlice and centipedes, many never before seen by humans, and all of them owe their lives to a strange floating mat of bacteria.
Source: http://www.bbc.co.uk

 

[V_R]

TIL: I wanna do Beer Can Chicken on the BBQ.


https://www.weberbbq.co.uk/recipe/beer-can-chicken/

 

[Becky]

Below Constanța county close to the Black Sea and the Bulgarian border, lies a cave that has remained isolated for 5.5 million years.

Fascinating read! I've heard about this place before, must be an intriguing place for scientists.

What's more, the air is low in oxygen: it contains just 10% oxygen rather than the usual 20%. Without breathing apparatus, you would soon develop a headache. Visitors can only stay down for 5 or 6 hours before their kidneys pack in.

It just sounds so alien!

TIL: I wanna do Beer Can Chicken on the BBQ.

Sounds great! I hope we're all invited

 

[Becky]

Today I learned that Norway is considering giving a mountain to Finland as a 100th birthday present...

https://www.theguardian.com/world/2...move-mountain-halti-halditsohkka-highest-peak

Sounds good, eh @Urmas