Showing posts with label Mie scattering. Show all posts
Showing posts with label Mie scattering. Show all posts

Sunday, 2 March 2025

Transfiguration

The Broken Spectre

Address gien in Templederry Church and St Mary's Nenagh on Transfiguration Sunday, the last before Lent, on 2nd March 2025 

Mountain tops are special places, places where we feel awed by the immensity of God’s creation.

When the weather is good, the distant views reveal how puny we really are. When the clouds close in, we experience isolation from all that is familiar. And when the wind blows rain or hail or snow in our face, we understand our own frailty and vulnerability.

Like most of us, I suppose, I love walking and climbing in mountains, though I’m less able for it nowadays. I have vivid memories of many climbs. Climbing Keeper Hill as a child with my parents, each time I thought I was near the top another ridge revealed itself, until at the final summit half of Ireland was laid out in front of me. Climbing a peak called Le Dent du Chat near Annecy in France as a teenager, Mont Blanc and the snow peaks of the alps began to rise above the opposite ridge as I neared the top. And climbing Lugnaquilla by myself in my 40s - on a whim, unsuitably prepared – the cloud closed in after 5 minutes on the summit, and it grew cold, very cold – I was lucky to fall in with a soldier with a compass walking from the Glen of Imaal to Glenmalure, who showed me the right way down.

In today’s Gospel (Luke 9:28-43), Luke tells the story of Peter, James and John’s very special mountain top experience with Jesus.

High on the mountain, Peter, James and John see Jesus in a new light: ‘the appearance of his face changed, and his clothes became dazzling white’, we are told. Alongside him they see two men talking to him, whom they recognise as Moses and Elijah, the two preeminent figures of Judaism, representing the Law and the Prophets.

Peter, always the impulsive one, says to Jesus, ‘Master, it is good for us to be here; let us make three dwellings, one for you, one for Moses, and one for Elijah’. Peter does not want this emotional moment to end – such a human response!

Then the cloud closes in around them.  They are terrified. And they hear a voice saying, ‘This is my Son, my Chosen; listen to him!’ When the cloud clears, they look around, and they see only Jesus. They do not tell anyone about their experience until later.

Their experience, which we call the Transfiguration, reveals Jesus to be the Christ, the Son of God. It must have been very important to them, because they remembered it and passed on their story after the Resurrection, so that it could be told to us not just by Luke, but also by Matthew and Mark.

There is a possible scientific explanation for what Peter, James and John saw.

High on a mountain, with cloud around, is precisely when we may encounter an optical effect called a ‘glory’. In this effect sunlight is scattered back from water droplets in a mist, as a glowing halo - the technical term for it is Mie scattering.

The most famous example is the ‘Brocken Spectre’, so named because of sightings on the Brocken, the highest peak of the Harz Mountains in Germany. This appears when a low sun is behind a climber who is looking downwards into mist from a ridge or peak. The spectre is the shadow of the observer projected onto the mist, and it is surrounded by the glowing halo of a glory.

You might be lucky enough to see a glory yourselves, as I have. I saw it when I looked down from a plane at the shadow it cast on a cloud. The shadow was surrounded with a halo of light – this was the glory.

I imagine Peter and James and John close together on the mountain, with Jesus praying a little bit away, as the clouds swirl around them. Where Jesus has been standing, they each suddenly see a glowing figure – it’s a shadow, their own shadow, cast on a cloud, wrapped in a glory. And the two other shadows beside it are those of their companions, whom they take to be Moses and Elijah.

This possible scientific explanation of the Transfiguration should not disturb our faith.

I find that it helps me to believe that the Transfiguration really did take place. It was not invented by the Gospel writers to serve their own artistic or theological needs.

Their experience of hearing a voice from heaven also rings very true to me. When human beings suddenly realise something of vital importance, something which changes everything, we often talk of having a ‘flash of inspiration’ or ‘hearing a voice’. There are many such reports of deeply emotional religious experiences, not only within our own Christian tradition, but also from other faiths.

I believe that God is present in and works through the laws of the universe he created. The disciples accurately reported what they saw, even if they could not understand the physics. The true wonder and glory of the Transfiguration is how the subtle working out of the natural laws of God’s creation testify to its goodness, and God’s love for it, and for us.

If this explanation is correct, it should not change one whit our awe and wonder at God’s power and glory.

What matters, surely is what the Transfiguration reveals to Peter, James and John - and to us too - about the nature of Jesus and his relationship with God. They saw Jesus in a new light, as ‘the glory of the Lord’. The voice they heard told them to listen to him, and this they did.

I believe the Transfiguration was the moment on their long road when Peter, James and John realised their complete commitment to Jesus and his teaching. Starting from their call in Galilee, this road led them ultimately to Jerusalem, to the Cross, to the Resurrection, to the Ascension, and on to Pentecost, where they started to blossom as Christ’s Church.

And as Christians the Transfiguration should inspire each one of us to make our own commitment to follow Jesus as his disciples. Because ‘all of us, with unveiled faces, seeing the glory of the Lord as though reflected in a mirror, are being transformed into the same image from one degree of glory to another’, in St Paul’s words (2 Corinthians 3:18).

I finish in prayer.

Holy God, mighty and immortal,

you are beyond our knowing,

yet we see your glory in the face of Jesus Christ,

whose compassion illumines the world.

Transform us into the likeness of the love of Christ,

who renewed our humanity so that we may share in his divinity,

the same Jesus Christ, our Lord,

who lives and reigns with you and the Holy Spirit. Amen.

Tuesday, 16 February 2021

Transfiguration

 

A reflection on St Mark's account of the transfiguration, given at Morning Worship for the Community of Brendan the Navigator on Tuesday 16th February 2021

A Brocken Spectre, captured at Glencoe
for more on the science see https://en.wikipedia.org/wiki/Glory_(optical_phenomenon)

Mountain tops are special places, places where we feel awed by the immensity of God’s creation.

When the weather is good, the distant views reveal how puny we really are. When the clouds close in, we experience isolation from all that is familiar. And when the wind blows rain or hail or snow in our face, we understand our own frailty and vulnerability.

In today’s reading (Mark 9:2-9), Mark tells the story of three disciple’s very special mountain top experience. High on the mountain, Peter, James and John see Jesus ‘transfigured before them, and his clothes became dazzling white’ – his appearance is changed: the Greek word translated as ‘transfigured’ is from the same root as ‘metamorphosis’. Alongside him they see two figures talking to him, whom they identify as Elijah and Moses, the two preeminent figures of Judaism, representing the Law and the Prophets.

Peter, always the impulsive one, says, ‘Rabbi, it is good for us to be here; let us make three dwellings, one for you, one for Moses, and one for Elijah’. Peter does not want this emotional moment to end – such a human response!

Then the cloud closes in around them.  They are terrified. And they hear a voice saying, ‘This is my Son, the Beloved, listen to him!’ When the cloud clears, they look around, and they can see only Jesus, who orders them not to tell anyone what they have experienced, ‘until the Son of Man (has) risen from the dead’.

Their experience, which we call the Transfiguration, reveals Jesus to them as the Christ, the Son of God. They must have felt it was immensely important, because they remembered it and passed on their story after the Resurrection, so that it could be told to us not just by Mark, but also by Matthew and Luke.

There may be a scientific explanation for what Peter, James and John saw.

High on a mountain, with cloud around, is precisely where we may encounter an optical effect called a ‘glory’. In this effect sunlight is scattered back from water droplets in a mist, as a glowing halo - the technical term for it is Mie scattering.

The most famous example is the ‘Brocken Spectre’, so named because of sightings on the Brocken, the highest peak of the Harz Mountains in Germany. It appears when a low sun is behind a climber who is looking downwards into mist from a ridge or peak. The spectre is the shadow of the observer projected onto the mist, and it is surrounded by the glowing halo of a glory. Try googling ‘Brocken Spectre’ to find photos of it.

You might be lucky enough to see a glory yourselves, as I have. I saw one when I looked down from a plane at the shadow it cast on a cloud. The shadow was surrounded with a halo of light – this was the glory.

I imagine Peter and James and John close together on the mountain, with Jesus praying a little bit away, as the clouds swirl around them. Where Jesus has been standing, they each suddenly see a glowing figure. It is their own shadow cast onto a cloud, and wrapped in a glory. The other two figures they see, whom they take to be Moses and Elijah, are the shadows of their companions. Is it significant, I wonder, that each disciple sees his own shadow transfigured?

This explanation from physics convinces me that the Transfiguration was not imagined, but a real event. I believe that God is present in, and works through, the laws of the universe he created. The disciples accurately reported what they saw, even if they could not understand the physics, as we can now.

If this explanation is correct, it should not change one whit our awe and wonder at God’s power and glory.

What matters, surely, is what the Transfiguration reveals to Peter, James and John about the nature of Jesus and his relationship with God. They saw Jesus transfigured as ‘the light of the Gospel of the glory of Christ, who is the image of God’, in St Paul’s words. The voice they heard told them to listen to him, and this is what they did. From then on Jesus intensified his teaching to them, preparing them for their role as apostles after his death.

The Transfiguration is, I think, the moment on their long road when they gave their complete commitment to Jesus and his teaching. Starting from their call in Galilee, this road led them ultimately to Jerusalem, to the Cross, to the Resurrection, to the Ascension, and on to Pentecost, where they started to blossom as Christ’s Church.

And as Christians it should inspire each one of us to make our own commitment to follow Jesus as his disciple, wherever that may take us.

 

 

Sunday, 11 February 2018

Mountain top experiences

Address given at Templederry, St Mary's Nenagh & Killodiernan on Transfiguration Sunday, 11th February 2018, the Sunday before Lent, Year B


Mountain tops are special places, places where we feel awed by the immensity of God’s creation.
When the weather is good, the distant views reveal how puny we really are. When the clouds close in, we experience isolation from all that is familiar. And when the wind blows rain or hail or snow in our face, we understand our own frailty and vulnerability.

Like most of us, I suppose, I love walking and climbing in mountains – though I’m not so limber as I once was. I have vivid memories of many climbs. I remember climbing Keeper Hill as a child with my parents, how each time I thought I had reached the top another ridge revealed itself, until at the final summit half of Ireland was laid out in front of me. I remember climbing a peak called Le Dent du Chat near Annecy in France as a teenager, where close to the top, Mont Blanc and the snow peaks of the alps began to rise above the opposite ridge. And I remember climbing Lugnaquilla by myself in my 40s - on a whim, unsuitably prepared – after a few minutes on the summit the cloud closed in and it grew cold, very cold – I was lucky to fall in with a soldier with a compass walking from the Glen of Imaal to Glenmalure who showed me the right way down.

In today’s Gospel (Mark 9:2-9), Mark tells the story of Peter, James and John’s very special mountain top experience.
High on the mountain, Peter, James and John see Jesus ‘transfigured before them, and his clothes became dazzling white’ – his appearance is changed: the Greek word translated as ‘transfigured’ is from the same root as ‘metamorphosis’. Alongside him they see two figures talking to him, whom they recognise as Elijah and Moses, the two preeminent figures of Judaism, representing the Law and the Prophets.

Peter, always the impulsive one, says, ‘Rabbi, it is good for us to be here; let us make three dwellings, one for you, one for Moses, and one for Elijah’. Peter does not want this emotional moment to end – such a human response!

Then the cloud closes in around them.  They are terrified. And they hear a voice saying, ‘This is my Son, the Beloved, listen to him!’ When the cloud clears they look around, and can see only Jesus, who orders them not to tell anyone what they have experienced, ‘until the Son of Man (has) risen from the dead’.

Their experience, which we call the Transfiguration, reveals Jesus to be the Christ, the Son of God. It must have been very important to them, because they remembered it and after the Resurrection passed on their story, so that it could be told to us not just by Mark, but also by Matthew and Luke.

There is a possible scientific explanation for what Peter, James and John saw.
High on a mountain, with cloud around, is precisely where we may encounter an optical effect called a ‘glory’. In this effect sunlight is scattered back from water droplets in a mist, as a glowing halo - the technical term for it is Mie scattering.

The most famous example is the ‘Brocken Spectre’, so named because of sightings on the Brocken, the highest peak of the Harz Mountains in Germany. This appears when a low sun is behind a climber who is looking downwards into mist from a ridge or peak. The spectre is the shadow of the observer projected onto the mist, and it is surrounded by the glowing halo of a glory. Here is a photo of one, and if you’re interested you can follow the web link to find out more.


The Brocken Spectre – if you are interested in more of the physics 
see http://www.atoptics.co.uk


You might be lucky enough to see a glory yourselves, as I have. I saw it when I looked down from a plane at the shadow it cast on a cloud. The shadow was surrounded with a halo of light – this was the glory.

I imagine Peter and James and John close together on the mountain, with Jesus praying a little bit away, as the clouds swirl around them. Where Jesus has been standing, they each suddenly see a glowing figure – it’s their own shadow cast on a cloud, wrapped in a glory - and two other shadows beside it, those of their companions, whom they take to be Moses and Elijah.

This explanation from physics helps me to believe that the Transfiguration really did take place and was not invented by the Gospel writers to serve their own artistic or theological needs. I believe that God is present in and works through the laws of the universe he created. The disciples accurately reported what they saw, even if they could not understand the physics.

Their experience of hearing a voice from heaven also rings very true to me. When someone suddenly realises something of vital importance, something which changes everything, he or she often talks of having a ‘flash of inspiration’ or ‘hearing a voice’. Many people have reported such deeply emotional religious experiences, not only in our own Christian tradition, but also in other faith traditions.

If this scientific explanation is correct, it should not change one whit our awe and wonder at God’s power and glory.
What matters, surely is what the Transfiguration reveals to Peter, James and John - and to us too - about the nature of Jesus and his relationship with God.

They saw Jesus transfigured, as ‘the light of the Gospel of the glory of Christ, who is the image of God’, in St Paul’s words from today’s 2nd reading (2 Corinthians 4:3-6). The voice they heard told them to listen to him, and this surely is what they did. From then on Jesus intensified his teaching to them, preparing them for their role as apostles after his death.

I believe the Transfiguration was the moment on their long road when they realised their complete commitment to Jesus and his teaching. Starting from their call in Galilee, this road led them ultimately to Jerusalem, to the Cross, to the Resurrection, to the Ascension, and on to Pentecost, where they started to blossom as Christ’s Church.

And as Christians it should inspire each of us to make our own commitment to follow Jesus as his disciples. ‘For it is the God who said, ‘Let light shine out of darkness’, who has shone in our hearts to give the light of the knowledge of the glory of God in the face of Jesus Christ’.

Let us finish in prayer with a Collect of the Word Transfiguration Sunday.
Holy God,
you have revealed the glory of your love in Jesus Christ,
and have given us a share in your Spirit.
May we who listen to Christ follow faithfully,
and, in the dark places where you send us,
reveal the light of your gospel.
We ask this in his name. Amen

Sunday, 7 August 2016

Transfiguration

Address given at Templederry on Sunday 7th August 2016, the 11th after Trinity, celebrated as the Feast of the Transfiguration, transferred from 6th August.

Today we celebrate the Festival of the Transfiguration.
In the Gospel reading Luke 9:28-36 gives us a short account of how Peter and James and John had a strange spiritual and emotional experience. Jesus brought them high on a mountain to pray. There they saw Jesus transfigured, in dazzling white clothing, his face changed, and alongside him Elijah and Moses. As cloud enveloped them they hear a voice saying, ‘This is my Son, my Chosen; listen to him’. The same story is also told in the other synoptic Gospels – scholars believe Luke and Matthew most likely got it from Mark.

Some people interpret the Transfiguration as a miracle story prefiguring Jesus’s Ascension, a sort of artistic device to reinforce the Gospel drama.  This might be all well and good as literary criticism, but I am sure there is a lot more to it than this. The Church has always seen this as an important story, because it reveals Jesus to be the Christ, the Son of God.

In reflecting on the Transfiguration, I’m going to look first at the physics that may lie behind it, then at the disciples’ emotional response to it, and lastly at the effect their experience had on them

First to the physics: Luke’s account gives us a clue as to what the disciples actually saw.
They were high on a mountain, with cloud around. These are just the circumstances where we can encounter an optical effect called a ‘Glory’. In this effect sunlight is scattered back from water droplets in a mist, as a glowing halo. The technical term for this is Mie scattering, and there are even software packages to calculate what can be seen for different droplet sizes.

Historically, the most famous example is the ‘Brocken Spectre’, so named because of sightings on the Brocken, the highest peak of the Harz Mountains in Germany. This appears when a low sun is behind a climber who is looking downwards into mist from a ridge or peak. The spectre is the shadow of the observer projected onto the mist, and it is surrounded by the glowing halo of a glory.
The Brocken Spectre

You might be lucky enough to see a Glory yourselves, as I have. I saw it when I looked down from a plane at the shadow it cast on a cloud. The shadow was surrounded with a halo of light – this was the glory.

I hope you don’t feel that this physical explanation takes anything away from the transfiguration story. It helps me to believe that the Transfiguration really did take place, and was not invented by the Gospel writers to serve their own artistic or theological needs. I believe that God is present in and works through the laws of the universe he created. The disciples accurately reported what they saw, even if they could not understand the physics. What matters surely is what this revealed to them about the nature of Jesus and his relationship with God.

If you are interested in more of the physics, see http://www.atoptics.co.uk

Now, let us focus on what the disciples actually experienced, emotionally and spiritually.
I imagine Peter and James and John close together on the mountain, with Jesus a little bit away, as the clouds swirled around them. Where Jesus had stood, they each suddenly see a glowing figure – it’s their own shadow cast on a cloud, wrapped in a glory - and two other shadows beside it, those of their companions.

They are awed by what they see. Peter was always the impulsive one. Just days before, when Jesus had asked the disciples who people said that he was, Peter had blurted out ‘You are the Messiah’. Now he identifies the three figures with Jesus, Moses and Elijah, and as the cloud moves away and the glory fades he calls out to Jesus, ‘Master, it is good for us to be here; let us make three dwellings, one for you, one for Moses, and one for Elijah’. Peter didn’t want this emotional moment to end – such a human response!

Then the cloud closes in around them and all three are terrified. And they heard a voice as if from heaven, saying ‘This is my Son, the Beloved, listen to him!’

This description of their spiritual experience rings very true to me. When people suddenly realise something of vital importance, something which changes everything, they often talk of having a ‘flash of inspiration’ or ‘hearing a voice’. Many people report such deeply emotional religious experiences. This is so in our own Christian tradition, for St Paul or St Francis for instance; and perhaps for some of our ‘born again’ contemporaries. But it is also so in other faith traditions, such as for Gautama, the Buddha, who experienced enlightenment under a Bodh tree, and for Mahomed, peace be upon him, whose ‘night journey’ took him to the Temple Mount in Jerusalem. We may not have had such a religious experience ourselves – I haven’t - but we may have felt something similar, for instance at the moment we realise that this very person I am with is the one I want to marry, to spend the rest of my life with.

Finally, what effect did this experience have on Peter, James and John?
The voice the disciples heard told them to listen to Jesus, and this surely is what they did. From then on Jesus intensified his teaching to them, as if preparing them for their role as apostles after his death.

I believe the Transfiguration was the moment on their long road when they realised their complete commitment to Jesus and his teaching. Starting from the call in Galilee, this road led them ultimately to Jerusalem, to the Cross, to the Resurrection, to the Ascension, and on to Pentecost, where they started to blossom as the church of Christ.

And they never forgot this moment of insight into Jesus’s relationship with God, for they passed on the story through Mark, to Matthew and Luke, and so to ourselves.

We should value their experience, and other religious experiences, because without them, and without the spiritual commitment that flows from them, there could be no Church, and we would not be here today.


Sunday, 10 February 2013

Shining Faces


The common thread between today’s readings is shining faces.
In the OT reading (Exodus 34:29-35) we heard how the Israelites saw the skin of Moses’ face shine when he came down from Mount Sinai with the stone tablets of the covenant – what we know as the Ten Commandments.

In the NT reading (Luke 9:28-36) Luke tells us how Peter and John and James saw Jesus’s face change – shining, as Matthew tells us - and his clothes become dazzling white, in the event we call the Transfiguration.

So today I want to reflect a little about shining faces and what they mean for us.

First, let’s think about Moses’ shining face.
The background to the story is that this is the second time that Moses came down from Mount Sinai with stone tablets inscribed with the Ten Commandments. The first time, he discovered that the Israelites had broken their covenant with the Lord, the God they called YHWH – Moses found them worshipping a Golden Calf made by Aaron. In a fury Moses smashed the stone tablets on the ground and ordered a massacre of those responsible. After Moses pleaded with the Lord not to desert the Israelite people, the Lord had relented. So for a second time Moses climbed Mount Sinai and returned forty days and nights later with another pair of tablets, to a very different reception.

The Israelites were afraid to come near Moses because his face was shining, we are told. I wonder if what happened the first time might also have put them off. He put on a veil to cover his face, which he only took off when he went into the tent pitched a little away from the Israelite encampment where he went to meet the Lord alone, to pray.

What are we to make of Moses shining face? Is this a miraculous light, or had he perhaps got sunburned in the 40 days on the mountain? I prefer to look at it in another way.

Even today we talk about lovers or brides, pregnant women and new mothers looking ‘radiant’ – it is the light of joy in their faces which we recognise by tiny almost imperceptible clues – they don’t glow in the dark, but they do look somehow different to how they looked before their joy.

I think this is the meaning of the haloes that are used in many religious traditions – not just by Christians, but by Muslims and Buddhists for instance – to mark out holy people or saints. Haloes depict the light of joy that comes from a close encounter with the divine, a symbolic reflection of God’s love for his saints.

And I think we should see in Moses’ shining face a mark of his joy at encountering the Lord, a reflection of God’s love for him and for his people Israel.

So what of Jesus’s Transfiguration?
The story is told by Matthew and Mark as well as Luke, in almost identical words – indeed scholars suggest that both Matthew and Luke made use of Mark’s earlier account.

The bones of the common story they tell are these. Jesus took Peter and John and James with him up a mountain. There Jesus was transfigured before them, with his face shining and his clothes dazzling white. And beside him the three disciples saw two other figures, which they identified with Elijah and Moses.  Peter said to Jesus, ‘It is good for us to be here; let us make three dwellings, one for you, one for Moses, and one for Elijah’. Then a cloud overshadowed them and they heard a voice saying, ‘This is my Son … listen to him’. And when the cloud cleared they saw only Jesus by himself.

Now a high mountain and clouds are just the circumstances where we can see an unusual optical effect called a ‘glory’. In a ‘glory’ sunlight is scattered back from water droplets in a mist, forming a glowing halo – the technical term is Mie scattering. An example is the ‘Brocken Spectre’, named for the highest peak in the Harz Mountains in Germany. This appears when a low sun is behind a climber looking downwards into mist from a ridge – the spectre is the shadow of the observer projected onto the mist and surrounded by the glowing halo of a glory. You might be lucky enough to see one yourself, as I did, looking down from a plane at the shadow it cast on a cloud, surrounded by a halo of light.

I imagine Peter and John and James close together on the mountain, with Jesus a little bit away, praying by himself as was his custom, as the clouds swirl around them. Suddenly, where Jesus has been standing, they each see a glowing figure – it’s their own shadow cast on a cloud, wrapped in a glory – and two other shadows beside it, which are those of their companions. Peter, always the impulsive one, identifies the three figures with Jesus, Moses and Elijah. When the cloud envelopes them they are terrified, and in a sudden flash of inspiration they understand, as if they had heard God say it, that they must listen to Jesus as God’s Son.

This is speculation, of course, and not just mine. But if it is true that we can understand the effects surrounding Transfiguration as physics and not as a miracle, it should not weaken our faith one jot,  in any sense. Rather it makes it easier to believe the event actually happened, and therefore it strengthens the case that the Gospels are reliable accounts. The Evangelists might not have understood the physics, as we can, but they did not just invent the story to serve their artistic and theological needs.

The real miracle, I suggest, is how the Transfiguration affected the disciples.
They did not tell anyone about their experience, Luke tells us – indeed Matthew and Mark both say Jesus forbade them to. But they remembered it, how important it seemed to them, for they passed their story on through Mark to Matthew and Luke, and so to us.

The voice that Peter, John and James heard told them to listen to Jesus. And that is just what they did. Jesus taught them as they travelled with him the road that lead to Jerusalem, to the Cross, to the Resurrection, to the Ascension, and on to Pentecost, when they began to blossom as Christ’s body, the Church.

I think the Transfiguration was the moment on their long road when their complete commitment to Jesus was confirmed.

And we are surely meant to understand that his shining face and the dazzling light are, in fact, a reflection of Jesus’s joy in his Father’s love, for himself, for all creation - and for us.