R/€ = 17.17 Change: -0.10
R/$ = 14.74 Change: -0.06
Au 1810.67 $/oz Change: 27.92
Pt 1071.50 $/oz Change: 21.00

Terry Mackenzie-hoy

Terry Mackenzie-hoy

Mackenzie-Hoy is a consulting acoustics and electrical engineer –

The balloon rises

22nd October 2021 My friend, Vladimir Kilmik, lives in Minsk and visits occasionally. He tells me that Russia can squeeze the economy of all the European Union (EU) as much as IT want, just by throttling the supply of natural gas. The EU imports 90% of its natural gas needs and (spoiler alert) very little of it... 

Our hospitals

15th October 2021 One of our unqualified journalists recently wrote about Charlotte Maxeke Hospital that it had been built during apartheid and that, at the time, there were no regulations regarding the construction of hospitals and other buildings and thus it has many defects that have to be repaired. For this... 

The crooks at Eskom

8th October 2021 I don’t think South Africans are keener on theft than any other nation. Anybody who has seen the film Goodfellas may remember the line (from Henry Hill): “By the time I grew up, there was $30-billion a year in cargo moving through Idlewild Airport and, believe me, we tried to steal every bit of... 

Speech transmission intelligibility

1st October 2021 It’s almost a given. At any function, on any TV broadcast, we will hear somebody speak. More likely than not, the speech will come across with an echo, which will make it hard to understand. Not impossible, just hard. But we concentrate, we listen, and we follow what is being said. It should not... 

The usual suspects

24th September 2021 In the film Casablanca, the resistance suspects are at an airport, trying to escape by aircraft. German soldiers are there. Rick, the anti-hero (Humphrey Bogart) shoots dead the German officer, Major Strasser, to stop him from interfering with the escapees. The French Chief of Police arrives,... 

Hospital engineering

17th September 2021 At about midnight, 35 years ago, in 1986, I travelled in my car down Athol avenue towards Glenhove road. Things changed and, when I became conscious, I was in the wreck of my car. I was badly injured. After a week, I could appreciate my situation: I was in the main orthopaedic ward of... 

South Africa’s power system

3rd September 2021 There are a few people who the media will call up to give an opinion on the South African power system. These persons are always referred to as energy experts, as in “according to energy expert Jonny Breakertrip” or whoever. In a way, this is unfortunate, since, of those persons quoted by the... 

Power system stability

27th August 2021 Recently I was asked what I meant when I said that the proposed Karpowership generation at Saldanha Bay would make the power system unstable. For those who don’t know, there is a consortium that proposes to solve the problem of a shortage of power generation in South Africa using three ships... 

Mackenzie-Hoy’s exploits

20th August 2021 No, no, not me. Benito Mussolini, who died in 1945, was an Italian political leader who became a dictator of Italy from 1925 to 1945. On June 11, 1940, he declared war on Britain and France and, as a first step, on September 13, the Italians invaded Egypt from their colony, Libya. The British... 

A brand-new theory

13th August 2021 When I was young, I worked on the gold mines. On many occasions, I worked in a chamber underground on 18 Level – which is 1 800 m below ground. Underground it was hot and humid. Very hot. The temperature increases by about 25 °C for every kilometre underground, which means it can be as high as 45... 

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